EP3717408A1 - Funktionalisierte, bimodale periodische mesoporöse organosilikate (pmos) und verfahren zu deren herstellung mittels pseudomorpher transformation - Google Patents
Funktionalisierte, bimodale periodische mesoporöse organosilikate (pmos) und verfahren zu deren herstellung mittels pseudomorpher transformationInfo
- Publication number
- EP3717408A1 EP3717408A1 EP18814512.2A EP18814512A EP3717408A1 EP 3717408 A1 EP3717408 A1 EP 3717408A1 EP 18814512 A EP18814512 A EP 18814512A EP 3717408 A1 EP3717408 A1 EP 3717408A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pmos
- bimodal
- functionalized
- functional
- pores
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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- 239000007791 liquid phase Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002828 nitro derivatives Chemical class 0.000 description 1
- 235000019391 nitrogen oxide Nutrition 0.000 description 1
- 239000002773 nucleotide Substances 0.000 description 1
- 125000003729 nucleotide group Chemical group 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 150000008298 phosphoramidates Chemical class 0.000 description 1
- 125000005642 phosphothioate group Chemical group 0.000 description 1
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 description 1
- 229920001184 polypeptide Polymers 0.000 description 1
- 150000004032 porphyrins Chemical class 0.000 description 1
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000013074 reference sample Substances 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- 108091092562 ribozyme Proteins 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000000371 solid-state nuclear magnetic resonance spectroscopy Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- PSYAIOXWGIMXQY-UHFFFAOYSA-N tetrakis(2-triethoxysilylethyl)silane Chemical compound CCO[Si](OCC)(OCC)CC[Si](CC[Si](OCC)(OCC)OCC)(CC[Si](OCC)(OCC)OCC)CC[Si](OCC)(OCC)OCC PSYAIOXWGIMXQY-UHFFFAOYSA-N 0.000 description 1
- 229920000428 triblock copolymer Polymers 0.000 description 1
- RDWYHFFMCHYNSH-UHFFFAOYSA-N triethoxy-[2-[2-(2-triethoxysilylethyl)phenyl]ethyl]silane Chemical compound CCO[Si](OCC)(OCC)CCC1=CC=CC=C1CC[Si](OCC)(OCC)OCC RDWYHFFMCHYNSH-UHFFFAOYSA-N 0.000 description 1
- UBMUZYGBAGFCDF-UHFFFAOYSA-N trimethoxy(2-phenylethyl)silane Chemical compound CO[Si](OC)(OC)CCC1=CC=CC=C1 UBMUZYGBAGFCDF-UHFFFAOYSA-N 0.000 description 1
- JCGDCINCKDQXDX-UHFFFAOYSA-N trimethoxy(2-trimethoxysilylethyl)silane Chemical compound CO[Si](OC)(OC)CC[Si](OC)(OC)OC JCGDCINCKDQXDX-UHFFFAOYSA-N 0.000 description 1
- ODYXZRGUQPEQAM-UHFFFAOYSA-N trimethoxy-[[2-(trimethoxysilylmethyl)phenyl]methyl]silane Chemical compound CO[Si](OC)(OC)CC1=CC=CC=C1C[Si](OC)(OC)OC ODYXZRGUQPEQAM-UHFFFAOYSA-N 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 210000002845 virion Anatomy 0.000 description 1
- 238000004457 water analysis Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000001018 xanthene dye Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C11/00—Multi-cellular glass ; Porous or hollow glass or glass particles
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B37/00—Compounds having molecular sieve properties but not having base-exchange properties
- C01B37/02—Crystalline silica-polymorphs, e.g. silicalites dealuminated aluminosilicate zeolites
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
- C03C17/30—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
- C01P2002/85—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by XPS, EDX or EDAX data
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
- C01P2002/88—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by thermal analysis data, e.g. TGA, DTA, DSC
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
- C01P2002/89—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by mass-spectroscopy
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/16—Pore diameter
- C01P2006/17—Pore diameter distribution
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/40—Coatings comprising at least one inhomogeneous layer
- C03C2217/43—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase
- C03C2217/46—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase
- C03C2217/48—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase having a specific function
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/30—Aspects of methods for coating glass not covered above
Definitions
- PMOs periodic mesoporous organosilicates
- the invention relates to a process for preparing functionalized bimodal periodic mesoporous organosilicates (PMOs) by pseudomorphic transformation, functionalized bimodal periodic mesoporous organosilicates (PMOs) comprising at least one organosilicate and at least one functional constituent selected from a functional group, a dye, an enzyme and antibodies, and their use as a filter material, adsorbent, sensor material or carrier material for pharmaceuticals, insecticides or pesticides.
