Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F2/00—Processes of polymerisation
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B82—NANOTECHNOLOGY
  • B82B—NANOSTRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS, MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES AS DISCRETE UNITS; MANUFACTURE OR TREATMENT THEREOF
  • B82B3/00—Manufacture or treatment of nanostructures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F8/00—Chemical modification by after-treatment
  • C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups

Definitions

• This invention relates to thin layer compositions which are nanofilms prepared from various macrocyclic module components and various polymeric and amphiphilic components.
• This invention also relates to the fields of organic chemistry and nanotechnology, in particular, it relates to nanofilm compositions useful for filtration.
• Nanotechnology involves the ability to engineer novel structures at the atomic and molecular level.
• One area of nanotechnology is to develop chemical building blocks from which hierarchical molecules of predicted properties can be assembled.
• An approach to making chemical building blocks or nanostructures begins at the atomic and molecular level by designing and synthesizing starting materials with highly tailored properties. Precise control at the atomic level is the foundation for development of rationally tailored synthesis-structure-property relationships which can provide materials of unique structure and predictable properties.
• This approach to nanotechnology is inspired by nature. For example, biological organization is based on a hierarchy of structural levels: atoms formed into biological molecules which are arranged into organelles, cells, and ultimately, into organisms.
• Resistance to flow of species through a membrane may also be governed by the flow path length. Resistance can be greatly reduced by using a very thin film as a membrane, at the cost of reduced mechanical strength of the membrane material.
• Conventional membranes may have a barrier thickness of at least one to two hundred nanometers, and often up to millimeter thickness. In general, a thin film of membrane barrier material can be deposited on a porous substrate of greater thickness to restore material strength.
• Membrane separation processes are used to separate components from a fluid in which atomic or molecular components having sizes smaller than a certain "cut-off size can be separated from components of larger size. Normally, species smaller than the cutoff size are passed by the membrane.
• the cut-off size may be an approximate empirical value which reflects the phenomenon that the rate of transport of components smaller than the cut-off size is merely faster than the rate of transport of larger components.
• the primary factors affecting separation of components are size, charge, and diffusivity of the components in the membrane structure.
• the driving force for separation is a concentration gradient, while in electrodialysis electromotive force is applied to ion selective membranes.
• the invention provides nanofilm compositions.
• the nanofilm composition comprises a reaction product of macrocyclic modules and at least one polymeric component.
• the nanofilm composition comprises a reaction product of a polymeric component and an amphiphile.
• the nanofilm composition comprises a reaction product of a polymeric component, wherein the polymeric components are linked by linker molecules.
• the nanofilm composition comprises a reaction product of at least two polymeric components, wherein the first polymeric component is a polymerizable amphiphile, and the second polymeric component is a polymerizable monomer.
• the macrocyclic modules are selected from the group consisting of Hexamer la, Hexamer ldh, Hexamer 3j-amine, Hexamer ljh, Hexamer ljh- AC, Hexamer 2j-amine/ester, Hexamer ldh-acryl, Octamer 5jh-aspartic, Octamer 4jh- acryl, and mixtures thereof.
• the macrocyclic modules are Hexamer ldh.
• the polymeric component comprises a polymerizable monomer.
• the polymeric component comprises a polymerizable amphiphile.
• the polymerizable amphiphile is selected from the group consisting of amphiphilic acrylates, amphiphilic acrylamides, amphiphilic vinyl esters, amphiphilic anilines, amphiphilic diynes, amphiphilic dienes, amphiphilic acrylic acids, amphiphilic enes, amphiphilic cinnamic acids, amphiphilic amino-esters, amphiphilic oxiranes, amphiphilic amines, amphiphilic diesters, amphiphilic diacids, amphiphilic diols, amphiphilic polyols, and amphiphilic diepoxides.
• the polymeric component is a polymer. In some embodiments, the polymeric component is amphiphilic.
• the polymeric component is selected from the group consisting of poly(maleic anhydride)s, poly(ethylene-co-maleic anhydride)s, poly(maleic anhydride-co-alpha olefin)s, polyacrylates, polymethylmethacrylate, polymers containing at least one oxacyclopropane group, polyethyleneimides, polyetherimides, polyethylene oxides, polypropylene oxides, polyurethanes, polystyrenes, poly(vinyl acetate)s, polytetrafluoroethylenes, polyethylenes, polypropylenes, ethylene-propylene copolymers, polyisoprenes, polyneopropenes, polyamides, polyimides, polysulfones, polyethersulfones, polyethylene terephthalates, polybutylene terephthalates, polysulfonamides, polysulfoxides, polyglycolic acids, polyacrylamides, polyvin
• the polymeric component is poly(maleic anhydride-co-alpha olefin).
• the amphiphile is a polymerizable amphiphile.
• the polymerizable amphiphile is selected from the group consisting of amphiphilic acrylates, amphiphilic acrylamides, amphiphilic vinyl esters, amphiphilic anilines, amphiphilic diynes, amphiphilic dienes, amphiphilic acrylic acids, amphiphilic enes, amphiphilic cinnamic acids, amphiphilic amino-esters, amphiphilic oxiranes, amphiphilic amines, amphiphilic diesters, amphiphilic diacids, amphiphilic diols, amphiphilic polyols, and amphiphilic diepoxides.
• the amphiphile is non-polymerizable. In some embodiments, the non-polymerizable
• the nanofilm composition may further comprise a non- polymerizable amphiphile.
• the non-polymerizable amphiphile is selected from the group consisting of decylamine and stearic acid.
• the polymeric component is a polymer, and the non-polymerizable amphiphiles are coupled to the polymer.
• the macrocyclic modules are coupled to each other. In some embodiments, the macrocyclic modules are coupled to the at least one polymeric component. In some embodiments, the polymeric components are coupled to each other. In some embodiments, the at least one polymeric component is coupled to an amphiphile. In some embodiments, the coupling is through linker molecules. In some embodiments, the linker molecules are selected from the group consisting of
• n 1-10
• n 1-6
• R is -H or -CH 3
• R' is -(CH ) n - or phenyl
• R" is -(CH 2 ) n -, polyethylene glycol (PEG), or polypropylene glycol (PPG), and X is Br, Cl,
• the nanofilm composition is prepared by a process comprising polymerizing the at least one polymeric component at an air-water interface. In some embodiments, the nanofilm composition is prepared by a process comprising polymerizing polymerizable amphiphiles at an air-water interface.
• the area fraction of the polymeric components is from
• the area fraction of the polymeric components is less than about 20 percent. In yet other embodiments, the area fraction of the polymeric components is less than about 5 percent.
• the thickness of the nanofilm composition is less than about 30 nanometers. In other embodiments, the thickness of the nanofilm composition is less than about 6 nanometers. In yet other embodiments, the thickness of the nanofilm composition is less than about 2 nanometers.
• the nanofilm composition comprises at least two layers of a nanofilm. In some embodiments, the nanofilm composition further comprises at least one spacing layer between any two of the nanofilm layers. In some embodiments, the spacing layer comprises a layer of a polymer, a gel, or inorganic particles. [0019] In some embodiments, the nanofilm composition is deposited on a substrate. In some embodiments, the nanofilm is coupled to the substrate through the polymeric component. In some embodiments, the substrate is porous. In other embodiments, the substrate is non-porous. In other embodiments, the nanofilm is coupled to the substrate through biotin-strepavidin mediated interaction.
• the surface loss modulus of the nanofilm composition at a surface pressure from 5-30 mN/m is less than about 50% of the surface loss modulus of the same nanofilm composition made without the polymeric components. In other embodiments, the surface loss modulus of the nanofilm composition at a surface pressure from 5-30 mN/m is less than about 30% of the surface loss modulus of the same nanofilm composition made without the polymeric components. In yet other embodiments, the surface loss modulus of the nanofilm composition at a surface pressure from 5-30 mN/m is less than about 20% of the surface loss modulus of the same nanofilm composition made without the polymeric components.
• the nanofilm compositions may have a filtration function which may be used to describe the species that pass through the nanofilm compositions.
• a nanofilm composition may be permeable only to a particular species, including anions, cations, and neutral solutes in a particular fluid, and species smaller than the particular species.
• a particular nanofilm composition may have high permeability for a certain species in a certain solvent.
• a nanofilm composition may have low permeability for certain species in a certain solvent.
• a nanofilm composition may have high permeability for certain species and low permeability for other species in a certain solvent.
• a nanofilm composition may have the following filtration function:
• a nanofilm composition may have the following filtration function:
• the nanofilm composition is impermeable to viruses and larger species.
• the nanofilm composition is impermeable to immunoglobulin G and larger species.
• the nanofilm composition is impermeable to albumin and larger species.
• the nanofilm composition is impermeable to ⁇ 2 -Microglobulin and larger species.
• the nanofilm composition is permeable only to water and smaller species.
• the nanofilm composition has permeability for water molecules and Na + , K + , and Cs + in water.
• the nanofilm composition has low permeability for glucose and urea.
• the nanofilm composition has high permeability for water molecules and Cl " in water.
• the nanofilm composition has high permeability for water molecules and K + in water, and low permeability for Na + in water. In another embodiment, the nanofilm composition has high permeability for water molecules and Na + in water, and low permeability for K + in water. In another embodiment, the nanofilm composition has low permeability for urea, creatinine, Li + , Ca 2+ , and Mg 2+ in water. In another embodiment, the nanofilm composition has high permeability for Na + , K + , hydrogen phosphate, and dihydrogen phosphate in water. In another embodiment, the nanofilm composition has high permeability for Na + , K + , and glucose in water.
• the nanofilm composition has low permeability for myoglobin, ovalbumin, and albumin in water. In another embodiment, the nanofilm composition has high permeability for organic compounds and low permeability for water. In another embodiment, the nanofilm composition has low permeability for organic compounds and high permeability for water. In another embodiment, the nanofilm composition has low permeability for water molecules and high permeability for helium and hydrogen gases. [0023]
• a nanofilm composition may have a molecular weight cut off. In one embodiment, the nanofilm composition has a molecular weight cut-off of about 13 kDa. In another embodiment, the nanofilm composition has a molecular weight cut-off of about 190 Da.
• the nanofilm composition has a molecular weight cut-off of about 100 Da. In yet another embodiment, the nanofilm composition has a molecular weight cut-off of about 45 Da. In another embodiment, the nanofilm composition has a molecular weight cut-off of about 20 Da.
• compositions comprising a mixture of macrocyclic modules and at least one polymeric component in organic solvent.
• compositions comprising a thin film of a reaction product of macrocyclic modules and at least one polymeric component, wherein the composition is prepared by a process comprising contacting the macrocyclic modules and the at least one polymeric component at an air-liquid or liquid-liquid interface.
• the invention provides methods for making nanofilm compositions.
• the polymeric component is polymerizable, further comprising polymerizing the polymeric component at the air-liquid or liquid-liquid interface.
• a method for making a nanofilm composition comprising the reaction product of macrocyclic modules and at least one polymeric component comprises: (a) providing a subphase containing the at least one polymeric component; and (b) contacting macrocyclic modules with the surface of the subphase.
• a method for making a nanofilm composition comprising the reaction product of macrocyclic modules and at least one polymeric component, comprises: (a) providing a first liquid phase comprising the macrocyclic modules; (b) providing a second liquid phase comprising the at least one polymeric component; and (c) forming a liquid-liquid interface from the first liquid phase and the second liquid phase.
• the nanofilm compositions may be prepared by spin coating, spray coating, dip coating, grafting, casting, phase inversion, electroplating, or knife-edge coating.
• the method comprises using the nanofilm composition to separate one or more components from a fluid. In another embodiment, the method comprises using the nanofilm composition to separate one or more components from a mixture of at least two gases.
• Fig. 1 illustrates examples of ellipsometric images of a nanofilm of Hexamer ldh and poly(maleic anhydride-alt- 1-octadecene) (PMAOD).
• Fig. 2 illustrates examples of ellipsometric images of a nanofilm of Hexamer ldh and PMAOD after sonication in various solvents.
• Fig. 3 illustrates examples of the surface rheometric storage and loss moduli for a nanofilm of Hexamer ldh and PMAOD.
• Fig. 4 illustrates examples of scanning electron micrographs of a nanofilm of Hexamer ldh and PMAOD on a polycarbonate substrate.
• Fig. 5 illustrates examples of scanning electron micrographs of a polycarbonate substrate.
• Fig. 6 illustrates an example of an attenuated total reflectance Fourier transform infrared (FTIR-ATR) spectrum of CHC13 rinsings of a nanofilm of PMAOD.
• Fig. 7 illustrates an example of an FTIR-ATR spectrum of Hexamer ldh.
• Fig. 8 illustrates an example of an FTIR-ATR spectrum of CHC13 rinsings of a nanofilm of Hexamer ldh and PMAOD.
• FTIR-ATR attenuated total reflectance Fourier transform infrared
• Fig. 9 illustrates an example of an FTIR-ATR spectrum of CHC13 rinsings of a nanofilm of Hexamer ldh prepared on a water subphase containing diethyl malonimidate (DEM).
• DEM diethyl malonimidate
• Fig. 10 illustrates an example of an FTIR-ATR spectrum of CHC13 rinsings of a nanofilm of Hexamer ldh and PMAOD prepared on a water subphase containing DEM.
• Fig. 11 illustrates examples of atomic force microscopy (AFM) images of a polycarbonate substrate.
• AFM atomic force microscopy
• Fig. 12 illustrates examples of AFM images of a nanofilm of Hexamer ldh and PMAOD on a (3-aminopropyl)triethoxysilane (APTES) modified SiO 2 substrate.
• APTES (3-aminopropyl)triethoxysilane
• Fig. 13 illustrates examples of AFM images of a nanofilm of Hexamer ldh
• Fig. 14 illustrates examples of surface pressure-area isotherms of a nanofilm of octadecylamine (ODA) and polymethylmethacrylate (PMMA).
• ODA octadecylamine
• PMMA polymethylmethacrylate
• Fig. 15 illustrates examples of surface pressure-area isotherms of a nanofilm of
• Fig. 16 illustrates examples of AFM images of a nanofilm of Hexamer ldh
• Fig. 17 illustrates examples of the surface rheometric storage and loss moduli for a nanofilm of Hexamer ldh and PMAOD made on a subphase containing 2 mg/ml
• Fig. 18 illustrates examples of the surface rheometric storage and loss moduli for a nanofilm of polyglycidyl methacrylate (PGM) made on a subphase containing 1% ethylene diamine compared with a nanofilm of PGM made on a basic subphase.
• PGM polyglycidyl methacrylate
• FIGs. 19A and 19B show representations of examples of the structure of embodiments of a hexamer macrocyclic module.
• Fig. 20 A shows an example of the Langmuir isotherm of an embodiment of a hexamer macrocyclic module.
• Fig. 20B shows an example of the isobaric creep of an embodiment of a hexamer macrocyclic module.
• Fig. 21 A shows an example of the Langmuir isotherm of an embodiment of a hexamer macrocyclic module.
• Fig. 21B shows an example of the isobaric creep of an embodiment of a hexamer macrocyclic module.
• reaction product refers to a product formed from the indicated components. Coupling may or may not occur between the components in forming a reaction product.
• Polymeric components may or may not be polymerized in forming a reaction product.
• a nanofilm comprising a reaction product of macrocyclic modules and a polymeric component may have coupling between the modules, and or coupling between the modules and the polymeric component, and/or coupling between the polymeric components, or may have no coupling at all.
• the polymeric components are polymerized. The polymeric components may be fully or partially polymerized. Alternatively, the polymeric components may not be polymerized.
• synthon refers to a monomeric molecular unit from which a macrocyclic module may be made; a macrocyclic module is a closed ring of coupled synthons. Structures and syntheses of synthons and macrocyclic modules are described in greater detail hereinbelow.
• polymer and “polymeric molecule” refer to a polymer or a molecule which is predominantly a polymer, but may have some non-polymer atoms or species attached.
• polymer includes copolymers, terpolymers, and polymers containing any number of different monomers.
• polymeric component refers to a molecule or species which is either a polymer, or may form a polymer by polymerization.
• a polymerizable monomer or polymerizable molecule may be a polymeric component.
• the polymeric component may be amphiphilic.
• polymerizable indicates a molecular species which may polymerize under the reaction conditions in which the nanofilm is prepared.
• Non- polymerizable is used herein to indicate a molecular species which will not polymerize under the reaction conditions in which the nanofilm is prepared.
• a species which is "non- polymerizable”under one set of reaction conditions may be “polymerizable” under another set of reaction conditions.
• amphiphile or “amphiphilic” refer to a molecule or species which exhibits both hydrophilic and lipophilic character. In general, an amphiphile contains a lipophilic moiety and a hydrophilic moiety. The terms “lipophilic” and “hydrophobic” are interchangeable as used herein. An amphiphile may form a Langmuir film. An amphiphile may be polymerizable. Alternatively, the amphiphile may not be polymerizable.
• Non-limiting examples of hydrophobic groups or moieties include lower alkyl groups, alkyl groups having 7, 8, 9, 10, 11, 12, or more carbon atoms, including alkyl groups with 14-30, or 30 or more carbon atoms, substituted alkyl groups, alkenyl groups, alkynyl groups, aryl groups, substituted aryl, saturated or unsaturated cyclic hydrocarbons, heteroaryl, heteroarylalkyl, heterocyclic, and corresponding substituted groups.
• a hydrophobic group may contain some hydrophilic groups or substituents insofar as the hydrophobic character of the group is not outweighed.
• a hydrophobic group may include substituted silicon atoms, and may include fluorine atoms.
• the lipophilic moieties may be linear, branched, or cyclic.
• Non-limiting examples of hydrophilic groups or moieties include hydroxyl, methoxy, phenol, carboxylic acids and salts thereof, methyl, ethyl, and vinyl esters of carboxylic acids, amides, amino, cyano, isocyano, nitrile, ammonium salts, sulfonium salts, phosphonium salts, mono- and di-alkyl substituted amino groups, polypropyleneglycols, polyethylene glycols, epoxy groups, acrylates, sulfonamides, nitro, -OP(O)(OCH 2 CH 2 N + RR'R")O " , guanidinium, aminate, acrylamide, pyridinium, piperidine, and combinations thereof, wherein R, R' and R" are each independently selected from H or alkyl.
• Hydrophilic moieties may also include polycaprolactones, polycaprolactone diols, poly(acetic acid)s, poly( vinyl acetates)s, poly(2 -vinyl pyridine)s, cellulose esters, cellulose hydroxyl ethers, poly(L-lysine hydrobromide)s, poly(itaconic acid)s, poly(maleic acid)s, poly(styrenesulfonic acid)s, poly(aniline)s, or poly(vinyl phosphonic acid)s.
• the terms “coupling” and “coupled” with respect to molecular moieties or species, polymeric components, synthons, and macrocyclic modules refers to their attachment or association with other molecular moieties or species, molecules, synthons, or macrocyclic modules.
• the attachment or association may be specific or nonspecific, reversible or non-reversible, the result of chemical reaction, or complexation.
• the bonds formed by a coupling reaction are often covalent bonds, or polar-covalent bonds, or mixed ionic-covalent bonds, and may sometimes be Coulombic forces, ionic or electrostatic forces or interactions. In some preferred embodiments, the bonds formed by a coupling reaction are covalent.
• R refers to a hydrogen or a functional group, each independently selected, unless stated otherwise.
• the functional group may be an organic group.
• the functional group is an organic group.
• alkyl refers to a branched or unbranched monovalent hydrocarbon radical.
• An "n-mC” alkyl or “(nC - mC)alkyl” refers to all alkyl groups containing from n to m carbon atoms.
• a 1-4C alkyl refers to a methyl, ethyl, propyl, or butyl group. All possible isomers of an indicated alkyl are also included.
• propyl includes isopropyl
• butyl includes n-butyl, isobutyl and t-butyl, and so on.
• alkyl group with from 1-6 carbon atoms is referred to as "lower alkyl.”
• alkyl includes substituted alkyls.
• substituted alkyl refers to an alkyl group with an additional group or groups attached to any carbon of the alkyl group. Additional groups attached to a substituted alkyl may include one or more functional groups such as alkyl, lower alkyl, aryl, acyl, halogen, alkylhalo, hydroxy, amino, alkoxy, alkylamino, acylamino, acyloxy, aryloxy, aryloxyalkyl, mercapto, both saturated and unsaturated cyclic hydrocarbons, heterocycles, and others.
• alkynyl refers to any structure or moiety having the unsaturation C ⁇ C.
• aryl refers to an aromatic group which may be a single aromatic ring or multiple aromatic rings which are fused together, linked covalently, or linked to a common group such as a methylene, ethylene, or carbonyl, and includes polynuclear ring structures.
• An aromatic ring or rings may include substituted or unsubstituted phenyl, naphthyl, biphenyl, diphenylmethyl, and benzophenone groups, among others.
• aryl includes substituted aryls.
• substituted aryl refers to an aryl group with an additional group or groups attached to any carbon of the aryl group. Additional groups may include one or more functional groups such as lower alkyl, aryl, acyl, halogen, alkylhalos, hydroxy, amino, alkoxy, alkylamino, acylamino, acyloxy, aryloxy, aryloxyalkyl, thioether, heterocycles, both saturated and unsaturated cyclic hydrocarbons which are fused to the aromatic ring(s), linked covalently or linked to a common group such as a methylene or ethylene group, or a carbonyl linking group such as in cyclohexyl phenyl ketone, and others.
• functional groups such as lower alkyl, aryl, acyl, halogen, alkylhalos, hydroxy, amino, alkoxy, alkylamino, acylamino, acyloxy, aryloxy, aryloxyalky
• heteroaryl refers to an aromatic ring(s) in which one or more carbon atoms of the aromatic ring(s) are substituted by a heteroatom such as nitrogen, oxygen, or sulfur.
• Heteroaryl refers to structures which may include a single aromatic ring, multiple aromatic rings, or one or more aromatic rings coupled to one or more nonaromatic rings. It includes structures having multiple rings, fused or unfused, linked covalently, or linked to a common group such as a methylene or ethylene group, or linked to a carbonyl as in phenyl pyridyl ketone.
• heteroaryl includes rings such as thiophene, pyridine, isoxazole, phthalimide, pyrazole, indole, furan, or benzo-fused analogues of these rings.
• acyl refers to a carbonyl substituent, -C(O)R, where R is alkyl or substituted alkyl, aryl or substituted aryl, which may be called an alkanoyl substituent when R is alkyl.
• amino refers to a group -NRR, where R and R may independently be hydrogen, lower alkyl, substituted lower alkyl, aryl, substituted aryl or acyl.
• alkoxy refers to an -OR group, where R is an alkyl, substituted lower alkyl, aryl, substituted aryl. Alkoxy groups include, for example, methoxy, ethoxy, phenoxy, substituted phenoxy, benzyloxy, phenethyloxy, t-butoxy, and others.
• thioether refers to the general structure R-S-R' in which R and R' are the same or different and may be alkyl, aryl or heterocyclic groups.
• the group -SH may also be referred to as "sulfhydryl” or “thiol” or “mercapto.”
• saturated cyclic hydrocarbon refers to ring structures such as cyclopropyl, cyclobutyl, cyclopentyl, and others, including substituted groups.
• Substituents to saturated cyclic hydrocarbons include substituting one or more carbon atoms of the ring with a heteroatom such as nitrogen, oxygen, or sulfur.
• Saturated cyclic hydrocarbons include bicyclic structures such as bicycloheptanes and bicyclooctanes, and multicyclic structures.
• unsaturated cyclic hydrocarbon refers to nonaromatic cyclic groups with at least one double bond, such as cyclopentenyl, cyclohexenyl, and others, including substituted groups. Substituents to unsaturated cyclic hydrocarbons include substituting one or more carbon atoms of the ring with a heteroatom such as nitrogen, oxygen, or sulfur. Unsaturated cyclic hydrocarbons include bicyclic structures such as bicycloheptenes and bicyclooctenes, and multicyclic structures.
• cyclic hydrocarbon includes substituted and unsubstituted, saturated and unsaturated cyclic hydrocarbons, and includes unicyclic and multicyclic structures.
• heteroarylalkyl refers to alkyl groups in which the heteroaryl group is attached through an alkyl group.
• heterocyclic refers to a saturated or unsaturated nonaromatic group having a single ring or multiple condensed rings comprising from 1-12 carbon atoms and from 1-4 heteroatoms selected from nitrogen, phosphorous, sulfur, or oxygen within the ring.
• heterocycles include tetrahydrofuran, morpholine, piperidine, pyrrolidine, and others.
• each chemical term described above expressly includes the corresponding substituted group.
• heterocyclic includes substituted heterocyclic groups.
• activated acid refers to a -C(O)X moiety, where X is a leaving group, in which the X group is readily displaced by a nucleophile to form a covalent bond between the -C(O)- and the nucleophile.
• activated acids include acid chlorides, acid fluorides, p-nitrophenyl esters, pentafluorophenyl esters, and N-hydroxysuccinimide esters.
• amino acid residue refers to the product formed when a species comprising at least one amino (-NH 2 ) and at least one carboxyl (-C(O)O-) group couples through either of its amino or carboxyl groups with an atom or functional group of a synthon. Whichever of the amino or carboxyl groups is not involved in the coupling may optionally be blocked with a removable protective group.
• this invention relates variously to nanotechnology in the preparation of porous structures and materials having pores that are of atomic to molecular size.
• Materials such as nanofilm compositions may be formed from macrocyclic modules. Nanofilm compositions may also be formed from macrocyclic modules in combination with one or more polymeric components. Nanofilm compositions may also be formed from a polymer and an amphiphile, wherein the amphiphile may be polymerizable or non- polymerizable. Nanofilm compositions may also be formed from polymeric components which have been coupled through linkers. In some embodiments, pores may be supplied through the structure of the nanofilm. In some embodiments, pores are supplied through the structure of the macrocyclic modules.
• the nanofilm is prepared from coupled macrocyclic modules, which may also be coupled to one or more polymeric components.
• the nanofilm includes amphiphilic molecules, which optionally may be coupled to any of the other components. These amphiphilic molecules may be polymerizable or non-polymerizable. It is to be understood that a "non-polymerizable" amphiphile is non- polymerizable under the reaction conditions in which the nanofilm is prepared.
• a nanofilm may be prepared with mixtures of different modules, or with mixtures of macrocyclic modules, amphiphilic molecules, and/or polymeric components.
• the polymeric component may be intermixed, aggregated, or phase separated from the macrocyclic modules and amphiphilic molecules, as described herein.
• Nanofilms having one or more polymeric components made with mixtures of different modules and/or amphiphilic molecules may also have interspersed arrays of pores of various sizes.
• These materials may have regions in which unique structures exist.
• the unique structures may repeat at regular intervals to provide a lattice of pores having substantially uniform dimensions.
• the unique structures may have a variety of shapes and sizes, thereby providing pores of various shapes and sizes. Because the unique structures may be formed in a monolayer of molecular thickness, the pores defined by the unique structures may include a cavity, opening, or chamber-like structure of molecular size. In general, pores of atomic to molecular size defined by those unique structures may be used for selective permeation or molecular sieving functions.
• These nanofilms may have regions composed primarily of one or more polymeric components.
• the polymeric components act as a plasticizer.
• regions composed primarily of one or more polymeric components may form a barrier to permeation by fluids, small molecules, biomolecules, solvent molecules, or ions.
• the porosity of the nanofilm is controlled by the type and degree of cross-linking of the polymeric components.
• a wide variety of structural features and properties such as amorphous, glassy, semicrystalline or crystalline structures, and elastomeric, pliable, thermoplastic, or deformation properties may be exhibited by the nanofilms.
• the various components such as, for example, modules and polymeric components, may be deposited on a surface to form a nanofilm. Macrocyclic modules can be oriented on a surface by providing functional groups on the modules which impart amphiphilic character to the modules.
• hydrophobic substituent groups or hydrophobic tails attached to the module may cause the module to reorient on the surface so that the hydrophobic substituents are oriented away from the surface, leaving a more hydrophilic facet of the module oriented toward the surface.
• Other components may also optionally similarly be oriented on the surface by providing amphiphilic groups in the component.
• the conformation of a molecule on a surface may depend on the loading, density, or state of the phase or layer in which the molecule resides on the surface. Surfaces which may be used to orient modules or other molecules include interfaces such as gas-liquid, air-water, immiscible liquid-liquid, liquid-solid, or gas-solid interfaces.
• the thickness of the oriented layer may, in some cases, be substantially a monomolecular layer thickness.
• the composition of the nanofilm may be solid, gel, or liquid.
• the modules of the nanofilm may be in an expanded state, a liquid state, or a liquid-expanded state.
• the state of the modules of the nanofilm may be condensed, liquid-condensed, collapsed, or may be a solid phase or close-packed state.
• the modules and or other components of the nanofilm may interact with each other by weak forces of attraction. Alternatively, they may be coupled through, for example, covalent bonds.
• the modules of a nanofilm prepared from surface-oriented macrocyclic modules need not be linked by any strong interaction or coupling.
• the modules of the nanofilm may be linked through, for example, covalent bonds.
• This invention further includes the rational design of molecules or macrocyclic modules that may be assembled as "building blocks” for further assembly into larger species.
• Standardized molecular subunits or modules may be used from which hierarchical molecules of predicted properties can be assembled. Coupling reactions can be employed to combine or attach modules in directed syntheses.
• this invention relates variously to nanofilm compositions having polymeric components.
• Polymeric components may be introduced into nanofilm compositions which contain macrocyclic modules.
• Nanofilm compositions may also be made from polymeric components coupled by linker molecules.
• Nanofilm compositions may also be made from polymeric components and amphiphilic molecules, wherein the amphiphilic molecules may optionally be polymerizable.
• a polymeric component is a polymerizable species, or a polymer or macromolecule of any molecular weight which is made of monomers.
• Polymerizable species include monomers, which are molecules that can be repeated in a polymer, and polymers, wherein the monomers or polymers have polymerizable or crosslinkable groups.
• Any polymeric component, polymerizable species, polymer, or monomer may also be amphiphilic.
• polymeric components include organic polymers, thermoplastics, synthetic and natural elastomers, conducting polymers, synthetic and natural biopolymers, and inorganic polymers.
• polymeric components of this invention include organic polymers containing atoms selected from H, C, N, O, S, F, and Cl.
• the polymeric component may be a homopolymer, or a mixed, block, or graft copolymer.
• Mixed polymers, block polymers, and copolymers include macromolecules having two, three, or more different monomers.
• the polymeric component may have any combination of the monomers or polymers which make up any of the example polymers described herein, or may be a blend of polymers. Mixtures of polymeric components may be used in variations of this invention. Examples of polymers include linear or branched, side-chain branched, or branched comb polymers.
• a polymer may be a star or dendrimeric form, or forms including microtubules, cylinders, or nanotubes of various compositions.
• Polymer branches may be long-chain branches or short-chain branches.
• the polymers may be made by synthetic methods, or may be obtained from naturally-occurring sources.
• a polymeric component may be in the form of a polymer when introduced into the mixture used to form a nanofilm.
• a polymeric component which is already in the form of a polymer when introduced into the mixture used to form a nanofilm may have amphiphilic character.
• a polymer having amphiphilic character may be more soluble in water than organic solvent, or vice-versa.
• a polymeric component may be a water soluble polymer having polar groups and amphiphilic character.
• the polymeric component may be in the form of a polymerizable molecule when introduced into the mixture used to form a nanofilm.
• Polymerizable molecules used to prepare a nanofilm include monomers.
• polymerizable molecules used to prepare a nanofilm may have amphiphilic character.
• the polymeric component of a nanofilm may be formed in-situ during preparation of the nanofilm from macrocyclic modules and/or other components. In-situ formation of the polymeric component of a nanofilm may be carried out by polymerization of a monomer or polymerizable amphiphile in a multicomponent mixture.
• Examples of a polymeric component include poly(maleic anhydrides), a copolymer of maleic anhydride, poly(ethylene-co-maleic anhydride), poly(maleic anhydride-co-alpha olefin), polyacrylates, a polymer or copolymer having acrylate side groups, a polymer or copolymer having oxacyclopropane side groups, polyethyleneimides, polyetherimides, polyethylene oxides, polypropylene oxides, polystyrenes, poly(vinyl acetate)s, polytetrafluoroethylenes, polyolefins, polyethylenes, polypropylenes, ethylene- propylene copolymers, polyisoprenes, neopropenes, polyanilines, polyacetylenes, polyvinylchlorides, polyvinylidene chlorides, polyvinylidene fluorides, polyvinylalcohols, polyurethanes, polyamides,
• Examples of a polymeric component also include amino-branched, amino-substituted, and amino-terminal derivatives of the preceding example polymers.
• Other examples of a polymeric component include polynucleotides, synthetic or naturally-occurring polynucleotides, for example, poly(T) and poly(A), nucleic acids, as well as proteoglycans, glycoproteins, and glycolipids.
• Examples of polymeric components which are polymerizable monomers include vinyl halide compounds such as vinyl chloride; vinylidene monomers such as vinylidene chloride; unsaturated carboxylic acids such as acrylic acid, methacrylic acid, maleic acid, itaconic acid, and salts thereof; acrylates such as methyl acrylate, ethyl acrylate, butyl acrylate, octyl acrylate, methoxyethyl acrylate, phenyl acrylate and cyclohexyl acrylate; methacrylates such as methyl methacrylate, ethyl methacrylate, butyl methacrylate, octyl methacrylate, phenyl methacrylate and cyclohexyl methacrylate; unsaturated ketones such as methyl vinyl ketone, ethyl vinyl ketone, phenyl vinyl ketone, methyl isobutenyl ketone and methyl is
• polymeric components which are polymerizable amphiphiles include long chain alkyl derivatives of vinyl halides, vinylidene halides, unsaturated carboxylic acids and salts thereof, acrylates, methacrylates, unsaturated ketones, vinyl esters, vinyl ethers, acrylamides, acid compounds containing a vinyl group, anhydrides, styrenes, allyl alcohol or esters or ethers thereof, vinylimides, vinyl compounds, unsaturated aldehydes, and vinyl compounds.