- PMOs functionalized bimodal periodic mesoporous organosilicates
- Porous materials especially porous glasses with their properties such as chemical, thermal and mechanical resistance and the diversity of their geometric shape have a wide application potential. They consist of 96 - 98% S1O2 and have a monomodal pore structure, which is constructed like a spongy, three-dimensional network [F. Janowski, W. Heyer, Porous Glasses - Fabrication, Properties and Applications. Editor, VEB German publishing house for basic industry, Leipzig, 1982.]. Porous glasses are available as spheres, granules or in monolithic form as a capillary, membrane, tube or rod.
- micro- ⁇ 2 nm
- meso- ⁇ 2-50 nm
- macroporous substances > 50 nm
- mesoporous glasses with a specific surface area of more than 1000 m 2 / g, a narrow pore distribution and a high distance order can be produced.
- Yanagisawa et al. describe the preparation of mesoporous silica materials of uniform pore diameter from the layered silicate kanemite using alkyltrimethylammonium surfactants to give specific surface areas of about 900 m 2 / g and pore radius distributions between 2 and 5 nm (Yanagisawa et al., 1990).
- M41S silicate phases a class of periodic mesoporous silica materials (Kresge et al., 1992, Beck et al., 1992).
- Typical representatives are mobile composition of matter no. 41 (MCM-41) and mobile composition of matter no. 48 (MCM-48).
- MCM-41 mobile composition of matter no. 41
- MCM-48 mobile composition of matter no. 48
- these inorganic compounds have hydrophilic Surfaces, whereby a hydrophobing can be ensured only via organofunctional inorganic anchor groups.
- Silicate precursors such as tetramethyl orthosilicate (TMOS), tetraethyl orthosilicate (TEOS) or tetraisopropyl orthosilicate (TPOS) are used for the sol-gel process.
- TMOS tetramethyl orthosilicate
- TEOS tetraethyl orthosilicate
- TPOS tetraisopropyl orthosilicate
- organosilicates can be prepared by the sol-gel process.
- Shea et al. and Loyt et al. describe the preparation of organosilicate xerogels and aerogels by the sol-gel process from bis- and multi-silylated organosilanes (Shea et al., 1992, Loyt et al., 1995, Shea et al., 2001).
- Condensation of bis-silylated organosilanes with the addition of structure-directing agents (e.g., surfactants) to periodic mesoporous organosilicates (PMOs) was first reported by Inagaki et al. and Melde et al.
- mesoporous organosilicates are prepared by post-prepative application of organic groups to purely inorganic, mesoporous silicate materials (grafting), wherein the surface silanol groups are reacted with organofunctional alkoxysilanes, chlorosilanes, silazanes and the cocondensation, in the silicate precursors, such as TEOS with alkoxysilanes , Chlorosilanes and a structure-directing agent (Hoffmann et al., 2006).
- the reaction with organic molecules may lead to a decrease in porosity due to possible pore closure.
- the formation of the periodic mesoporous organosilicates takes place by means of an endotemplating method.
- the object of the present invention is to provide a method for producing bimodal porous materials, in which the pore size, the geometry and the functionalization can be varied.
- the object is achieved by the process according to the invention for producing functionalized bimodal periodic mesoporous organosilicates (PMOs), preferably with hexagonal or cubic pores, by means of pseudomorphic transformation comprising the steps: a) providing a monomodal meso or macroporous glass,
- functionalized means the modification with at least one functional constituent.
- monomodal means the presence of a pore system.
- bimodal means the presence of two pore systems.
- a pore system is understood to mean a system of cavities in materials or coatings, which are differentiated according to their pore diameter.
- Bimodal pore systems preferably have a hierarchical structure, ie that the secondary pores branch off from the primary pores.
- the pores with the larger pore diameter, also the transport pores are understood to be under Prpor pores and pores with the smaller pore diameter, also called reaction pores, are called secondary pores.
- the pore systems comprise pores selected from meso and macropores.
- mesopores are meant pores having a pore diameter of 2 nm to 50 nm.
- macropores pores having a pore diameter of at least 50 nm, preferably greater than 50 nm, are understood.
- periodic mesoporous organosilicates are understood to mean organosilicates having at least one system of at least partially ordered mesopores and a narrow distribution of pore radii.
- a pseudomorphic transformation means a conversion of porous silicates to ordered mesoporous silicates, so-called "micellar templated silicas", by endotemplate synthesis, wherein the starting pore system, i. H. the pore system of the porous silicates is converted to an ordered mesoporous pore system prior to the pseudomorphic transformation to obtain the macroscopic form of the porous silicates.
- the self-assembly of a structure-directing agent during the pseudomorphic transformation results in an ordered pore system.
- the partial pseudomorphic transformation after step d) results in the formation of a bimodal pore system comprising primary and secondary pores.
- glass is understood to mean an amorphous, porous solid containing silicon dioxide.
- Controlled porous glasses are understood as meaning porous silicates which are produced from alkali borosilicate glass by a temperature treatment, phase separation into a silicate phase and a borate phase and extraction of the borate phase.
- VYCOR glass is meant a porous glass or quartz glass made by the VYCOR process.
- the addition of at least one silylated organosilane is carried out in step b.
- the addition of at least one functional constituent takes place after step a) or after step e) or after step a) and after step e).
- the binding of the functional component is effected by adsorption or covalent bonding.
- Functional constituent is understood to mean a group or a molecule residue which has a reactivity, color intensity, luminescence intensity, enzymatic activity or antigen-binding properties.
- the at least one functional component is selected from a functional group, a dye, an enzyme, a protein, an antibody, a nucleic acid, a virus or a noble metal cluster.
- a functional group is understood as meaning a molecule which decisively determines the material properties, in particular the hydrophobicity, and / or the reaction behavior of the PMOs.
- the functional group is substituted alkoxysilanes, preferably 3'-glycidyloxypropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, N- (6-aminohexyl) aminopropyltrimethoxysilane, trimethoxy (2-phenylethyl) silane; substituted chlorosilanes, substituted silanes, bisepoxides, substituted polydimethylsiloxanes (PDMS), preferably hydroxypolydimethylsiloxanes (OH-PDMS); substituted silazanes, preferably hexamethyldisilazane (HDMS); Boranes, substituted alkoxy titanium compounds, bisilanes, alkoxides,
- the functional group comprises anchor molecules.
- Anchor molecules are understood to mean a connecting molecule and spacers.
- the anchor molecules serve as spacers.
- the functional components are covalently bound to the anchor molecules.
- the dye is composed of oxygen-sensitive dyes, carbon dioxide-sensitive dyes, pH-sensitive dyes, temperature-sensitive dyes, pressure-sensitive dyes, nitrogen-oxide-sensitive dyes, amino-sensitive dyes and / or peroxylate-sensitive dyes Dyes selected.
- the oxygen-sensitive dye is selected from luminescent dyes, preferably from metalloporphyrins, metallophenanthrolines or metallobipyridines, more preferably palladium-porphyrins, phenanthrolines or bipyridines, Platinum porphyrins, phenanthrolines or bipyridines, ruthenium porphyrins, phenanthrolines or bipyridines.
- Luminescent dye is understood as meaning a substance which emits light in the visible, UV or IR spectral range after the supply of energy.
- the carbon dioxide-sensitive dye is selected from luminescent dyes, preferably from ruthenium porphyrins, phenanthrolines or bipyridines, aza-BODIPY dyes, most preferably aza-BODIPY-phenol red; Triphenylmethanfarbstoffen, particularly preferably Bromthymolblau, bromophenol blue or
- cresol Fluorescein or fluorescein isothiocyanate (FITC), pyrene dyes, more preferably pyranine; or azo dyes.