• polymeric components which are polymerizable amphiphiles generally include amphiphilic acrylates, amphiphilic acrylamides, amphiphilic vinyl esters, amphiphilic anilines, amphiphilic diynes, amphiphilic dienes, amphiphilic acrylic acids, amphiphilic enes, amphiphilic cinnamic acids, amphiphilic amino-esters, and amphiphilic oxiranes.
• polymeric components which are polymerizable amphiphiles include amphiphilic amines, amphiphilic diesters, amphiphilic diacids, amphiphilic diols, amphiphilic polyols, and amphiphilic diepoxides, any of which may be coupled with linker molecules.
• the polymeric component is poly(maleic anhydride-co-alpha olefin).
• the polymeric component is PMAOD.
• the polymeric component is PMMA.
• the polymeric component is PHEMA.
• the polymeric component is PGM.
• the polymeric component is PEI.
• a polymeric component may have an atom or a group of atoms which couple to other species or components of a nanofilm.
• Coupling of the polymeric component to other species in a nanofilm may be complete or incomplete.
• the polymeric component may couple to macrocyclic modules or linker molecules, or to other polymeric components, or to other species such as amphiphiles or monomers. Coupling of macrocyclic modules, linker molecules, or other species may be to domains of the polymeric component, occurring at the interface or surface of the domains.
• Amphiphilic molecules may be oriented on a surface such as an air-water interface in a Langmuir trough, and may be compressed to form a Langmuir thin film.
• the amphiphilic molecules of the Langmuir thin film may be coupled to each other or to other components, and may form a substantially monomolecular layer thin film material.
• the polar groups may be coupled together by coupling reactions to form a thin film material.
• the polar groups of the amphiphilic molecules may be linked directly to each other. For example, sulfhydryl groups may be coupled to form disulfide link, or polar groups having ester and amino groups may couple to attach the amphiphilic molecules through amide linkages. The coupling may attach more than two amphiphilic molecules, for example, by extended amide linkages.
• the polar groups of the amphiphilic molecules may also be linked to each other with a linker molecule.
• amino may be coupled by the Mannich reaction with formaldehyde.
• a portion of the amphiphilic molecules of the nanofilm may be coupled, while the rest are not coupled.
• the amphiphilic molecules of the nanofilm both those which are coupled and those which are not coupled, may also interact through weak non-bonding or bonding interactions such as hydrogen bonding and other interactions.
• the hydrophobic tails of the amphiphilic molecules may be any length, and are sometimes from about 1 to 28 carbon atoms. Examples of hydrophobic tails of the amphiphilic molecules include the hydrophobic groups which may be attached to macrocyclic modules to impart amphiphilic character to the modules.
• Preferred polymerizable amphiphiles include amphiphilic acrylates, amphiphilic acrylamides, amphiphilic vinyl esters, amphiphilic anilines, amphiphilic diynes, amphiphilic dienes, amphiphilic acrylic acids, amphiphilic enes, amphiphilic cinnamic acids, amphiphilic amino-esters, amphiphilic oxiranes, amphiphilic amines, amphiphilic diesters, amphiphilic diacids, amphiphilic diols, amphiphilic polyols, and amphiphilic diepoxides.
• Preferred non-polymerizable amphiphiles include decylamine and stearic acid. It is to be understood that these are “non-polymerizable amphiphiles" when they are non- polymerizable under the conditions in which the nanofilm is prepared. These may be considered polymerizable amphiphiles when included in other nanofilms, wherein the conditions of the preparation of those nanofilms could cause the amphiphiles to be polymerized.
• the amphiphile may be octadecylamine (ODA). In some embodiments, the amphiphile may be methylheptadecanoate (MHD). In some embodiments, the amphiphile may be N-octadecylacrylamide (ODAA). In some embodiments, the amphiphile may be decylamine. In some embodiments, the amphiphile may be stearic acid. In some embodiments, the amphiphile may be a methyl ester of stearic acid. In some embodiments, the amphiphile may be icosanol, or other long chain alkanol. Further examples of preferred amphiphiles may be found in the Examples, and in Tables 5-9.
• Pores and barrier properties are found in the structure of the nanofilm made by coupling amphiphilic molecules.
• the pores and barrier properties may be modified by the degree or extent of coupling or interaction of the amphiphilic molecules, and for example, by the length of the linker molecules.
• Macrocyclic modules and/or other components oriented on a surface may be coupled to form a thin layer composition or nanofilm.
• surface-oriented modules may be coupled in a two-dimensional array to form a substantially monomolecular layer nanofilm.
• the two-dimensional array is generally one molecule thick throughout the thin layer composition, and may vary locally due to physical and chemical forces.
• Coupling of modules and/or other components may be done to form a substantially two-dimensional thin film by orienting the modules and/or other components on a surface before or during the process of coupling.
• amphiphilic components may be oriented on an interface.
• water soluble components may be added to the subphase for the formation of a nanofilm. Components may also be mixed prior to orienting on an interface.
• Macrocyclic modules can be prepared to possess functional groups which permit coupling of the modules.
• the nature of the products formed by coupling modules depends, in one variation, on the relative orientations of the functional groups with respect to the module structure, and in other variations on the arrangement of complementary functional groups on different modules which can form covalent, non-covalent or other binding attachments with each other.
• a macrocyclic module includes functional groups which couple directly to complementary functional groups of other macrocyclic modules to form linkages between macrocyclic modules.
• the functional groups may in some cases contribute to the amphiphilic character of the module before or after coupling, and may be covalently or non-covalently attached to the modules.
• the functional groups are covalently attached to the modules.
• the functional groups may be attached to the modules before, during, or after orientation of the modules on the surface.
• a macrocyclic module includes functional groups which couple to polymeric components and or other components. Macrocyclic modules may be prepared with functional groups which couple to complementary functional groups of polymeric and/or other components to form linkages. The coupling between macrocyclic modules and these other components may be direct, or may occur through linker molecules.
• components such as polymeric components and amphiphiles may also comprise functional groups for coupling to themselves or to other components, such as coupling a polymeric component to another polymeric component, or coupling a polymeric component to an amphiphilic component.
• the functional groups may be attached to the components before, during, or after orientation of the components on a surface or subphase. In some cases, the functional groups impart amphiphilic character to the component, either before or after coupling.
• one or more coupling linkages may be formed between macrocyclic modules, and coupling may occur between macrocyclic modules and other components. In some variations, coupling may also occur between other components, for example, between amphiphilic groups and polymeric components.
• the linkage formed between, e.g., macrocyclic modules or between a macrocyclic module and another component may be the product of the coupling of one functional group from each molecule. For example, a hydroxyl group of a first macrocyclic module may couple with an acid group or acid halide group of a second macrocyclic module to form an ester linkage between the two macrocyclic modules.
• Examples of linkages between macrocyclic modules or between macrocyclic modules and other components are shown in Table 2.
• a macrocyclic module may have functional groups for coupling to other macrocyclic modules wherein the functional groups are coupled to the macrocyclic module after initial preparation of the closed ring of the module. For example, an amine linkage between the synthons of a macrocyclic module may be substituted with one of various functional groups to produce a substituted linkage. Examples of such linkages between synthons of a macrocyclic module having functional groups for coupling other macrocyclic modules are shown in Table 3.
• X is halogen
• Q represents a synthon in a macrocyclic module.
• the substituted linkage of a macrocyclic module may couple to a substituted linkage of another module.
• the coupling of these linkages is done by initiating 2+2 cycloaddition.
• acrylamide linkages may couple to produce Q R r ⁇ ⁇ 2 by 2+2 cycloaddition.
• coupling of these reactive substituted linkages may be initiated by other chemical, thermal, photochemical, electrochemical, and irradiative methods to provide a variety of coupled structures.
• the functional groups and substituted linkages formed included in Table 3 may also be used to link a module with another component, such as a polymeric component, and may also be used to link non-module components together, such as a polymeric component to an amphiphilic component.
• the functional groups used to form linkages between macrocyclic modules and/or other components may be separated from the module or component by a spacer.
• a spacer can be any atom or group of atoms which couples the functional group to the macrocyclic module or other component, and does not interfere with the linkage-forming reaction.
• a spacer is part of the functional group, and becomes part of the linkage between macrocyclic modules and/or other components.
• spacer is a polymethylene group, -(CH2)n-, where n is 1-6.
• the spacer may be said to extend the linkage between macrocyclic modules and/or other components.
• Other examples of spacer groups are alkylene, aryl, acyl, alkoxy, saturated or unsaturated cyclic hydrocarbon, heteroaryl, heteroarylalkyl, heterocyclic, and corresponding substituted groups.
• spacer groups are polymer, copolymer, or oligomer chains, for example, polyethylene oxides, polypropylene oxides, polysaccharides, polylysines, polypeptides, poly(amino acids), polyvinylpyrrolidones, polyesters, polyacrylates, polyamines, polyimines, polystyrenes, poly(vinyl acetate)s, polytetrafluoroethylenes, polyisoprenes, neopropene, polycarbonate, polyvinylchlorides, polyvinylidene fluorides, polyvinylalcohols, polyurethanes, polyamides, polyimides, polysulfones, polyethersulfones, polysulfonamides, polysulfoxides, and copolymers thereof.
• polymer chain spacer structures include linear, branched, comb and dendrimeric polymers, random and block copolymers, homo- and heteropolymers, flexible and rigid chains.
• the spacer may be any group which does not interfere with formation of the linkage.
• a spacer group may be substantially longer or shorter than the functional group to which it is attached.
• Coupling of macrocyclic modules and/or other components to each other may occur through coupling of functional groups of the macrocyclic modules and/or other components to linker molecules.
• the functional groups involved may be, for example, those exemplified in Table 2.
• modules may couple to at least one other module through a linker molecule.
• a linker molecule is a discrete molecular species used to couple at least two modules.
• Each module may have 1 to 30 or more functional groups which may couple to a linker molecule.
• Linker molecules may have 1 to 20 or more functional groups which may couple to, for example, a module.
• a linker molecule has at least two functional groups, each of which can couple to a module and or other component.
• linker molecules may include a variety of functional groups for coupling modules and/or other components. Non-limiting examples of functional groups of modules and linker molecules are illustrated in Table 4.
• phenyl, R" is -(CH 2 )-, polyethylene glycol (PEG), or polypropylene glycol (PPG), and X is Br, Cl, I, or other good leaving groups which are organic groups containing atoms selected from the group of carbon, oxygen, nitrogen, halogen, silicon, phosphorous, sulfur, and hydrogen.
• a module may have a combination of the various functional groups exemplified in Table 4. It is to be understood that the functional groups and linkers included in Table 4 may also be used to link a module with another component, such as a polymeric component, and may also be used to link non-module components together, such as a polymeric component to an amphiphilic component. Preferred linkers include DEM and ethylene diamine. Further examples of suitable linkers are found in the Examples, and in Tables 5-9. [0124] Methods of initiating coupling of the modules and or components to linker molecules include chemical, thermal, photochemical, electrochemical, and irradiative methods.
• a nanofilm comprising coupled modules and/or other components can be made by coupling together one or more members of the collection of modules and/or other components, perhaps with other bulky or flexible components, to form a thin layer nanofilm material or composition. Coupling of modules and/or other components may be complete or incomplete, providing a variety of structural variations useful as nanofilm membranes.
• the coupling of polymeric components to macrocyclic modules to prepare a nanofilm may be done with myriad combinations of complementary functional groups.
• macrocyclic modules which may couple to other macrocyclic modules through linker molecules may also couple to polymeric components and other components having complementary functional groups.
• a polymeric component having amino functional groups for example, may couple to linker molecules and compete with the macrocyclic modules for coupling to other macrocyclic modules.
• a macrocyclic module having amino functional groups may couple to poly(ethylene-co-maleic anhydride) to form a maleimide group in the polymer.
• the various types and degrees of coupling depend on the identity of the functional groups of the polymeric components.
• the species may copolymerize. Copolymerization may involve coupling to functional groups of macrocyclic modules.
• the coupling of modules in a nanofilm may attach two or more components by a linkage or linkages.
• the coupling may attach more than two modules, for example, by an array of linkages each formed between two modules.
• Each module may form more than one linkage to another module, and each module may form several types of linkages, including those exemplified in Tables 2-4.
• a module may have direct linkages, linkages through a linker molecule, and linkages which include spacers, in any combination.
• a linkage may connect any portion of a module to any portion of another module.
• An array of linkages and an array of modules may be described in terms of the theory of Bravais lattices and theories of symmetry.
• a portion of each of the components of a nanofilm may be coupled, while the remainder of each is not coupled.
• the components of the nanofilm may interact through, for example, hydrogen bonding, van der Waals, and other interactions.
• the arrangement of linkages formed in a nanofilm may be represented by a type of symmetry, or may be substantially unordered.
• a nanofilm may be prepared from mixtures of macrocyclic modules and other components.
• the types of coupling between the components and the phase and domain behavior of the mixture, as described herein, may influence the composition and properties of the product nanofilm. Multicomponent mixtures of these types sometimes result in phase separated or aggregated compositions.
• a macrocyclic module may participate in more than one type of coupling, and the product nanofilm may have a wide variety of compositions.
• this invention relates to the introduction of polymeric components into nanofilms comprising macrocyclic modules.
• Various types of coupling may be used to prepare a nanofilm with macrocyclic modules and polymeric components.
• a macrocyclic module may have functional groups which couple to a linker molecule which, in turn, couples to another macrocyclic module or other species, but may not effectively couple to a polymeric component.
• the macrocyclic module may couple much more rapidly to another macrocyclic module than to the polymeric component, and form a nanofilm in which the degree of coupling between macrocyclic modules and the polymeric component is limited.
• a macrocyclic module having amino functional groups may couple readily with a linker molecule such as ClC(O)CH2C(O)Cl, but not as readily with some polymeric components.
• a macrocyclic module may not have functional groups which readily couple to other components.
• An example of this type is a macrocyclic module having imine linkages and only alkyl substituents which may not readily couple to other macrocyclic modules, polymeric components, or other species.
• a macrocyclic module which does not readily couple to other species may form a nanofilm with polymeric components without substantial coupling between macrocyclic modules and polymeric components.
• this invention involves the formation of a nanofilm using multicomponent mixtures of macrocyclic modules and polymeric components, wherein the macrocyclic modules may not directly couple to other macrocyclic modules or to polymeric components in forming the nanofilm, and wherein the macrocyclic modules may be coupled through linker molecules.
• linker molecules may be coupled through linker molecules.
• the multicomponent mixture of macrocyclic modules may include a polymer, or an amphiphilic polymer, or mixtures thereof.
• macrocyclic modules having amino functional groups are mixed with polymethylmethacrylate (PMMA), which is immiscible with water.
• PMMA polymethylmethacrylate
• the macrocyclic modules are then coupled with linker molecules ClC(O)CH2C(O)Cl.
• the macrocyclic modules may not couple directly to polymeric components, except at interfaces between phases. Even where the macrocyclic modules and polymeric components form a single continuous phase, the macrocyclic modules may be coupled predominantly to other macrocyclic modules. In nanofilms where macrocyclic modules and polymeric components are phase separated, surface coupling and other adhesion of various domains may occur.
• multicomponent mixtures of macrocyclic modules used to prepare nanofilm may include a polymer and/or an amphiphilic polymer, and may further include a molecule which is amphiphilic which may or may not be polymerizable, or a monomer which is polymerizable, or mixtures thereof.
• multicomponent mixtures of macrocyclic modules used to prepare nanofilms may include a polymerizable amphiphile or a polymerizable monomer species, or mixtures thereof. These nanofilms may optionally include a non-polymerizable amphiphilic species.
• multicomponent mixtures of macrocyclic modules used to prepare nanofilm may optionally include amphiphilic molecules which may have a functional group that can couple to macrocyclic modules or to polymeric components.
• this invention involves formation of nanofilm using multicomponent mixtures of macrocyclic modules and polymeric components, where the macrocyclic modules may not readily couple to the polymeric components or to other macrocyclic modules.
• Table 6 Schemes to prepare nanofilm from macrocyclic modules which may not readily couple
• n is about 3 to about 1 ,000,000.
• the multicomponent mixture of macrocyclic modules may include a polymer, or an amphiphilic polymer, or mixtures thereof. In these schemes, the macrocyclic modules may not readily couple to polymeric components or to other modules, but may undergo some degree of coupling to either the polymeric components or other modules.