- FITC Fluorescein or fluorescein isothiocyanate
- the pH-sensitive dye is selected from luminescent dyes, preferably aza-BODIPY dyes, most preferably aza-BODIPY-phenol red; Triphenylmethanfarbstoffen, particularly preferably Bromthymolblau, bromophenol blue or
- cresol preferably cresol
- Xanthene dyes preferably rhodamine, fluorescein or fluorescein isothiocyanate (FITC)
- FITC fluorescein isothiocyanate
- Pyrene dyes more preferably pyranine
- azo dyes preferably azo dyes.
- Liu et Sullivan disclose temperature-sensitive dyes and pressure-sensitive dyes (Liu et Sullivan 2005).
- the temperature-sensitive and pressure-sensitive dyes are preferably selected from luminescent dyes.
- the temperature-sensitive dyes are more preferably of pyronines, most preferably rhodamines; Metalloperylenes, metallobipyridines, metallophenanthrolines, preferably tris (1, 10-phenanthroline) ruthenium (II) dichloride; or europium (III) thenoyl trifluoroacetonates.
- the pressure-sensitive dyes are more preferably selected from metalloporphyrins, metalloperylenes, metallophenanthrolines, preferably tris (1, 10-phenanthroline) ruthenium (II) dichloride or metallobipyridines.
- the nitric oxide-sensitive dye is selected from metal oxides, preferably ZnO, SnO 2 or V2O5.
- the dye is selected from nitro-sensitive dyes.
- nitro-sensitive dye is meant a dye which is sensitive to nitro compounds, e.g. Trinitrotoluene (TNT) or dinitrotoluene (DNT).
- TNT Trinitrotoluene
- DNT dinitrotoluene
- the nitro-sensitive dye is selected from metalloporphyrins.
- the amino-sensitive dye is selected from metal oxides, preferably ZnO, SnO 2 or V2O5.
- the peroxylate-sensitive dye is selected from luminescent dyes, preferably from metalloporphyrins.
- an enzyme is a biomolecule, which can accelerate a chemical reaction as a catalyst. Most enzymes are proteins. However, the term also includes kalalytically active RNA (ribozymes).
- the enzyme is selected from oxidoreductases or hydrolases, preferably the enzyme is selected from acetylcholinesterases or aldehyde dehydrogenases.
- a protein is a biomolecule composed of amino acid residues through peptide bonds.
- the term encompasses both peptides having at least 2 amino acid residues and macromolecules, which may have several thousand amino acid residues and may also be composed of several polypeptide chains as subunits.
- the protein is from globular and fibrillar proteins, such as e.g. G., Globulins and keratin.
- antibody in the sense of the invention includes all antibodies or antibody fragments capable of binding specifically to an antigen.
- Recombinant antibodies are antibodies produced using genetically modified organisms.
- the term antibody encompasses both the complete monoclonal antibodies and their epitope-binding fragments.
- the epitope-binding fragments also referred to herein as antibody fragments
- Antibody fragments within the meaning of the invention include Fab, Fab ', F (ex Fd, single-chain variable fragments (scFv), single-chain antibodies, disulfide-linked variable fragments (sdFv) and fragments containing either a light chain variable region (VL Antibody fragments contain the variable regions, either alone or in combination with other regions selected from the hinge region, and the first, second and third regions of the constant region (C H 1, C H 2, C H 3).
- the term antibody comprises recombinantly produced antibodies, such as diabodies, triabodies and tetrabodies. Also encompassed by the term antibody are chimeric antibodies in which different parts of the antibody are from different species, such as For example, antibodies having a murine variable region combined with a human constant region.
- the antibody is selected from immunoglobulins, preferably immunoglobulin A, immunoglobulin D, immunoglobulin E, immunoglobulin G, immunoglobulin M, immunoglobulin W or immunoglobulin Y.