• multicomponent mixtures of macrocyclic modules used to prepare nanofilm may include a polymer and/or an amphiphilic polymer, and may further include a molecule which is amphiphilic and may be polymerizable, or a monomer which is polymerizable, or mixtures thereof.
• multicomponent mixtures of macrocyclic modules used to prepare nanofilms may include a polymerizable amphiphile or a polymerizable monomer species, or mixtures thereof. These nanofilms may optionally include a non-polymerizable amphiphilic species.
• multicomponent mixtures of macrocyclic modules used to prepare nanofilm may further include amphiphilic molecules which may have a functional group that can couple to macrocyclic modules or to polymeric components.
• this invention relates to the formation of nanofilms using multicomponent mixtures of macrocyclic modules and polymeric components, wherein the macrocyclic modules may directly couple to the polymeric components, or to other macrocyclic modules.
• Table 7 Various schemes for the preparation of such nanofilms are illustrated in Table 7.
• the multicomponent mixture of macrocyclic modules may include a polymer, or an amphiphilic polymer, or mixtures thereof. In these schemes, the macrocyclic modules may in some cases couple directly to polymeric components, and may form a single phase.
• multicomponent mixtures of macrocyclic modules used to prepare nanofilm may include a polymer and/or an amphiphilic polymer, and may further include a molecule which is amphiphilic which may or may not be polymerizable, or a monomer which is polymerizable, or mixtures thereof.
• multicomponent mixtures of macrocyclic modules used to prepare nanofilms may include a polymerizable amphiphile or a polymerizable monomer species, or mixtures thereof. These nanofilms may optionally include a non-polymerizable amphiphilic species.
• multicomponent mixtures of macrocyclic modules used to prepare nanofilm may also include amphiphilic molecules which may have a functional group that can couple to macrocyclic modules or to polymeric components.
• the type of coupling in which a macrocyclic module participates to form a nanofilm may depend on the presence of other components of the nanofilm.
• a macrocyclic module with acrylate functional groups may couple much more rapidly to itself than to a polymeric component with less reactive groups.
• a macrocyclic module may participate in more than one type of coupling.
• a macrocyclic module which may couple directly to another macrocyclic module may also couple through a linker molecule to another macrocyclic module. Both types of coupling may occur in the same multicomponent mixture used to prepare a nanofilm.
• a macrocyclic module may have functional groups which couple directly to complementary functional groups of another macrocyclic module.
• An example of this form is a macrocyclic module having acrylamide functional groups.
• the macrocyclic module may couple much more rapidly to another macrocyclic module than to any polymeric component, and form a nanofilm in which the degree of coupling between macrocyclic modules and the polymeric component is limited.
• the polymeric component may have complementary functional groups which effectively compete for the coupling groups of macrocyclic modules.
• the macrocyclic module may couple as rapidly to another macrocyclic module as it does to the polymeric component, and may form a nanofilm in which the degree of coupling between the macrocyclic modules themselves is comparable to that between the macrocyclic modules and the polymeric component.
• the degree of coupling between the macrocyclic modules and the polymeric component may exceed that between the macrocyclic modules themselves.
• a nanofilm may be prepared by various methods where the macrocyclic modules couple directly to a polymeric component. For example, as shown in Table 7, the macrocyclic modules and polymeric component may be dissolved in organic solvent and coupled together before preparation of a nanofilm.
• a substantially single continuous phase within the nanofilm may result in a substantially single continuous phase within the nanofilm.
• the macrocyclic modules may be coupled to the polymeric component during or after preparation of the nanofilm layer.
• a nanofilm of this invention may be formed from macrocyclic modules having functional groups which may couple directly to complementary functional groups of a polymeric component. In these variations, the macrocyclic modules may not readily couple to other macrocyclic modules. Schemes for the preparation of such nanofilms are illustrated in Table 8.
• the multicomponent mixture of macrocyclic modules may include a polymer, or an amphiphilic polymer, or mixtures thereof.
• the macrocyclic modules directly couple to polymeric components, but may not readily couple to other modules.
• a discrete product is formed from the coupling of macrocyclic modules to a polymeric component.
• the discrete module-polymer product may be similar in molecular architecture to a side-group branched polymer, or a graft polymer.
• the discrete product may have a predominantly single continuous phase.
• secondary amine linkages between synthons of a macrocyclic module may couple to a carboxylic acid side group of a copolymer such as the diacid form of poly(ethylene-co-maleic anhydride).
• macrocyclic modules couple to polymeric components, and both may be miscible in water.
• the coupling between the macrocyclic module and the polymeric component may also be indirect, and involve a linker molecule.
• multicomponent mixtures of macrocyclic modules used to prepare nanofilm may also include amphiphilic molecules which may have a functional group that can couple to macrocyclic modules or to polymeric components.
• this invention relates to the introduction of polymeric components into nanofilms comprising amphiphiles.
• Various types of coupling may be used to prepare a nanofilm comprising amphiphiles and polymeric components.
• an amphiphile may contain a polymerizable functional group, such as an acrylate group.
• a polymeric component of a nanofilm may be formed in-situ with the nanofilm by using a multicomponent mixture which includes a polymerizable amphiphile, and which may also optionally include a polymerizable monomer.
• amphiphilic molecule which does not have a polymerizable functional group may be used.
• amphiphiles may be mixed with polymer, amphiphilic polymer, polymerizable monomer, polymerization amphiphile, or mixtures thereof to form a nanofilm having polymeric components.
• phase and domain behavior of the mixture may influence the composition and properties of the nanofilm.
• Scheme 9 Various schemes for the preparation of nanofilms with polymeric components and amphiphiles are illustrated in Table 9.
• polymerizable amphiphile polymerizable monomer ⁇ s> ⁇ -OH polymerizable amphiphile polymer ic amphiphilic polymer
• a nanofilm is prepared with polymerizable amphiphiles.
• a polymeric component may be formed in-situ from the polymerizable amphiphiles.
• the mixtures used to form such nanofilms may further include a polymer, or an amphiphilic polymer, a polymerizable monomer, an amphiphile, or mixtures thereof.
• a nanofilm may be prepared from a polymer, an amphiphilic polymer, or a polymerizable monomer.
• the nanofilms may optionally include an amphiphile.
• Nanofilms of Polymeric Components [0164] In one aspect, this invention relates variously to nanofilms prepared from polymeric components.
• the polymeric components may be directly linked to each other, or may be linked via linker molecules.
• a LB film of PGM may be crosslinked with ethylene diamine to form a nanofilm.
• a LB film of polyethylene imine (PEI) o ' — v ' — * n may be crosslinked with diethylene glycol diglycidyl ether:_ i - i/ ⁇ ° ⁇ _* to form a nanofilm.
• PEI polyethylene imine
• the characteristics of a nanofilm having one or more polymeric components may be substantially different than those of nanofilm prepared from macrocyclic modules alone.
• a nanofilm having polymeric components may be advantageously flexible and pliable compared to nanofilm prepared from modules alone, making it easier to fabricate articles such as membranes for filtration and other separation processes.
• Various domains of a nanofilm having polymeric components may undergo plastic deformation in response to stress, while other regions may be elastomeric.
• Nanofilms having polymeric components may be deposited on a substrate to form a continuous, substantially unbroken supported nanofilm or membrane.
• nanofilm having one or more polymeric components may be dependent, in part, on the fraction of polymeric component relative to macrocyclic modules or other components, these properties can be varied by changing the fraction of polymeric component in the nanofilm.
• components which are polymerizable may be used to prepare a polymeric component of a nanofilm in-situ during formation of the nanofilm. In-situ formation of a nanofilm polymeric component provides an alternative scheme in which phase and domain behavior of the multicomponent mixture may be modified.
• Schemes involving polymerizable species in a multicomponent mixture may be used to prepare, among other compositions, nanofilm having smaller domains of phase separated polymeric components as compared to nanofilm prepared with polymer or amphiphilic polymer components alone.
• Multicomponent mixtures involving a polymerizable amphiphile may be used to prepare nanofilm with fewer openings of micrometer dimension through which transport of species can occur, as compared to nanofilm prepared with polymer or amphiphilic polymer components alone.
• the polymeric molecules may not be coupled to other components of the nanofilm.
• the ability of a polymeric component to make a nanofilm flexible or pliable may not require coupling to macrocyclic modules or other components.
• the area fraction of a component of a nanofilm is the fraction of the total nanofilm area that the individual component represents.
• the nanofilm area fraction of a component is calculated from the mole fraction (Mf) of the component in the initial mixture of components used to form the nanofilm, and the mean molecular area (MMA) of the component obtained by extrapolation of the high-surface pressure region of the pressure-area Langmuir isotherm of the pure component to zero surface pressure.
• area fraction can be measured where all nanofilm components are immiscible in water or are amphiphilic, and all nanofilm components are found in the initial mixture of components.
• the uncertainty in measurement of area fraction may be up to about 20%, which includes uncertainty due to extrapolation of Langmuir isotherms, and for polymeric components which are polymers in the initial mixture of components, uncertainty due to molecular weight polydispersity of the polymer.
• the nanofilm area fraction of a component may not always be measured by the above formula. For example, the area fraction of a component which was not in the initial mixture of components used to form the nanofilm, but entered the nanofilm later, would not be measured by the formula above.
• the area fraction of a component may also not be measured by the formula above when the component does not form a stable Langmuir film for which MMA can be measured, or when a polymerizable component is used in the initial mixture which may have an MMA different from the polymer it produces.
• a nanofilm may have any area fraction of polymeric components.
• a nanofilm may have an area fraction of polymeric components from about 0.005 (0.5%) to about 0.98 (98%).
• a nanofilm may have an area fraction of polymeric components from about 0.005 to about 0.7, often from about 0.005 to about 0.5, sometimes from about 0.005 to about 0.3, sometimes from about 0.005 to about 0.2, sometimes from about 0.005 to about 0.1, sometimes from about 0.005 to about 0.05, sometimes from about 0.005 to about 0.02, sometimes from about 0.50 to about 0.98.
• a nanofilm may have an area fraction or weight percent of polymeric components sufficient to make it flexible and pliable so that it may be deposited on a substrate as a homogeneous film with little mechanical breakage, or to reduce the surface modulus of the nanofilm. Flexibility of a nanofilm having polymeric components may be demonstrated by depositing the nanofilm on various substrates to form a continuous, substantially unbroken film on the substrate, or by reducing surface modulus of the nanofilm.
• a nanofilm may have any molar ratio of polymeric components, as measured against the other components.
• the molar ratio of polymeric components may be, for example, about 0.005 to about 0.995, for example about 0.010 to about 0.990, for example, about 0.01 to about 0.50, for example about 0.01 to about 0.20, for example, about 0.20 to about 0.50, for example about 0.50 to about 0.99, for example, about 0.1 to about 0.9, as measured against the other components.
• the molar ratio of polymeric component: module is about 0.1:0.9, about 0.2:0.8, about 0.5:0.5, about 0.25:0.75, or about 0.90:0.10.
• the thickness of nanofilms described herein, whether through coupled or non coupled components, is exceptionally small, often being less than about 30 nanometers, sometimes less than about 20 nanometers, and sometimes from about 1-15 nanometers.
• the thickness of a nanofilm depends partly on the structure and nature of the groups on the modules or other species which impart amphiphilic character to the modules, and partly on the nature of the polymeric or other components. The thickness may be dependent on temperature, and the presence of solvent on the surface or located within the nanofilm.
• the thickness may be modified if the groups on the modules or other components which impart amphiphilic character, in particular the lipophilic moiety, to the component are removed or modified after the components have been coupled, or at other points during or after the process of preparation of a nanofilm.
• the thickness of a nanofilm may also depend on the structure and nature of the surface attachment groups on the components.
• the thickness of nanofilms may be less than about 300, 250, 200, 150, 100, 90, 80, 70, 60, 50, 40, 30, 20, 10 or 5 A.
• the nanofilm composition may include uniquely structured regions in which modules and/or other components are coupled. Coupling of modules and/or other components provides a nanofilm in which unique structures may be formed. Nanofilm structures define pores through which atoms, molecules, or particles of only up to a certain size and composition may pass.
• One variation of a nanofilm structure includes an area of nanofilm able to face a fluid medium, either liquid or gaseous, and provide pores or openings through which atoms, ions, small molecules, biomolecules, or other species are able to pass.
• the dimensions of the pores defined by nanofilm structures may be exemplified by quantum mechanical calculations and evaluations, and physical tests, as further described in the following Examples.
• the dimensions of the pores defined by nanofilm structures are described by actual atomic and chemical structural features of the nanofilm.
• the approximate diameters of pores formed in the structure of a nanofilm are from about 1-150 A, or more. In some embodiments, the dimensions of the pores are about 1-10 A, about 3-15 A, about 10-15 A, about 15-20 A, about 20-30 A, about 30-40 A, about 40-50 A, about 50-75 A, about 75- 100 A, about 100-125 A, about 125-150 A, about 150-300 A, about 600-1000 A.
• the approximate dimensions of pores formed in the structure of a nanofilm are useful to understand the porosity of the nanofilm.
• a nanofilm structure may comprise an array of coupled modules which provides an array of pores of substantially uniform size.
• the pores of uniform size may be defined by the individual modules themselves.
• Each module defines a pore of a particular size, depending on the conformation and state of the module.
• the conformation of the coupled module of the nanofilm may be different from the nascent, pure macrocyclic module in a solvent, and both may be different from the conformation of the amphiphilic module oriented on a surface before coupling.
• a nanofilm structure including an array of coupled modules can provide a matrix or lattice of pores of substantially uniform dimension based on the structure and conformation of the coupled modules.
• Modules of various composition and structure may be prepared which define pores of different sizes.
• a nanofilm prepared from coupled modules may be made from any one of a variety of modules. Thus, nanofilms having pores of various dimensions are provided, depending on the particular module used to prepare the nanofilm.
• nanofilm structures define pores in the matrix of coupled modules or other components. Pores defined by nanofilm structures may have a wide range of dimensions, for example, dimensions capable of selectively blocking the passage of small molecules or large molecules.
• nanofilm structures may be formed from the coupling of two or more modules, in which an interstitial pore is defined by the combined structure of the linked modules.
• a nanofilm may have an extended matrix of pores of various dimensions and characteristics. Interstitial pores may be, for example, less than about 5 A, less than about 10 A, about 3-15 A, about 10-15 A, about 15-20 A, about 20-30 A, about 30-40 A, about 40-50 A, about 50-75 A, about 75-100 A, about 100-125 A, about 125-150 A, about 150-300 A, about 300-600 A, about 600-1000 A.
• the other components may act as a "filler" to limit the porosity of the nanofilm. In other variations, the other components will provide porosity to the nanofilm, depending on the type and extent of cross-linking between the components.
• the coupling process may result in a nanofilm in which regions of the nanofilm are not precisely monomolecular layers.
• Local structural features may include amphiphilic components or species, including polymeric species, which are flipped over relative to their neighbors, or turned in a different orientation, having their hydrophobic and hydrophilic facets oriented differently than neighboring species.
• Local structural features may also include overlaying or stacking of molecules in which the nanofilm is two or more molecular layers thick, local regions in which the interlinking of the modules or other components is not complete so that some of the available coupling groups are not coupled to other species, or local regions in which there is an absence of a particular molecule or component.
• the nanofilm has a thickness of up to 30 nanometers due to the layering of nanofilm structures.
• the nanofilms disclosed herein may be substantially uniform with respect to the orientation of their amphiphilic components, but may in some embodiments comprise regions of local structural features as indicated hereinabove. Local structural features may comprise, for example, greater than about 30%, less than about 30%, less than about 20%, less than about 15%, less than about 10%, less than about 5%, less than about 3%, less than about 1% of the surface area of the nanofilm. Phase And Domain Behavior Of Nanofilm
• the nanofilm may have domains in which a polymeric component or components are intermixed at the atomic level with macrocyclic modules or other species, and solubilized with each other.
• the macrocyclic modules or other species may be miscible with the polymeric component.
• the polymeric molecules, macrocyclic modules, or other components may be located in finite- sized aggregates. Above some critical concentration in a particular solvent, polymeric molecules, macrocyclic modules, or other components may collect into finite-sized aggregates. These finite-sized aggregates may persist at the air-water interface in formation of a nanofilm.
• the structure of the aggregates may be affected by the geometry and shape of the molecules, among other factors, or the capability of the molecules to couple in particular orientations with other species.
• the structure of the aggregates may be highly dynamic with motion and exchange of the molecules at various rates.
• the self assembled aggregates of one species may be interspersed in a continuous phase of another species, where the other species is not aggregated.
• Different molecules or components may form separate aggregates, or be combined in an aggregate structure. Coupling between macrocyclic modules or other components and the polymeric molecules may occur at a surface, edge, or point of the self assembled aggregates.
• the polymeric molecules may reside in domains that are substantially polymeric, which may be interspersed with domains composed substantially of other species.