- the antibody is labeled, preferably labeled with a fluorescent dye, most preferably with Fluorescein isothiocyanate, tetramethylrhodamine isocyanate or fluorescein labeled.
- nucleic acid includes in the sense of this description deoxyribonucleic acids (DNA), ribonucleic acids (RNA) and peptidic nucleic acids (PNA), as well as all derivable from these basic structures modifications such. Phosphothioates, phosphoramidates, O-methyl derivatives and locked nucleic acids (LNA).
- the nucleic acids can be single strands, double strands or structures mixed therefrom. In one embodiment, the nucleic acid is composed of different nucleotides.
- Viruses are understood in particular to be infectious particles which propagate as virions outside of cells by transmission and multiply as viruses within a suitable host cell.
- the term also includes attenuated (or attenuated) or recombinant viruses which are not infectious or capable of propagation under certain circumstances (eg, in special packaging cells).
- the virus is virus for e.g. Waters, water analysis selected.
- a noble metal cluster is understood to mean compounds of at least three noble metal atoms, which are connected by metal-metal bonds.
- the noble metal cluster is selected from silver or gold clusters.
- the at least one functional component is a luminescent dye and a noble metal cluster.
- the noble metal cluster enhances the luminescence of the luminescent dye.
- the addition of at least one functional component takes place after step a) or after step a) and after step e) or only after step e).
- thermosensitive functional constituents such as viruses, nucleic acids and proteins, enzymes and antibodies, and temperature-sensitive dyes
- the addition is preferably carried out after step e).
- step a) after step a) the addition of a functional group and then the addition of a further functional constituent selected from a dye, an enzyme, a protein, an antibody, a nucleic acid, a virus or a noble metal cluster takes place.
- step a) after step a), the addition of a functional group selected from hydrophobic functional groups, preferably organofunctional trialkoxysilanes, followed by the addition of another hydrophobic functional constituent.
- the functional constituent is not adsorptively absorbed by the covalent bond. but also covalently held in the system.
- step a) after step a), the addition of a functional group and then the addition of a further functional constituent takes place, whereby a covalent bonding of the functional group to the further functional constituent takes place.
- the incorporation of the functional group and the further functional constituent takes place in the PMO according to the invention.
- a silylated organosilane is understood as meaning an organo-bridged alkoxysilane, organo-bridged alkylhydroxysilane or organo-bridged alkylchlorosilane.
- the at least one silylated organosilane is selected from bisilanes, trisilanes, tetrasilanes and polysilanes, whereby bisilanes are understood as meaning an organo bridged silane having two silyl groups, an organo bridged silane with three silyl groups under trisilanes, an organo bridged silane with four silyl groups under tetrasilanes
- Polysilanes are understood to mean an organo-bridged silane with many silyl groups, with many silyl groups meaning at least 5.
- the at least one multi-silylated organosilane is selected from unsubstituted or substituted bissilanes, preferably from unsubstituted or substituted, saturated or unsaturated, linear or cyclic bis (trimethoxysilyl) or bis (triethoxysilyl) C1 to C12 hydrocarbon compounds, more preferably Bis (trimethoxysilylmethyl) benzene, bis (trimethoxysilylethyl) benzene, bis (triethoxysilylethyl) benzene, bis (triethoxysilylethyl) biphenyl, 1,2-bis (trimethoxysilyl) ethane, bis [3- (trimethoxysilyl) propyl] amine.
- C1 to C12 hydrocarbon compounds are meant hydrocarbon compounds having one to 12 carbon atoms.
- the at least one poly silylated organosilane is selected from unsubstituted or substituted trisilanes or tetrasilanes, preferably from unsubstituted or substituted, saturated or unsaturated, linear or cyclic tris (trimethoxysilyl), tris (triethoxysilyl), tetra ( Trimethoxysilyl) or tetra (triethoxysilyl) -Cl to C 12 -hydrocarbon compounds, very particularly preferably from 1, 3,5-tris (triethoxysilyl) benzene, 1,3,5-tris (triethoxysilyl) cyclohexane or tetra (triethoxysilyl-ethyl) silane.
- solvent an inorganic or organic liquid which can physically solubilize solid or liquid substances.
- a prerequisite for the suitability as a solvent is that neither the bsende nor the dissolved substance chemically change during the dissolution process.
- the solvent is selected from organic solvents, preferably acetone, ethanol, methanol and / or toluene.
- step c) drying and crosslinking of the at least one silylated organosilane at the surface of the monomodal meso or macroporous glass takes place at a temperature between 60 and 170 ° C. for 12 to 24 hours, preferably at a temperature of at least the boiling point of the solvent and at most the boiling point of the silylated organosilane.
- the adsorption and / or covalent binding of the functional constituent and of the at least one silylated organosilane is carried out to the surface of the monomodal meso or macroporous glass.
- surface is meant the inner and outer pore surface.
- step c) the drying and crosslinking of the at least one silylated organosilane on the surface of the monomodal meso or macroporous glass takes place in step c) for 18 hours.
- the structure-directing agent in step d) is composed of ionic surfactants or nonionic surfactants selected, preferably from ionic surfactants, most preferably hydroxides of quaternary alkyl ammonium compounds.
- the ionic surfactant is prepared from bromide and chloride salts of C6 to C18 alkyltrimethylammonium compounds or bromide and chloride salts of the alkylpyridinium compounds by anion exchangers, preferably hexadecyltrimethylammonium bromide (CTAB),
- anion exchangers preferably hexadecyltrimethylammonium bromide (CTAB)
- CAC Hexadecyltrimethylammonium chloride
- OAB octadecyltrimethylammonium bromide
- OTAC octadecyltrimethylammonium chloride
- the nonionic surfactant is triblock copolymers, preferably poloxamers or poly (ethylene oxide) -poly (DL-lactic-co-glycolic acid) -poly (ethylene oxide) (EOi 6 (L 28 G 3 ) EOi 6 ), selected.
- Poloxamers are understood as meaning block copolymers of ethylene oxide (EO) and propylene oxide (PO) or ethylene oxide (EO) and butylene oxide (BO).
- the nonionic surfactant is selected from P-123 (EO20PO70EO20), F-127 (EO106PO70EO106) and B50-6600 (EO39BO47EO39).
- the pore diameter of the secondary pore system of the PMOs can be adjusted in the range from 2 nm to 50 nm.
- the pseudomorphic transformation in step d) takes place at a pH of at least pH 12.
- the pseudomorphic transformation in step d) takes place for 1 to 7 days, preferably for 3 days.
- the pseudomorphic transformation is carried out at a temperature between 100 ° C and 130 ° C.
- an end-capping takes place after the steps a) to e). Endcapping is a replacement of terminal silanol groups, in particular by non-reactive groups such. As alkyl or alkylsilyl understood.
- the method according to the invention takes place by the Endcapping a closure of the pores.
- the secondary pores are closed by addition of basic aminoorganoalkoxysilanes, preferably (3-aminopropyl) triethoxysilane (APTES).
- APTES (3-aminopropyl) triethoxysilane
- the process according to the invention advantageously involves the production of periodic mesoporous materials with a bimodal pore system, with a narrow distribution of pore radii being achieved. It is furthermore advantageous to prepare the PMOs while preserving the macroscopic form. Furthermore, the pore size of the secondary pores can be varied by selecting the structure-directing agent, and the functionalization can be varied by selecting the functional constituent, with the process according to the invention providing a homogeneous distribution of the functional constituents in the PMO. Also advantageous is the flexible choice of the geometry of the starting material and size of the transport pores.
- the object is achieved by functionalized, bimodal periodic mesoporous organosilicates (PMOs) comprising at least one organosilicate and at least one functional component, wherein the functionalized, bimodal PMOs have primary pores and Se kundärporen, wherein the primary pore meso or macropores with an average union pore diameter of 30 nm to 200 nm, preferably macropores having a diameter in the range of 60 to 200 nm, wherein the secondary pores are mesopores with an average pore diameter of 2 nm to 50 nm, preferably with a diameter in the range of 2 to 30 nm, more preferably in the range 2 to 20 nm, wherein the functionalized, bimodal PMOs have a specific surface area of at least 500 m 2 / g.