• a polymeric component may be immiscible or phase separated from macrocyclic modules or other components.
• Phase separation may occur when the aggregation of polymeric molecules is not limited to a small finite size, but may continue until regions of polymeric molecules are separated from regions of other molecules.
• the form of a polymeric component in these variations may be a solid, gel, or liquid-like polymer melt, or an amorphous composition, in the form of layers, beads, discs or mixtures thereof, and can be homogeneous or heterogeneous in structure or composition.
• Polymeric components of such nanofilms may form hard and soft domains typical of thermoplastic elastomers, or a polymeric component may form a soft domain relative to a hard domain of macrocyclic modules.
• a polymeric component may form regions which are amorphous, glassy, semicrystalline, or crystalline, or have subregions with those characteristics.
• a region of a polymeric component may exhibit rubberlike elasticity or viscoelastic states.
• Different polymeric components may form separate phases, or may be miscible with each other while remaining immiscible with macrocyclic modules or other components. Coupling between macrocyclic modules or other components and polymeric molecules may occur at or near the interface between the phases, and may contribute to adhesion of the phases.
• a nanofilm may also be prepared with mixtures of different macrocyclic modules, or with mixtures of macrocyclic modules, polymeric components, and other species.
• a nanofilm may have an array of coupled modules and other species in which the positional ordering of the modules and other species is random, or is non-random with regions in which one type of species is predominant.
• the polymeric component may be intermixed, aggregated, or phase separated from the macrocyclic modules and other species, as described above.
• Nanofilms made from mixtures of different modules, or with mixtures of macrocyclic modules and other amphiphilic molecules may also have interspersed arrays of pores of various sizes.
• a monolayer of oriented amphiphilic species for example amphiphilic modules, amphiphilic polymers, and/or amphiphiles, is formed on the surface of a liquid subphase.
• the amphiphilic components may be dissolved in a solvent and deposited on an air-subphase interface in a Langmuir trough to form the monolayer.
• movable plates or barriers are used to compress the monolayer and decrease its surface area to form a more dense monolayer. At various degrees of compression, having corresponding surface pressures, the monolayer may reach various condensed states.
• Surfaces which may be used to orient amphiphiles include interfaces such as gas-liquid, air-water, immiscible liquid-liquid, liquid-solid, or gas-solid interfaces.
• the thickness of the oriented layer may be substantially a monomolecular layer thickness.
• Nanofilms may be prepared by various alternative methods.
• linker molecules may be added to the solution containing the modules and/or other components, which is subsequently deposited on the surface of the Langmuir subphase.
• the linker molecules may be added to the water subphase of the Langmuir trough, and subsequently transfer to the layer phase containing macrocyclic module and or other components for coupling.
• a water-soluble polymeric component may be added to the subphase of a Langmuir trough.
• a polymeric component may be dissolved in water or solvent and spread on an interface.
• One or more polymeric components may be co-spread on an interface with macrocyclic modules, and optionally with linker molecules.
• one or more polymeric components may be co- spread on an interface with macrocyclic modules and or linker molecules, and or other amphiphilic molecules.
• macrocyclic modules and/or other components may be added to the subphase of the Langmuir trough, and subsequently transfer to the interface.
• Other variations will be apparent to those of skill in the art.
• coupling of the components of a nanofilm may be initiated by chemical, thermal, photochemical, electrochemical, and irradiative methods.
• the type of coupling of the components of a nanofilm may depend on the type of initiation and the chemical process involved. For example, in forming a nanofilm from a multicomponent mixture, species in the mixture which are polymerizable may produce polymeric components by non-selective chain or addition polymerization.
• the type of the coupling of macrocyclic modules to polymerizable species or polymeric components depends on the functional groups of the modules. For example, free radical polymerization of unsaturated polymeric components, amphiphiles, or monomers may couple polymeric components to benzene synthons of macrocyclic modules, or to other reactive or unsaturated sites.
• Functional groups added to the modules or other components to impart amphiphilic character may in some embodiments be removed during or after formation of the nanofilm.
• groups which impart amphiphilic character to a polymeric component may be removed after formation of the nanofilm.
• groups which impart amphiphilic character to macrocyclic modules may be removed after formation of the nanofilm. The method of removal depends on the functional group.
• the groups attached to the modules which impart amphiphilic character to the component may include functional groups which can be used to remove the groups at some point during or after the process of formation of a nanofilm. Acid or base hydrolysis may be used to remove groups attached to the component via a carboxylate or amide linkage.
• An unsaturated group located in the functional group which imparts amphiphilic character to the module may be oxidized and cleaved by hydrolysis. Photolytic cleavage of the functional group which imparts amphiphilic character to the module may also be done. Examples of cleavable functional groups include
• n is zero to four, which is cleavable by light activation, and where n is zero to four, and m is 7 to 27, which is cleavable by acid or base catalyzed hydrolysis.
• Examples of functional groups added to the components to impart amphiphilic character to the modules include alkyl groups, alkoxy groups, -NHR, -OC(O)R, -C(O)OR,
• the multicomponent mixtures of macrocyclic modules and/or other components may include additives, dispersants, surfactants, excipients, compatiblizers, emulsifiers, suspension agents, plasticizers, or other species which modify the properties of the components.
• compatiblizers may be used to reduce domain sizes and form more continuous phase dispersion of the components of a nanofilm.
• the nanofilm may be derivatized to provide biocompatability or reduce fouling of the nanofilm by attachment or adsorption of biomolecules.
• Nanofilms may be deposited on a substrate by various methods, such as Langmuir-Schaefer, Langmuir-Blodgett, or other methods used with Langmuir systems.
• a nanofilm is deposited on a substrate in a Langmuir tank by locating the substrate in the subphase beneath the air- water interface, and lowering the level of the subphase until the nanofilm lands gently on the substrate and is therefore deposited.
• a description of Langmuir films and substrates is given in U.S. Patents Nos. 6,036,778, 4,722,856, 4,554,076, and 5,102,798, and in R. A. Hendel et al., Vol. 119, J Am.
• nanofilm having polymeric components include forced removal of solvent to prepare a film, such as spin coating methods and spray coating methods, as well as coating and deposition methods including interfacial, dip coating, knife-edge coating, grafting, casting, phase inversion, or electroplating or other plating methods.
• Nanofilms deposited on a substrate may be cured or annealed by chemical, thermal, photochemical, electrochemical, irradiative or drying methods during or after deposition on a substrate.
• chemical methods include reactions with vapor phase reagents such as ethylenediamine or solution phase reagents.
• a nanofilm treated by any method to attach or couple it to a substrate may be said to be cured.
• the deposition may result in non-covalent or weak attachment of the nanofilm to the substrate through physical interactions and weak chemical forces such as van der Waals forces and weak hydrogen bonding.
• the nanofilm may in some embodiments be bound to the substrate through ionic or covalent interaction, or other type of interaction.
• the substrate may be any surface of any material.
• Substrates may be porous or non-porous, and may be made from polymeric and inorganic substances.
• porous substrates are plastics or polymers, track-etch polycarbonate, track-etch polyester, polyethersulfone, polysulfone, gels, hydrogels, cellulose acetate, polyamide, PVDF, polyethylene terephthalate or polybutylene terephthalate, polyvinyl chloride, polyvinylidene chloride, polytetrafluoroethylene, polyethylene or polypropylene, ceramics, anodic alumina, laser ablated and other porous polyimides, and UV etched polyacrylate.
• non-porous substrates are silicon, germanium, glass, metals such as platinum, nickel, palladium, aluminum, chromium, niobium, tantalum, titanium, steel, or gold, glass, silicates, aluminosilicates, non-porous polymers, and mica.
• substrates include diamond and indium tin oxide.
• Preferred substrates include silicon, gold, SiO 2 , polyethersulfone, and track etch polycarbonate. In some embodiments, the substrate is SiO 2 . In other embodiments, the substrate is polycarbonate track etch membrane.
• Substrates may have any physical shape or form including films, sheets, plates, or cylinders, and may be particles of any shape or size.
• a nanofilm deposited on a substrate may serve as a membrane. Any number of layers of nanofilm may be deposited on the substrate to form a membrane. In some variations, nanofilm is deposited on both sides of a substrate.
• a layer or layers of various spacing materials may be deposited or attached in between layers of a nanofilm, and a spacing layer may also be used in between the substrate and the first deposited layer of nanofilm.
• spacing layer compositions include polymeric compositions, hydrogels (acrylates, poly vinyl alcohols, polyurethanes, silicones), thermoplastic polymers (polyolefins, polyacetals, polycarbonates, polyesters, cellulose esters), polymeric foams, thermosetting polymers, hyperbranched polymers, biodegradable polymers such as polylactides, liquid crystalline polymers, polymers made by atom transfer radical polymerization (ATRP), polymers made by ring opening metathesis polymerization (ROMP), polyisobutylenes and polyisobutylene star polymers, and amphiphilic polymers.
• spacing layer compositions include inorganics, such as inorganic particles such as inorganic microspheres, colloidal inorganics, inorganic minerals, silica spheres or particles, silica sols or gels, clays or clay particles, and the like.
• examples of amphiphilic molecules include amphiphiles containing polymerizable groups such as diynes, enes, or amino-esters.
• the spacing layers may serve to modify barrier properties of the nanofilm, or may serve to modify transport, flux, or flow characteristics of the membrane or nanofilm. Spacing layers may serve to modify functional characteristics of the membrane or nanofilm, such as strength, modulus, or other properties.
• the polymeric components of a nanofilm may provide a spacing layer between the nanofilm and a substrate.
• a nanofilm having polymeric components may be deposited on a surface and adhere to the surface to a degree sufficient for many applications, such as filtration and membrane separations, without coupling to the surface. Nanofilm having polymeric components may be advantageously cohesive to a substrate, which may include some coupling interactions.
• a nanofilm may be coupled to a substrate surface.
• Surface attachment groups may be provided on a polymeric component of a nanofilm, which may be used to couple the nanofilm to the substrate. Coupling of some, but not all of the surface attachment groups may be done to attach the nanofilm to the substrate.
• surface attachment groups may be provided on the macrocyclic modules and/or other components of a nanofilm.
• Examples of functional groups which may be used as surface attachment groups to couple a nanofilm to a substrate include amine groups, carboxylic acid groups, carboxylic ester groups, alcohol groups, glycol groups, vinyl groups, styrene groups, epoxide groups, thiol groups, magnesium halo or Grignard groups, acrylate groups, acrylamide groups, diene groups, aldehyde groups, and mixtures thereof.
• a substrate may have functional groups which couple to the functional groups of a nanofilm.
• the functional groups of the substrate may be surface groups or linking groups bound to the substrate, which may be formed by reactions which bind the surface groups or linking groups to the substrate.
• Surface groups may also be created on the substrate by a variety of treatments such as cold plasma treatment, surface etching methods, solid abrasion methods, or chemical treatments. Some methods of plasma treatment are given in Inagaki, Plasma Surface Modification and Plasma Polymerization, Technomic, Lancaster, Pennsylvania, 1996.
• the substrate is derivatized with APTES.
• the substrate is derivatized with methylacryloxymethyltrimethoxysilane (MAOMTMOS).
• MAOMTMOS methylacryloxymethyltrimethoxysilane
• AOPTMOS acryloxypropyltrimethoxy-silane
• Non-limiting examples of suitable functional groups for coupling the nanofilm to the substrate and the resulting linkages may be found in Tables 2 and 4.
• the functional groups on the nanofilm may be from any component of the nanofilm, for example, the macrocyclic modules, the polymer component, or the amphiphilic component.
• Surface attachment groups may be connected to a nanofilm by spacer groups.
• substrate functional groups may be connected to the substrate by spacer groups.
• Spacer groups for surface attachment groups may be polymeric. Examples of polymeric spacers include polyethylene oxides, polypropylene oxides, polysaccharides, polylysines, polypeptides, poly(amino acids), polyvinylpyrrolidones, polyesters, polyvinylchlorides, polyvinylidene fluorides, polyvinylalcohols, polyurethanes, polyamides, polyimides, polysulfones, polyethersulfones, polysulfonamides, and polysulfoxides.
• polymeric spacer structures include linear, branched, comb and dendrimeric polymers, random and block copolymers, homo- and heteropolymers, flexible and rigid chains.
• Spacer groups for surface attachment groups may also include bifunctional linker groups or heterobifunctional linker groups used to couple biomolecules and other chemical species.
• a photoreactive group such as a benzophenone is bound to the substrate.
• the photoreactive group may be activated with light, for example, ultraviolet light, to provide a reactive species which couples to a nanofilm.
• the photoreactive species may couple to any atom or group of atoms of the nanofilm.
• modules may also be achieved through ligand-receptor mediated interactions, such as biotin-streptavidin.
• the substrate may be coated with streptavidin, and biotin may be attached to the modules, for example, through linker groups such as PEG or alkyl groups.
• linker groups such as PEG or alkyl groups.
• the nanofilms described herein may be useful, for example, as membranes.
• the membrane may be brought into contact with a fluid or solution, separating a species or component from that fluid or solution, for example, for purposes of filtration.
• a membrane is a substance which acts as a barrier to block the passage of some species, while allowing restricted or regulated passage of other species.
• permeants may traverse the membrane if they are smaller than a cut-off size, or have a molecular weight smaller than a so-called cut-off molecular weight.
• the membrane may be called impermeable to species which are larger than the cut-off molecular weight.
• the cut-off size or molecular weight is a characteristic property of the membrane.
• Selective permeation is the ability of the membrane to cut-off, restrict, or regulate passage of some species, while allowing smaller species to pass.
• the selective permeation of a membrane may be described functionally in terms of the largest species able to pass the membrane under given conditions.
• the size or molecular weight of various species may also be dependent on the conditions in the fluid to be separated, which may determine the form of the species. For example, species may have a sphere of hydration or solvation in a fluid, and the size of the species in relation to membrane applications may or may not include the water of hydration or the solvent molecules.
• a membrane is permeable to a species of a fluid if the species can traverse the membrane in the form in which it normally would be found in the fluid.
• Permeation and permeability may be affected by interaction between the species of a fluid and the membrane itself. While various theories may describe these interactions, the empirical measurement of pass/no-pass information relating to a nanofilm, membrane, or module is a useful tool to describe permeation properties.
• a membrane is impermeable to a species if the species cannot pass through the membrane.
• Pores may be provided in the nanofilms described herein, for example, pores may be supplied in the structure of the nanofilm. Pores may be supplied in the structure of the macrocyclic modules. Pores may in some cases be supplied from the packing of the macrocyclic modules and the polymeric components. The type and degree of crosslinking between components may influence pore size.
• the nanofilms described herein comprising one or more polymeric components may advantageously have reduced numbers of micrometer-sized or macroscopic openings which affect use in filtration and selective permeation.
• the nanofilms may have molecular weight species cut offs of, for example, greater than about 15 kDa, greater than about 10 kDa, greater than about 5 kDa, greater that about 1 kDa, greater than about 800 Da, greater than about 600 Da, greater than about 400 Da, greater than about 200 Da, greater than about 100 Da, greater than about 50 Da, greater than about 20 Da, less than about 15 kDa, less than about 10 kDa, less than about 5 kDa, less that about 1 kDa, less than about 800 Da, less than about 600 Da, less than about
• 400 Da less than about 200 Da, less than about 100 Da, less than about 50 Da, less than about 20 Da, about 13 kDa, about 190 Da, about 100 Da, about 45 Da, about 20 Da.
• High permeability indicates a clearance of, for example, greater than about
• the passage or exclusion of a solute is measured by its clearance, which reflects the portion of solute that actually passes through the membrane. For example, the no pass symbol in Tables 16-17 indicates that the solute is partly excluded by the module, sometimes less than 90% rejection, often at least
• the pass symbol indicates that the solute is partly cleared by the module, sometimes less than 90% clearance, often at least 90% clearance, sometimes at least 98% clearance.
• Examples of processes in which nanofilms may be useful include processes involving liquid or gas as a continuous fluid phase, filtration, clarification, fractionation, pervaporation, reverse osmosis, dialysis, hemodialysis, affinity separation, oxygenation, and other processes.
• Filtration applications may include ion separation, desalinization, gas separation, small molecule separation, separation of enantiomers, ultrafiltration, microfiltration, hyperfiltration, water purification, sewage treatment, removal of toxins, removal of biological species such as bacteria, viruses, or fungus.
• the term “synthon” refers to a molecule used to make a macrocyclic module.
• a synthon may be substantially one isomeric configuration, for example, a single enantiomer.
• a synthon may be substituted with functional groups which are used to couple a synthon to another synthon or synthons, and which are part of the synthon.
• a synthon may be substituted with an atom or group of atoms which are used to impart hydrophilic, lipophilic, or amphiphilic character to the synthon or to species made from the synthon.
• the synthon before being substituted with functional groups or groups used to impart hydrophilic, lipophilic, or amphiphilic character may be called the core synthon.