- PMOs periodic mesoporous organosilicates
- the specific surface is understood to mean the totality of surfaces contained in a sample, including between grains and within pores.
- the specific surface area is preferably determined by nitrogen-low-temperature adsorption (according to BET DIN-ISO 9277).
- the functionalized, bimodal PMOs according to the invention have a specific surface area between 500 n / g and 1200 m 2 / g. In a preferred embodiment, the functionalized, bimodal PMOs according to the invention have a specific surface area between 800 m 2 / g and 1000 m 2 / g.
- the functionalized, bimodal PMOs according to the invention have a maximum of 10% closed pores, preferably at most 5%, particularly preferably at most 1%.
- the determination of the proportion of open porosity can be done by helium density measurements according to DIN 1936.
- the periodic mesoporous organosilicate has a hexagonal or cubic microscopic structure.
- Ingredients are essentially SiCs with built-in organic bridges in the SiCFE network.
- the PMOs preferably have a proportion of S1Q2 above 70%.
- the macroscopic form of the functionalized bimodal PMOs is a membrane, a fiber, a cube, a sphere, a cylinder, a tube, or granules.
- the functionalized, bimodal PMO according to the invention is dimensionally stable. Under dimensionally stable is understood to mean the absence of shrinkage and the absence of cracks.
- the bimodal PMOs according to the invention also advantageously have pore systems with a narrow pore radius distribution and a homogeneous distribution of the functional constituents in the PMO.
- optical sensor comprising the functionalized, bimodal PMO according to the invention.
- the optical sensor comprising the functionalized, bimodal PMO according to the invention for the qualitative and / or quantitative detection of an analyte in a sample, preferably the oxygen partial pressure, the proportion of dissolved oxygen or the carbon dioxide partial pressure of a sample or for the quantification of the pH, pressure or Temperature of a sample formed.
- Another aspect of the invention relates to the use of the optical sensor for the qualitative and / or quantitative detection of an analyte in a sample, for the quantification of the oxygen partial pressure (PO2), the dissolved oxygen (DOO), the carbon dioxide partial pressure (PCO2), the pH Values, for quantifying the pH, pressure and / or temperature of a sample.
- the optical sensor for the qualitative and / or quantitative detection of an analyte in a sample, for the quantification of the oxygen partial pressure (PO2), the dissolved oxygen (DOO), the carbon dioxide partial pressure (PCO2), the pH Values, for quantifying the pH, pressure and / or temperature of a sample.
- a further aspect of the invention relates to the use of the functionalized, bimodal PMOs according to the invention as filter material, adsorbent, sensor material or carrier material for pharmaceuticals, insecticides or pesticides, preferably as sensor material.
- the use of the functionalized, bimodal PMOs according to the invention takes place as a coating for filter materials, adsorbents, sensor materials or carrier material for pharmaceuticals, insecticides or pesticides, preferably as a coating for sensor materials.
- Fig. 2 Thermogravimetry / differential thermal analysis using platinum (II) -5,10,15,20-tetrakis- (2,3,4,5,6-pentafluorophenyl) -porphyrin (PtTFPP) functionalized PMOs.
- Fig. 3 29 Si Cross Polarization Magic Angle Spinning (CP-MAS) nuclear magnetic resonance (NMR) spectra of functionalized (A) PMOs without functional ingredient and (B) by means of PtTFPP PMOs.
- CP-MAS Cross Polarization Magic Angle Spinning
- NMR nuclear magnetic resonance
- a certain concentration of functional component is dissolved in 1 ml of solvent and catalyst.
- the mixture is added to 1 g of starting material, shaken to homogeneity and reacted for one hour at 75 ° C.
- the drying takes place at a suitable temperature overnight. This is followed by washing three times with a suitable solvent and washing once with another solvent at room temperature. Drying takes place at the appropriate temperature overnight.