• the term “synthon” refers to a core synthon, and also refers to a synthon substituted with functional groups or groups used to impart hydrophilic, lipophilic, or amphiphilic character.
• cyclic synthon refers to a synthon having one or more ring structures.
• ring structures include aryl, heteroaryl, and cyclic hydrocarbon structures including bicyclic ring structures and multicyclic ring structures.
• core cyclic synthons include, but are not limited to, benzene, cyclohexadiene, cyclopentadiene, naphthalene, anthracene, phenylene, phenanthracene, pyrene, triphenylene, phenanthrene, pyridine, pyrimidine, pyridazine, biphenyl, bipyridyl, cyclohexane, cyclohexene, decalin, piperidine, pyrrolidine, morpholine, piperazine, pyrazolidine, quinuclidine, tetrahydropyran, dioxane, tetrahydrothiophene, tetrahydrofuran, pyrrole, cyclopentane, cyclopentene, triptycene, adamantane, bicyclo[2.2.1]heptane, bicyclo[2.2.1]heptene, bicyclo
• a core synthon comprises all isomers or arrangements of coupling the core synthon to other synthons.
• the core synthon benzene includes synthons such as 1,2- and 1,3 -substituted benzenes, where the linkages between synthons are formed at the 1,2- and 1,3- positions of the benzene ring, respectively.
• the core synthon benzene includes 1,3-substituted synthons
• a condensed linkage between synthons involves a direct coupling between a ring atom of one cyclic synthon to a ring atom of another cyclic synthon, for example, where synthons M-X and M-X couple to form M-M, where M is a cyclic synthon and X is halogen; as for example when M is phenyl
• a macrocyclic module is a closed ring of coupled synthons.
• synthons may be substituted with functional groups to couple the synthons to form a macrocyclic module.
• Synthons may also be substituted with functional groups which will remain in the structure of the macrocyclic module.
• Functional groups which remain in the macrocyclic module may be used to couple the macrocyclic module to other macrocyclic modules or other components.
• a macrocyclic module may contain from three to about twenty-four cyclic synthons.
• a first cyclic synthon may be coupled to a second cyclic synthon
• the second cyclic synthon may be coupled to a third cyclic synthon
• the third cyclic synthon may be coupled to a fourth cyclic synthon, if four cyclic synthons are present in the macrocyclic module, the fourth to a fifth, and so on, until an n th cyclic synthon may be coupled to its predecessor, and the n 1 * 1 cyclic synthon may be coupled to the first cyclic synthon to form a closed ring of cyclic synthons.
• the closed ring of the macrocyclic module may be formed with a linker molecule.
• a macrocyclic module may be an amphiphilic macrocyclic module when hydrophilic and lipophilic functional groups exist in the structure. The amphiphilic character of a macrocyclic module may arise from atoms in the synthons, in the linkages between synthons, or in functional groups coupled to the synthons or linkages.
• one or more of the synthons of a macrocyclic module may be substituted with one or more lipophilic moieties, while one or more of the synthons may be substituted with one or more hydrophilic moieties, thereby forming an amphiphilic macrocyclic module.
• Lipophilic and hydrophilic moieties may be coupled to the same synthon or linkage in an amphiphilic macrocyclic module. Lipophilic and hydrophilic moieties may be coupled to the macrocyclic module before or after formation of the closed ring of the macrocyclic module. For example, lipophilic or hydrophilic moieties may be added to the macrocyclic module after formation of the closed ring by substitution of a synthon or linkage.
• the amphiphilicity of a macrocyclic module may be characterized in part by its ability to form a stable Langmuir film.
• a Langmuir film may be formed on a Langmuir trough at a particular surface pressure measured in milliNewtons per meter (mN/m) with a particular barrier speed measured in millimeters per minute (mm/min), and the isobaric creep or change in film area at constant surface pressure can be measured to characterize stability of the film.
• mN/m milliNewtons per meter
• mm/min millimeters per minute
• a stable Langmuir film of macrocyclic modules on a water subphase may have an isobaric creep at 5-15 mN/m such that the majority of the film area is retained over a period of time of about one hour.
• Examples of stable Langmuir films of macrocyclic modules on a water subphase may have isobaric creep at 5-15 mN/m such that about 70% of the film area is retained over a period of time of about 30 minutes, sometimes about 70% of the film area is retained over a period of time of about 40 minutes, sometimes about 70% of the film area is retained over a period of time of about 60 minutes, and sometimes about 70% of the film area is retained over a period of time of about 120 minutes.
• stable Langmuir films of macrocyclic modules on a water subphase may have isobaric creep at 5-15 mN/m such that about 80% of the film area is retained over a period of time of about thirty minutes, sometimes about 85% of the film area is retained over a period of time of about thirty minutes, sometimes about 90% of the film area is retained over a period of time of about thirty minutes, sometimes about 95% of the film area is retained over a period of time of about thirty minutes, and sometimes about 98% of the film area is retained over a period of time of about thirty minutes.
• an individual macrocyclic module may include a pore in its structure.
• Each macrocyclic module may define a pore of a particular size, depending on the conformation and state of the module.
• Various macrocyclic modules may be prepared which define pores of different sizes.
• a macrocyclic module may have flexibility in its structure. Flexibility may permit a macrocyclic module to more easily form linkages with other macrocyclic modules and/or other components by coupling reactions. Flexibility of a macrocyclic module may also play a role in regulating passage of species through the pore of the macrocyclic module. For example, flexibility may affect the dimension of the pore of an individual macrocyclic module since various conformations may be available to the structure. For example, the macrocyclic module may have a certain pore dimension in one conformation when no substituents are located at the pore, and the same macrocyclic module may have a different pore dimension in another conformation when one or more substituents of that macrocycle are located at the pore.
• a macrocyclic module may have a certain pore dimension in one conformation when one group of substituents are located at the pore, and have a different pore dimension in a different conformation when a different group of substituents are located at the pore.
• the "one group" of substituents located at the pore may be three alkoxy groups arranged in one regioisomer, while the “different group” of substituents may be two alkoxy groups arranged in another regioisomer.
• the effect of the "one group” of substituents located at the pore and the "different group” of substituents located at the pore is to provide a macrocyclic module composition which may regulate transport and filtration, in conjunction with other regulating factors.
• the synthons may be used as a substantially pure single isomer, for example, as a pure single enantiomer.
• one or more coupling linkages are formed between adjacent synthons.
• the linkage formed between synthons may be the product of the coupling of one functional group on one synthon to a complementary functional group on a second synthon.
• a hydroxyl group of a first synthon may couple with an acid group or acid halide group of a second synthon to form an ester linkage between the two synthons.
• Examples of suitable complementary functional groups and linkages between synthons are shown in Table 2, wherein "synthon" may substitute for "module”.
• the functional groups of synthons used to form linkages between synthons or other macrocyclic modules may be separated from the synthon by a spacer.
• a spacer can be any atom or group of atoms which couples the functional group to the synthon, and does not interfere with the linkage-forming reaction.
• a spacer is part of the functional group, and becomes part of the linkage between synthons.
• spacer is a methylene group, -CH 2 -.
• a linkage between synthons may also contain one or more atoms provided by an external moiety other than the two functional groups of the synthons.
• An external moiety may be a linker molecule which may couple with the functional group of one synthon to form an intermediate which couples with a functional group on another synthon to form a linkage between the synthons, such as, for example, to form a closed ring of synthons from a series of coupled synthons.
• An example of a linker molecule is formaldehyde.
• amino groups on two synthons may undergo Mannich reaction in the presence of formaldehyde as the linker molecule to produce the linkage -NHCH 2 NH-. Examples of suitable functional groups and linker molecules are shown in Table 4, wherein "synthon" may substitute for "module.”
• a macrocyclic module may include functional groups for coupling the macrocyclic module to a solid surface, substrate, or support.
• functional groups of macrocyclic modules which can be used to couple to a substrate or surface include amine, carboxylic acid, carboxylic ester, benzophenone and other light activated crosslinkers, alcohol, glycol, vinyl, styryl, olefin styryl, epoxide, thiol, magnesium halo or Grignard, acrylate, acrylamide, diene, aldehyde, and mixtures thereof.
• These functional groups may be coupled to the closed ring of the macrocyclic module, and may optionally be attached by a spacer group.
• solid surfaces include metal surfaces, ceramic surfaces, polymer surfaces, semiconductor surfaces, silicon wafer surfaces, alumina surfaces, and so on.
• functional groups of macrocyclic modules which can be used to couple to a substrate or surface further include those described in the left hand column of Tables 2-4. Methods of initiating coupling of the modules to the substrate include chemical, thermal, photochemical, electrochemical, and irradiative methods.
• spacer groups include polyethylene oxides, polypropylene oxides, polysaccharides, polylysines, polypeptides, poly(amino acids), polyvinylpyrrolidones, polyesters, polyvinylchlorides, polyvinylidene fluorides, polyvinylalcohols, polyurethanes, polyamides, polyimides, polysulfones, polyethersulfones, polysulfonamides, and polysulfoxides.
• the macrocyclic module composition comprises: from three to about twenty-four cyclic synthons coupled to form a closed ring; at least two functional groups for coupling the closed ring to complementary functional groups on at least two other closed rings; wherein each functional group and each complementary functional group comprises a functional group containing atoms selected from the group consisting of C, H, N, O, Si, P, S, B, Al, halogens, and metals from the alkali and alkaline earth groups.
• the composition may comprise at least two closed rings coupled through said functional groups.
• the composition may comprise at least three closed rings coupled through said functional groups.
• the macrocyclic module composition comprises: from three to about twenty-four cyclic synthons coupled to form a closed ring defining a pore; the closed ring having a first pore dimension in a first conformation when a first group of substituents is located at the pore and a second pore dimension in a second conformation when a second group of substituents is located at the pore; wherein each substituent of each group comprises a functional group containing atoms selected from the group consisting of C, H, N, O, Si, P, S, B, Al, halogens, and metals from the alkali and alkaline earth groups.
• the macrocyclic module composition comprises: (a) from three to about twenty-four cyclic synthons coupled to form a closed ring defining a pore; (b) at least one functional group coupled to the closed ring at the pore and selected to transport a selected species through the pore, wherein the at least one functional group comprises a functional group containing atoms selected from the group consisting of C, H, N, O, Si, P, S, B, Al, halogens, and metals from the alkali and alkaline earth groups; (c) a selected species to be transported through the pore.
• the selected species may, in one example, be selected from the group of ovalbumin, glucose, creatinine, H 2 PO 4 " , HPO 4 "2 , HCO 3 " , urea, Na + , Li + , and K + .
• the cyclic synthons are each independently selected from the group consisting of benzene, cyclohexadiene, cyclohexene, cyclohexane, cyclopentadiene, cyclopentene, cyclopentane, cycloheptane, cycloheptene, cycloheptadiene, cycloheptatriene, cyclooctane, cyclooctene, cyclooctadiene, cyclooctatriene, cyclooctatetraene, naphthalene, anthracene, phenylene, phenanthracene, pyrene, triphenylene, phenanthrene, pyridine, pyrimidine, pyridazine, biphenyl, bipyridyl, decalin, piperidine, pyrrolidine, morpholine, piperazine, pyrazol
• a macrocyclic module may be a closed ring composition of the formula:
• the closed ring comprises a total of from three to twenty-four synthons Q; J is 2- 23;
• Q 1 are synthons each independently selected from the group consisting of (a) aryl synthons, (b) heteroaryl synthons, (c) saturated cyclic hydrocarbon synthons, (d) unsaturated cyclic hydrocarbon synthons, (e) saturated bicyclic hydrocarbon synthons, (f) unsaturated bicyclic hydrocarbon synthons, (g) saturated multicyclic hydrocarbon synthons, and (h) unsaturated multicyclic hydrocarbon synthons; wherein ring positions of each Q 1 which are not coupled to a linkage L are independently substituted with hydrogen or a functional group containing atoms selected from the group of C, H, N, O, Si, P, S, B, Al, halogens, and metals from the alkali and alkaline earth groups; Q 2 is a synthon independently selected from the group consisting of (a) aryl synthons, (b) hetero
• Synthons Q 1 when independently selected, may be any cyclic synthon as described, so that the J synthons Q 1 may be found in the closed ring in any order, for example, cyclohexyl- 1 ,2-phenyl ⁇ piperidinyl ⁇ 1,2 -phenyl-- 1,2-phenyl- cyclohexyl, and so on, and the J linkages L may also be independently selected and configured in the closed ring.
• the macrocyclic modules represented and encompassed by the formula include all stereoisomers of the synthons involved, so that a wide variety of stereoisomers of the macrocyclic module are included for each closed ring composition of synthons.
• the macrocyclic module may comprise a closed ring composition of the formula:
• J is 2-23;
• Q 1 are synthons each independently selected from the group consisting of (a) phenyl synthons coupled to linkages L at 1,2-phenyl positions, (b) phenyl synthons coupled to linkages L at 1,3-phenyl positions, (c) aryl synthons other than phenyl synthons, (d) heteroaryl synthons other than pyridinium synthons, (e) saturated cyclic hydrocarbon synthons, (f) unsaturated cyclic hydrocarbon synthons, (g) saturated bicyclic hydrocarbon synthons, (h) unsaturated bicyclic hydrocarbon synthons, (i) saturated multicyclic hydrocarbon synthons, and (j) unsaturated multicyclic hydrocarbon synthons; wherein ring positions of each Q 1 which are not coupled to a linkage L are independently substituted with hydrogen or a functional group containing atoms selected from the group of C, H, N, O, Si, P, S, B, Al, halogen
• the macrocyclic module may comprise a closed ring composition of the formula:
• J is 2-23;
• Q 1 are synthons each independently selected from the group consisting of (a) phenyl synthons coupled to linkages L at 1 ,2 -phenyl positions, (b) phenyl synthons coupled to linkages L at 1,3-phenyl positions, and (c) cyclohexane synthons coupled to linkages L at 1,2-cyclohexyl positions; wherein ring positions of each Q 1 which are not coupled to a linkage L are independently substituted with hydrogen or a functional group containing atoms selected from the group of C, H, N, O, Si, P, S, B, Al, halogens, and metals from the alkali and alkaline earth groups;
• Q 2 is a cyclohexane synthon coupled to linkages L at 1,2-cyclohexyl positions; wherein ring positions of Q which are not coupled to an L are independently substituted with hydrogen or a functional group containing atoms selected from the group consisting of C, H,
• R and R' are each independently selected from the group of hydrogen and alkyl; wherein linkages L are each independently configured in either of two possible configurations, forward and reverse, with respect to the synthons it couples together, if the two configurations are different structures; wherein y is 1 or 2, and Q y are each independently one of the Q or Q synthons connected by the linkage.
• the macrocyclic module comprises a closed ring composition of the formula:
• J is 2-23;
• Q 1 are synthons each independently selected from the group consisting of (a) phenyl synthons coupled to linkages L at 1,4-phenyl positions, (b) aryl synthons other than phenyl synthons, (c) heteroaryl synthons, (d) saturated cyclic hydrocarbon synthons, (e) unsaturated cyclic hydrocarbon synthons, (f) saturated bicyclic hydrocarbon synthons, (g) unsaturated bicyclic hydrocarbon synthons, (h) saturated multicyclic hydrocarbon synthons, and (i) unsaturated multicyclic hydrocarbon synthons; wherein at least one of Q 1 is a phenyl synthon coupled to linkages L at 1,4-phenyl positions, and wherein ring positions of each Q 1 which are not coupled to a linkage L are independently substituted with hydrogen or a functional group containing atoms selected from the group of C, H, N, O, Si, P, S, B, Al, halogens
• G is halogen , , , and wherein p is 1-6;
• R and R' are each independently selected from the group of hydrogen and alkyl; wherein linkages L are each independently configured in either of two possible configurations, forward and reverse, with respect to the synthons it couples together, if the two configurations are different structures; wherein y is 1 or 2, and Q y are each independently one of the Q 1 or Q 2 synthons connected by the linkage.
• R are each independently selected from the group consisting of hydrogen and 1-
• X is selected from the group consisting of Cl, Br, and I; r is 1-50; and s is 1-4.
• the macrocylic module may comprise a closed ring composition of the formula:
• J is from 1-22, and n is from 1-24;
• X and R n are each independently selected from the group consisting of hydrogen or a functional group containing atoms selected from the group consisting of C, H, N, O, Si, P, S, B, Al, halogens, and metals from the alkali and alkaline earth groups;
• Z are each independently hydrogen or a lipophilic group;
• L are linkages between synthons each independently selected from the group consisting of (a) a condensed linkage, and (b) a linkage selected from the group consisting of -N-CR-, -NRC(O)-, -OC(O)-, -O-, -S-S-, -S-, -NR-, -(CRR') p -, -CH 2 NH-, -C(O)S-, -C(O)O-, -C ⁇ C-, -C ⁇ C-C ⁇ C-, -CH(
• linkages L are each independently configured in either of two possible configurations, forward and reverse, with respect to the synthons it couples together, if the two configurations are different structures.
• the macrocyclic module may comprise a closed ring composition of the formula: wherein:
• J is from 1-22, and n is from 1-48;
• X and R n are each independently selected from the group consisting of functional groups containing atoms selected from the group consisting of C, H, N, O, Si, P, S, B, Al, halogens, and metals from the alkali and alkaline earth groups;
• Z are each independently hydrogen or a lipophilic group;
• L are linkages between the synthons each independently selected from the group consisting of (a) a condensed linkage, and (b) a linkage selected from the group consisting of -NRC(O)-, -OC(O)-, -O-, -S-S-, -S-, -NR-, -(CRR')p-, -CH 2 NH-, -C(O)S-, -C(O)O-, -C ⁇ C-, -C ⁇ C-C ⁇ C-, -CH(OH)-, -HC-CH-,
• p is 1-6; wherein R and R' are each independently selected from the group of hydrogen and alkyl; wherein linkages L are each independently configured in either of two possible configurations, forward and reverse, with respect to the synthons it couples together, if the two configurations are different structures.
• X and R n are each independently selected from the group consisting of hydrogen, an activated acid, -OH, -C(O)OH, -C(O)H, -C(O)OCH 3 , -C(O)Cl, -NRR, -NRRR + , -MgX, -Li, -OLi, -OK, -ONa, -SH,
• R are each independently selected from the group consisting of hydrogen and
• X is selected from the group consisting of Cl, Br, and I; r is 1-50; and s is 1-4.
• the macrocyclic module comprises the formula:
• J is from 1-11, and n is from 1-12;
• R are each independently selected from the group consisting of hydrogen and 1-6C alkyl;
• X is selected from the group consisting of Cl, Br, and I;
• r is 1-50; and
• s is 1-4;
• Z are each independently hydrogen or a lipophilic group;
• L are linkages between synthons each independently selected from the group consisting of (a) a condensed linkage, and (b) a linkage selected from the group consisting of -NRC(O)-, -OC(O)-, -O-, -S-S-, -S-, -NR-, -(CRR') P -,
• the macrocyclic module has the formula:
• Q is , J is from 1-11, and n is from 1-12;
• R are each independently selected from the group consisting of hydrogen and 1-6C alkyl;
• X is selected from the group consisting of Cl, Br, and I;
• r is 1-50; and
• s is 1-4;
• Z are each independently hydrogen or a lipophilic group;
• L are linkages between the synthons each independently selected from the group consisting of (a) a condensed linkage, and (b) a linkage selected from the group consisting of -NRC(O)-, -OC(O)-, -O-, -S-S-, -S-, -NR-, -(CRR'
• the macrocyclic module comprises the formula: wherein:
• Q is , J is from 1-11, and n is from 1-12;
• X is -NX 1 - or
• X 2 and X 3 are each independently selected from the group consisting of hydrogen, -OH, -NH 2 , -SH, -(CH 2 ) t OH, -(CH 2 ) t NH 2 and -(CH )tSH, wherein t is 1-4, and X 2 and X 3 are not both hydrogen;
• R n are each independently selected from the group consisting of hydrogen, an activated acid, -OH, -C(O)OH, -C(O)H, -C(O)OCH 3 , -C(O)Cl, -NRR, -NRRR + , -MgX, -Li, -OLi, -OK, -ONa, -SH, -C(O)Cl
• R are each independently selected from the group consisting of hydrogen and 1-6C alkyl;
• X is selected from the group consisting of Cl, Br, and I;
• r is 1-50; and
• s is 1-4;
• Z are each independently hydrogen or a lipophilic group;
• L are linkages between synthons each independently selected from the group consisting of (a) a condensed linkage, and (b) a linkage selected from the group consisting of -NRC(O)-, -OC(O)-, -O-, -S-S-, -S-, -NR-, -(CRR')p-, -CH 2 NH-, -C(O)S-, -C(O)O-
• the macrocyclic module has the formula:
• J is from 1-11, and n is from 1-12;
• R are each independently selected from the group consisting of hydrogen and 1-6C alkyl;
• X is selected from the group consisting of Cl, Br, and I;
• r is 1-50; and
• s is 1-4;
• Z and Y are each independently hydrogen or a lipophilic group;
• L are linkages between the synthons each independently selected from the group consisting of (a) a condensed linkage, and (b) a linkage selected from the group consisting of -NRC(O)-, -OC(O)-, -O-, -S-S-, -S-, -NR-, -(CRR')p-, -CH 2 NH-, -C(O)S-,
• the macrocyclic module has the formula:
• J is from 1-11, and n is from 1-12;
• R are each independently selected from the group consisting of hydrogen and 1-6C alkyl;
• X is selected from the group consisting of Cl, Br, and I;
• r is 1-50; and
• s is 1-4;
• Z and Y are each independently hydrogen or a lipophilic group;
• L are linkages between synthons each independently selected from the group consisting of (a) a condensed linkage, and (b) a linkage selected from the group consisting of -NRC(O)-, -OC(O)-, -O-, -S-S-, -S-, -NR-, -(CRR')p
• the nanofilm may be coupled to a solid support selected from the group of Wang resins, hydrogels, aluminas, metals, ceramics, polymers, silica gels, sepharose, sephadex, agarose, inorganic solids, semiconductors, and silicon wafers.
• the nanofilm retains at least 85% of film area after thirty minutes on a Langmuir trough at 5-15 mN/m. In other embodiments, the nanofilm retains at least 95% of film area after thirty minutes on a Langmuir trough at 5-15 mN/m. In another embodiment, the nanofilm retains at least 98% of film area after thirty minutes on a
• a method for making a macrocyclic module composition comprises: (a) providing a plurality of a first cyclic synthon; (b) contacting a plurality of a second cyclic synthon with the first cyclic synthons; (c) isolating the macrocyclic module composition.
• the method may further comprise contacting a linker molecule with the mixture in (a) or (b).
• a method for making a macrocyclic module composition comprises: (a) providing a plurality of a first cyclic synthon; (b) contacting a plurality of a second cyclic synthon with the first cyclic synthons; (c) contacting a plurality of the first cyclic synthon with the mixture from (b).
• a method for making a macrocyclic module composition comprises: (a) providing a plurality of a first cyclic synthon; (b) contacting a plurality of a second cyclic synthon with the first cyclic synthons; (c) contacting a plurality of a third cyclic synthon with the mixture from (b).
• the method may further comprise contacting a linker molecule with the mixture in (a) or (b) or (c).
• the method may further comprise supporting a cyclic synthon or coupled synthons on a solid phase.
• a method for making a macrocyclic module composition comprises: (a) contacting a plurality of cyclic synthons with a metal complex template; and (b) isolating the macrocyclic module composition.
• a method of preparing a composition for transporting a selected species through the composition comprises: selecting a first cyclic synthon, wherein the first cyclic synthon is substituted with at least one functional group comprising a functional group containing atoms selected from the group consisting of C, H, N, O, Si,
• An individual macrocyclic module may include a pore in its structure.
• the size of the pore may determine the size of molecules or other species which can pass through the macrocyclic module.
• the size of a pore in a macrocyclic module may depend on the structure of the synthons used to make the macrocyclic module, the linkages between synthons, the number of synthons in a module, the structure of any linker molecules used to make the macrocyclic module, and other structural features of the macrocyclic module whether inherent in the preparation of the macrocyclic module or added in later steps or modifications.
• Stereoisomerism of macrocyclic modules may also be used to regulate the size of a pore of a macrocyclic module by variation of the stereoisomer of each synthon used to prepare the closed ring of the macrocyclic module.
• the dimension of a pore in a macrocyclic module may be varied by changing the combination of synthons used to form the macrocyclic module, or by varying the number of synthons in the closed ring.
• the dimension of a pore may also be varied by substituents on the synthons or linkages. The pore may therefore be made large enough or small enough to achieve an effect on transport of species through the pore.
• Species which may be transported through the pore of a macrocyclic module include atoms, molecules, biomolecules, ions, charged particles, and photons.
• the size of a species may not be the sole determinant of whether it will be able to pass through a pore of a macrocyclic module.
• Groups or moieties located in or near the pore structure of a macrocyclic module may regulate or affect transport of a species through the pore by various mechanisms.
• transport of a species through the pore may be affected by groups of the macrocyclic module which interact with the species, by ionic or other interaction, such as chelating groups, or by complexing the species.
• a charged group such as a carboxylate anion or ammonium group may couple an oppositely-charged species and affect its transport.
• Substituents of synthons in a macrocyclic module may affect the passage of a species through the pore of the macrocyclic module.
• Groups of atoms which render the pore of a macrocyclic module more or less hydrophilic or lipophilic may affect transport of a species through the pore.
• An atom or group of atoms may be located within or proximate to a pore to sterically slow or block the passage of a species through the pore.
• hydroxyl or alkoxy groups may be coupled to a cyclic synthon and located in the pore of the structure of the macrocyclic module, or may be coupled to a linkage between synthons and located in the pore.
• a wide range of functional groups may be used to sterically slow or block the passage of a species through the pore, including functional groups containing atoms selected from the group consisting of C, H, N, O, Si, P, S, B, Al, halogens, and metals from the alkali and alkaline earth groups.
• Blocking and slowing passage of a species through the pore may involve reducing the dimension of the pore by steric blocking, as well as slowing the passage of species by creating a path through the pore which is not linear, and providing interaction between the functional group and the species to slow transport.
• the stereochemical structure of the portion of the macrocyclic module which defines the pore and its interior may also affect transport.
• Any groups or moieties which affect transport of a species through the pore of a macrocyclic module may be introduced as part of the synthons used to prepare the macrocyclic module, or may be added later by various means.
• S7-1 could be reacted with ClC(O)(CH 2 ) 2 C(O)OCH 2 CH 3 to convert the phenol groups to succinyl ester groups.
• molecular dynamical motion of the synthons and linkages of a partly flexible macrocyclic module may affect transport of a species through the pore of the module.
• Transport behavior may not be described solely by the structure of the macrocyclic module itself since the presence of the species which is to be transported through the pore affects the flexibility, conformation, and dynamical motions of a macrocyclic module.
• solvent may also affect transport of solutes through a pore.
• Reagents were obtained from Aldrich Chemical Company and VWR Scientific Products.
• the Langmuir trough used was a KSV minitrough (KSV Instruments, Trumbull, CT).
• Interfacial rheometry was performed using a OR- 100 Interfacial Rheometer (Rheometric Scientific, Piscataway NJ) with a KSV Langmuir two-barrier rheology microtrough having a width of 85 mm (KSV Instruments, Trumbull, CT). Rates of surface compression are reported as the linear rate of barrier movement.
• Atomic force microscopy (AFM) images were obtained with a PicoSPM (Molecular Imaging, Pheonix AZ). Contact Mode images were typically recorded under flowing nitrogen with an Si point probe tip.
• Imaging ellipsometry revealed an APTES coating on the substrate having a thickness of 0.94 nm.
• the thickness of the uncured nanofilm itself was 1.1 nm.
• a smooth, physically homogeneous, continuous and unbroken nanofilm was deposited. After heating, the thickness of the coating and cured nanofilm was 1.57 nm, illustrated on the left in Fig. 1C, while the APTES coating of the substrate, illustrated on the right in Fig.
• a nanofilm thickness of 1.1 nm was measured by ellipsometry before curing the nanofilm, and 0.9-1.0 nm after curing.
• a smooth, physically homogeneous, continuous and unbroken nanofilm was deposited.
• a nanofilm thickness of 0.7-0.9 nm was measured by ellipsometry.
• G" typically exceeds G' in the viscous nanofilm.
• the data in Table 10 indicate that for a nanofilm of Hexamer ldh and DEM, introducing an area fraction of polymeric component PMAOD of about 5% into the nanofilm reduced the moduli of the nanofilm by more than 50%.
• the polymeric component makes the nanofilm more flexible and less brittle.
• the data in Table 10 indicate that for a nanofilm having an area fraction of polymeric component PMAOD of about 5%, the surface loss modulus of the nanofilm at a surface pressure from 5-30 mN/m is less than about 50% of the surface loss modulus of the same nanofilm composition made without the polymeric components.
• Fig. 3A Surface rheology of a sample of nanofilm of Hexamer 1 dh and DEM having polymeric component PMAOD is shown in Fig. 3A. Nanofilms used in Fig. 3A were prepared with a 2.0 mg/ml DEM subphase. The dashed line curves in Fig. 3A were obtained with a subphase heated to 33°C, while the solid line curves were obtained with a subphase at room temperature 22°C.
• the data in Fig. 3A indicate that for a nanofilm of Hexamer ldh and DEM, introducing an area fraction of PMAOD of about 20% into the nanofilm reduced the loss modulus (G") of the nanofilm by about one-half at 10 mN/m surface pressure.
• the data in Fig. 3 A also indicate that the modulus of the nanofilm is generally higher for the higher subphase temperature.
• FIG. 3B-D Surface rheology of a sample of nanofilm of Hexamer 1 dh and DEM having polymeric component PMAOD is shown in Figs. 3B-D.
• Nanofilms used in Figs. 3B-D were prepared with a 2.0 mg/ml DEM subphase at room temperature.
• the data in Figs. 3B-D indicate that for a nanofilm of Hexamer ldh and DEM, introducing an area fraction of polymeric component PMAOD of about 5% into the nanofilm reduced the storage and loss moduli of the nanofilm by more than one-half at 20 mN/m surface pressure or greater.
• Hexamer ldh, PMAOD and DEM on polycarbonate track etch membrane PCTE: A nanofilm of Hexamer ldh, PMAOD, and DEM can be made to span the pores of a 0.01 ⁇ m PCTE.
• a solution of Hexamer ldh and PMAOD having 0.1 mole fraction hexamer: 0.9 mole fraction PMAOD was spread onto a subphase of 0.5 mg/ml DEM.
• One layer of the resulting nanofilm was deposited by vertical dip at 2 mm/min at a surface pressure of 12 mN/m and deposition rate 1 mm/min onto a PCTE having holes of 10 nm diameter. The sample was not heated.
• the PCTE substrates were not plasma treated, and the attachment of the nanofilm to the PCTE was not necessarily by covalent binding, but may have been by weaker types of binding or coupling.
• Fig. 4A shows an area in the center of the nanofilm in which no holes in the nanofilm were visible.
• Fig. 4B shows an area far from the edge of the nanofilm in which no holes in the nanofilm were visible.
• Fig. 4C shows an area next to that in Fig. 4D which was near the edge of the nanofilm and in which a few holes of various sizes may have been visible in the nanofilm.
• Fig. 4D is shown an area near the edge of the nanofilm in which a few holes of various sizes may have been visible in the nanofilm.
• the holes observed in the nanofilm in Figs. 4A-4D may have been as large as 30 nm in diameter.
• Fig. 5 A the scanning electron micrograph of a PCTE substrate having holes of 10 nm diameter
• Fig. 5B The scanning electron micrograph of the same PCTE substrate after plasma treatment is shown in Fig. 5B, which illustrates that the holes may be widened as compared to the PCTE substrate used in Fig. 5A.
• the ratio of the areas of the peak appearing at 1450 cm '1 to the peak at 1737 cm "1 was about 3:1.
• the ratio for the same peaks observed in Fig. 8 was less than one, and indicated ester or amide formation because of the increase in absorbance in the carbonyl region. This indicated coupling of the module via the phenol and secondary amine groups to the PMAOD polymer.
• Fig. 10 The FTIR-ATR spectrum of CHC1 3 rinsings from a nanofilm made from Hexamer ldh and PMAOD deposited on a SiO 2 substrate from a pH 9 DEM subphase is shown in Fig. 10.
• the carbonyl region resembles that in Fig. 8, which would be expected as the DEM can react with the amine functionality of the hexamer to form amide crosslinks.
• ester formation is possible between PMAOD and the hexamer. This indicated coupling between the module and the polymer, and between the module and the cross-linker.
• a nanofilm of 0.8:0.2 mole fraction Hexamer 1 dh: PMAOD which were pre- mixed in solution was prepared, and deposited by vertical dip onto APTES coated Si ⁇ 2 substrate.
• the nanofilm was cured at 70°C under N2 for 15 hours.
• the Contact Mode AFM images of the nanofilm obtained under flowing N2 are shown in Fig. 12 A. Referring to Fig. 12 A, the top panels show the images of a continuous nanofilm, while the bottom panels show the images of the same nanofilm after a piece of the nanofilm about 250 nm 2 in area was removed by scraping with the AFM tip. The thickness of the film observed at the edge of the hole created by the tip was 2-3 nm.
• a second nanofilm of the same composition was cured at 70°C under N 2 for 39 hours.
• the Contact Mode AFM images of the second nanofilm obtained under flowing N2 are shown in Fig. 12B.
• the top panels show the images of a continuous nanofilm, while the bottom panels show the images of the same nanofilm after an attempt to scrape away a piece of the nanofilm with the AFM tip.
• the nanofilm could not be scraped away, showing that the longer-cured nanofilm was more strongly attached to the substrate by annealing.
• the Contact Mode AFM image of a nanofilm made from Hexamer ldh and PMAOD and DEM, having 0.10 mole fraction of Hexamer ldh:0.90 mole fraction PMAOD is shown in Fig. 13.
• the nanofilm was deposited by vertical dip onto PCTE having a random array of holes 0.01 ⁇ m in diameter. A depression in the nanofilm made with the AFM tip is clearly visible.
• a nanofilm was made from an amphiphile, octadecylamine (ODA), and an amphiphilic polymer, polymethylmethacrylate (PMMA) (Polysciences, Warrington PA, MW 100,000, polydispersity 1.1), from a chloroform solution of the two components heated to 55°C for 18 hours, then spread at the liquid-air interface of a 100 mM NaH PO 4 buffer (pH 7.3) at room temperature.
• Isotherms of this nanofilm and its components made with a 1 :1 mixture of ODA:PMMA, illustrated in Fig. 14, showed that the isotherms of ODA and PMMA each retained substantially the same shape in the nanofilm.
• the isotherms of Fig. 14 indicate that ODA and PMMA were immiscible in the nanofilm.
• a nanofilm was made from an amphiphile, ODA, and an amphiphilic polymer, PMAOD, by spreading a 1 :1 molar ratio of ODA:PMAOD in chloroform at the liquid-air interface.
• the isotherm of this nanofilm, illustrated in Fig. 15, exhibited a different shape than either of the components alone, and a much higher mean molecular area than either of the components alone.
• the isotherm of Fig. 15 indicates that ODA and PMAOD were miscible in the nanofilm.
• a solution of Hexamer ldh and PMMA was spread at the liquid-air interface over a water subphase to form a nanofilm having 0.6 area fraction Hexamer ldh.
• One layer of the resulting nanofilm was deposited by vertical dip at a surface pressure of 20 mN/m onto an APTES coated silicon substrate.
• the Contact Mode AFM image of the deposited nanofilm is shown in Fig. 16 and illustrates a phase separated nanofilm composition, which confirms that the Hexamer ldh / PMMA mixture is immiscible.
• the height of the continuous phase was about 1 nm above the discontinuous phase.
• a solution of Hexamer ldh and PMAOD was spread at the liquid-air interface over a water subphase containing 2 mg/ml DEM to form a nanofilm.
• Surface rheology of this nanofilm is shown in Fig. 17. Referring to Fig. 17, storage and loss surface moduli of the nanofilm are illustrated over time as the temperature of the subphase was raised. T bath indicates the temperature of the surrounding circulation bath, and T°C indicates the temperature of the subphase.
• Table 11 Rheology of nanofilm of Hexamer ldh and DEM having polymeric component PHEMA 10 mN/m 20 mN/m 30 mN/m mol fraction Hexamer ldh G' G" G * G" G' G" 0 0.07* 14* - - - 0.5 32 649 138 1233 291 1660 0.75 5.8 172 64 660 172 1206 100 13.3 257 147 1297 419 2707
• Example 20 Rheological characterization of polyglycidyl methacrylate (PGM) monolayers on a subphase containing 1% (by volume) ethylene diamine was performed according to the following protocol. 10 ⁇ l of a chloroform solution of PGM (1 mg/mL) was spread at the liquid-air interface of a 1% ethylene diamine subphase. After allowing 15 minutes for evaporation of the spreading solvent, the film was compressed to a surface pressure of 10 mN/m. The viscoelastic properties of the film were then measured at 30°C using the CIR- 100 interfacial rheometer (Camtel LTD, Herts, UK).
• one method to approximate pore size of a macrocyclic module is quantum mechanical (QM) and molecular mechanical (MM) computations.
• QM quantum mechanical
• MM molecular mechanical
• the root mean square deviations in the pore areas were computed over dynamic runs.
• each module was first optimized using the MM+ force field approach of Allinger (JACS, 1977, 99:8127) and Burkert, et al., (Molecular Mechanics, ACS Monograph 177, 1982).
• Table 12 Pore areas for various macrocyclic modules (A 2 )
• Table 13 Pore areas for various macrocyclic modules (A 2 )
• FIG. 19 A An example of the energy-minimized conformations of some hexamer macrocyclic modules having groups of substituents are shown in Figures 19A and 19B.
• a Hexamer l-h-(OH) 3 is shown having a group of -OH substituents.
• Fig. 19B a Hexamer l-h-(OEt) 3 is shown having a group of -OEt substituents.
• This macrocyclic module results in a composition which may be used to regulate pores. Selection of ethoxy synthon substituents over hydroxy synthon substituents for this hexamer composition is a method which may be used for transporting selected species.
• the pore size of macrocyclic modules was determined experimentally using a voltage-clamped bilayer procedure.
• a quantity of a macrocyclic module was inserted into a lipid bilayer formed by phosphatidylcholine and phosphatidylethanolamine.
• On one side of the bilayer was placed a solution containing the cationic species to be tested.
• On the other side was a solution containing a reference cationic species known to be able to pass through the pore of the macrocyclic module.
• Anions required for charge balance were selected which could not pass through the pores of the macrocyclic module.
• CH 3 NH 3 + having a radius of 2.0 A, passed through the pore while CH 3 CH 2 NH 3 + , with a radius of 2.6 A, did not.
• the observed ability of hydrated ions to pass through the pore may be due to partial dehydration of the species to enter the pore, transport of water molecules and ions through the pore separately or with reduced interaction during transport, and re-coordination of water molecules and ions after transport.
• the details of pore structure, composition, and chemistry, the flexibility of the macrocyclic module, and other interactions may affect the transport process.
• Table 15 Voltage-clamped bilayer test for macrocyclic module pore size
• Example 24 The filtration function of a membrane may be described in terms of its solute rejection profile. The filtration function of some nanofilm membranes is exemplified in Tables 16-17.
• the passage or exclusion of a solute is measured by its clearance, which reflects the portion of solute that actually passes through the membrane.
• the no pass symbol in Tables 16-17 indicates that the solute is partly excluded by the nanofilm, sometimes less than 90% rejection, often at least 90% rejection, sometimes at least 98% rejection.
• the pass symbol indicates that the solute is partly cleared by the nanofilm, sometimes less than 90% clearance, often at least 90% clearance, sometimes at least 98% clearance.
• Example 25 Selective filtration and relative clearance of solutes is exemplified in Table 18.
• the heading "high permeability” indicates a clearance of greater than about 70- 90% of the solute.
• the heading “medium permeability” indicates a clearance of less than about 50-70% of the solute.
• the heading “low permeability” indicates a clearance of less than about 10-30% of the solute.
• Table 18 Clearance of solutes by nanofilms
• Example 26 [0309] The approximate diameter of various species to be considered in a filtration process are illustrated in Table 19:
• SCHEME 1 symmetrical diester Sl-1 is used to give enantiomerically pure Sl-2.
• Sl-2 is subjected to the Curtius reaction and then quenched with benzyl alcohol to give protected amino acid Sl-3.
• Iodolactonization of carboxylic acid Sl-4 followed by dehydrohalogenation gives unsaturated lactone Sl-6.
• Opening of the lactone ring with sodium methoxide gives alcohol Sl-7, which is converted with inversion of configuration to Sl-8 in a one-pot reaction involving mesylation, SN 2 displacement with azide, reduction and protection of the resulting amine with di-tert-butyl dicarbonate.
• Sl-10 is subjected to the Curtius reaction.
• a mixed anhydride is prepared using ethyl chloroformate followed by reaction with aqueous NaN to give the acyl azide, which is thermally rearranged to the isocyanate in refluxing benzene.
• the isocyanate is quenched with 2-trimethylsilylethanol to give differentially protected tricarbamate Sl-11.
• Reaction with trifluoroacetic acid (TFA) selectively deprotects the 1,3-diamino groups to provide the desired synthon Sl-12.
• Norbomanes bicycloheptanes
• stereochemically controlled multifunctionalization of norbomanes can be achieved.
• Diels-Alder cycloaddition may be used to form norbomanes inco ⁇ orating various functional groups having specific, predictable stereochemistry.
• Enantiomerically enhanced products may also be obtained through the use of appropriate reagents, thus limiting the need for chiral separations.
• Synthons may be coupled to one another to form macrocyclic modules.
• the coupling of synthons may be accomplished in a concerted scheme.
• Preparation of a macrocyclic module by the concerted route may be performed using, for example, at least two types of synthons, each type having at least two functional groups for coupling to other synthons.
• the functional groups may be selected so that a functional group of one type of synthon can couple only to a functional group of the other type of synthon.
• a macrocyclic module may be formed having alternating synthons of different types.
• Scheme 7 illustrates a concerted module synthesis.
• SCHEME 7 [0327]
• the imine groups of S7-3 can be reduced, e.g. with sodium borohydride, to give amine linkages. If the reaction is carried out using 2,6-di(chlorocarbonyl)-4-dodec-l- ynylphenol instead of 2,6-diformyl-4-dodec-l-ynylphenol, the resulting module will contain amide linkages. Similarly, if 1,2-dihydroxycyclohexane is reacted with 2,6- di(chlorocarbonyl)-4-dodec-l-ynylphenol, the resulting module will contain ester linkages.
• the coupling of synthons may be accomplished in a stepwise scheme.
• a first type of synthon is substituted with one protected functional group and one unprotected functional group.
• a second type of synthon is substituted with an unprotected functional group that will couple with the unprotected functional group on the first synthon.
• the product of contacting the first type of synthon with the second type of synthon may be a dimer, which is made of two coupled synthons.
• the second synthon may also be substituted with another functional group which is either protected, or which does not couple with the first synthon when the dimer is formed.
• the dimer may be isolated and purified, or the preparation may proceed as a one-pot method.
• the dimer may be contacted with a third synthon having two functional groups, only one of which may couple with the remaining functional group of either the first or second synthons to form a trimer, which is made of three coupled synthons.
• Such stepwise coupling of synthons may be repeated to form macrocyclic modules of various ring sizes.
• the n* synthon which was coupled to the product may be substituted with a second functional group which may couple with the second functional group of a previously coupled synthon that has not been coupled, which may be deprotected for that step.
• the stepwise method may be carried out with synthons on solid phase support.
• Scheme 8 illustrates a stepwise preparation of module SC8-1.
• Deprotection/coupling is repeated, alternating synthons S8-3 and S8-6 until a linear construct with eight residues is obtained.
• the remaining acid and amine protecting groups on the 8-mer are removed and the oligomer is cyclized, see e.g., Caba, J. M., et al., J. Org. Chem., 2001, 66:7568 (PyAOP cyclization) and Tarver, J. E. et al., J. Org. Chem., 2001, 66:7575 (active ester cyclization).
• the R group is H or an alkyl group linked via a functional group to the benzene ring, and X is N, O, or S.
• solid supports examples include Wang resin, hydrogels, silica gels, sepharose, sephadex, agarose, and inorganic solids. Using a solid support might simplify the procedure by obviating purification of intermediates along the way. The final cyclization may be done in a solid phase mode.
• a "safety-catch linker" approach (Bourne, G. T., et al., J. Org. Chem., 2001, 66:7706) may be used to obtain cyclization and resin cleavage in a single operation.
• a concerted method involves contacting two or more different synthons and a linker molecule as shown in Scheme 9, where R may be an alkyl group or other lipophilic group.
• a stepwise convergent method involves synthon trimers and a solid phase support as shown in Scheme 11. This method can also be done without the solid phase support using trimers in solution.
• a template method involves synthons brought together by a template as shown in Scheme 12.
• Reagents for the following examples were obtained from Aldrich Chemical Company and VWR Scientific Products. All reactions were carried out under nitrogen or argon atmosphere unless otherwise noted. Solvent extracts of aqueous solutions were dried over anhydrous Na SO . Solutions were concentrated under reduced pressure using a rotary evaporator. Thin layer chromatography (TLC) was done on Analtech Silica gel GF (0.25 mm) plates or on Machery-Nagel Alugram Sil G/UV (0.20 mm) plates. Chromatograms were visualized with either UV light, phosphomolybdic acid, or KMnO 4 . All compounds reported were homogenous by TLC unless otherwise noted.
• Pig liver esterase (2909 units) was added, and the mixture stirred at ambient temperature for 72 h with the pH maintained at 7 by addition of 2M NaOH.
• the reaction mixture was washed with ethyl acetate (200 mL), acidified to pH 2 with 2M HO, and extracted with ethyl acetate (3 x 200 mL). The extracts were combined, dried, and evaporated to afford
• the mixture was stirred at room temperature and work-up initiated when the starting material Slb-1 was completely consumed (Using a solvent system of 66% EtOAc / 33% Hexane and developing with phosphomolybdic acid reagent (Aldrich #31 ,927-9) the starting material Slb-1 has an Rf of 0.88 and the product streaks with an Rf of approx. 0.34 to 0.64.).
• the reaction usually takes 2 days.
• Work-Up The THF was removed by vacuum transfer until about the same volume is left as water added to the reaction, in this case 50 mL. During this the reaction solution forms a white mass that adheres to the stir bar surrounded by clear yellow solution.
• a separatory funnel is set up including a funnel to pour in the reaction solution and an Erlenmeyer flask is placed underneath the separatory funnel. Into the Erlenmeyer flask is added some anhydrous Na 2 SO .
• This apparatus should be set up before acidification is started. (It is important to set up the separatory funnel and Erlenmeyer flask etc. before acidification of the reaction solution to enable separation of phases and extraction of the product away from the acid quickly once the solution attains a pH close to 1.
• the stopcock is turned to release the CH 2 C1 2 phase (bottom) into the Erlenmeyer flask and swirl the flask to allow the drying agent to absorb water in the solution.
• 80 mL of IN HO was used.
• the aqueous phase is extracted with CH C1 2 (2 x 100 mL), dried over anhydrous Na2SO 4 and the volatiles removed to produce 5.37 g / 9.91 mmoles of a beautiful white microcrystals reflecting a 99.1% yield.
• This product can not be purified by chromatography since that process would also hydrolyze the Boc functional group on the column.
• Example 52 e ⁇ o-Bicyclo[2.2.1]hept-5-ene-2-benzylcarboxylate-3-carboxylic acid (S5-37) [0386]
• Compound S3-19 (4.00 g, 0.0244 mol) and quinidine (8.63 g, 0.0266 mol) were suspended in equal amounts of toluene (50 mL) and carbon tetrachloride (50 mL). The suspension was cooled to -55° C after which benzyl alcohol (7.90 g, 0.0732 mol) was added over 15 minutes. The reaction mixture became homogenous after 3 hours and was stirred at -55° C for an additional 96 hours.
• reaction S5-40 is converted to the corresponding mesylate with methanesulfonyl chloride, sodium azide added to displace the mesylate to give ex ⁇ -azide, which is followed by reduction with tributyl phosphine to give the free amine, which is protected as the t-Boc derivative to give S5-41.
• S6-51 (trimethylsi_ylethoxycarbonyl)amino-5-e ⁇ r ⁇ -6-e ⁇ -dicarboxylic anhydride (S6-51).
• S6-50 formic acid, and a catalytic amount ofp-toluenesulfonic acid is heated at 90° C overnight.
• Acetic anhydride is added to the reaction mixture, and it is refluxed for an additional 6 hours. Removal of the solvents and washing with ether affords S6-51.
• Hexamer ljh To a 100 mL pear-shaped flask with magnetic stirbar under argon, Hexamer lj (0.387 mmol, 0.594 g) was added and dissolved in THF:MeOH (7:3, 28:12 mL, respectively). Next, NaBH 4 (2.32 mmol, 0.088 g) was added slowly in portions at room temperature for 6.5 h. The solvent was removed by roto-evaporation, the residue dissolved in 125 mL ethyl acetate and washed 3 X 50 mL of H 2 O. The organic layer was separated, dried over Na 2 SO and the solvent removed by roto-evaporation.
• ESI-MS 1978.5 (HexlJhAC+8-AC), 1948.8 (Hex UhAC+7-AC+Na+), 1923.3 (HexlJhAC+7-AC), 1867.6 (Hex lJhAC+6-AC), 1842.6, 1759.7 (HexlJhAC+4- AC).
• the relative stability of the Langmuir film of Hexamer la-Me is illustrated by the isobaric creep data shown in Fig. 20B.
• the area of the film decreased by about 30% after about 30 min at 5 mN/m surface pressure.
• the Langmuir isotherm and isobaric creep for Hexamer la-C15 are shown in Figs. 21 A and 2 IB, respectively.
• the relative stability of the Langmuir film of Hexamer la-C15 is illustrated by the isobaric creep data shown in Fig. 21B.
• the area of the film decreased by about 1-2% after about 30 min at 10 mN/m surface pressure, and by about 2% after about 60 min.
• the collapse pressure was about 18 mN/m for Hexamer la-C15.

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