- Subsequent PMO preparation 1 g of sample is mixed with a mixture of 1: 4 organosilane / toluene, shaken to homogeneity and left to stand closed for a certain time at room temperature. The drying takes place at 120 ° C overnight. Thereafter, the sample is added with the structure-directing agent and reacted for 1 to 7 days at the appropriate temperature. This is followed by extraction with methanolic hydrochloric acid. The sample is washed neutral with distilled water and dried at 120 ° C overnight.
- the measurement of the sample was carried out on the device Autosorb iQ from Quantachrome at -196 ° C. Activation took place at 150 ° C.
- the sample PMO PtTFPP is a PMO made of CPG spheres with output pores of size 120 nm.
- the organosilane used was bis (trimethoxysilylethyl) benzene and functional component PtTFPP.
- FIG. 1 (A) Nitrogen isotherm and (B) pore radius distribution of PMOs functionalized by platinum (II) -5, 10,15,20-tetrakis- (2,3,4,5,6-pentafluorophenyl) -porphyrin (PtTFPP).
- the nitrogen isotherm corresponds to a sorption isotherm type IVb.
- the pore radius distribution confirms that pores with a diameter of 4 nm and the exit pores (120 nm) are present.
- Type IVb isothermal according to IUPAC, without hysteresis is typical of mesoporous materials and shows pore diameters of 3 after BJH and 4.1 after DFT.
- Thermogravimetry is the determination of the mass loss of a substance in a temperature range of RT - 800 ° C. For this, the sample is heated continuously in a constant air flow (50 ml / min) at 10 K / min. If temperature increases cause reactions such as dehydration, oxidation or decomposition, the mass of the sample decreases. This mass change is measured as a function of the temperature or time.
- the mass loss can be continuous or stepwise.
- the measurements were carried out on the LINSEIS STA PT1600 device from Linseis.
- the sample PMO PtTFPP used is a PMO made of CPG spheres with exit pores of size 120 nm.
- the organosilane used was bis (trimethoxysilylethyl) benzene and the functional constituent PtTFPP.
- Fig. 2 Thermogravimetry / differential thermal analysis using platinum (II) -5,10, 15,20-tetrakis- (2,3,4,5,6-pentafluorophenyl) -porphyrin (PtTFPP) functionalized PMOs.
- Thermogravimetry shows a loss of mass at 100 ° C by physisorbed water, a loss of mass at 420 ° C by the decomposition of organometallic complexes, a loss of mass at 500 to 650 ° C by incorporated in the silane network phenyl groups and a total mass loss (200 to 800 ° C) of 9% (m / m).
- the 29 Si CP MAS NMR measurement was carried out with Bruker Avance 750, rotation frequency 7 kHz, repetition time 3 s and a contact time of 5 ms.
- the sample PMO PtTFPP used is a PMO made of CPG spheres with exit pores of size 120 nm.
- the organosilane used was bis (trimethoxysilylethyl) benzene and the functional constituent PtTFPP.
- the reference sample PMO is a PMO prepared from CPG spheres with output pores of size 120 nm.
- organosilane bis (trimethoxysilylethyl) benzene was used as organosilane bis (trimethoxysilylethyl) benzene was used.
- Fig. 3 29 Si-Cross polarization magic angle spinning (CP-MAS) nuclear magnetic resonance (NMR) spectra of (A) PMOs with no functional component and (B) PtTFPP-functionalized PMOs. It can be clearly seen from the signals and their intensities (Table 6) that the direct input of the dye PtTFPP leads to no change in the silicate network. The dye does not affect the formation of the periodic mesoporous system and there is no attachment between the PMO and the dye. It is likely that the dye is encapsulated adsorbed in the PMO network.
- CP-MAS polarization magic angle spinning
- NMR nuclear magnetic resonance
- the 13 C CP-MAS NMR measurement was carried out with Bruker Avance 750, rotation frequency 10 kHz, repetition time 3 s.
- a model compound is used which is very similar to the tethering molecule in the porphyrin complex of PtTFPP, hexafluorobenzene.
- the PG APTES sample used is CPG spheres with exit pores of size 120 nm modified with 3-aminopropyltriethoxyilane.
- the sample PG APTES hexafluorobenzene are CPG spheres with exit pores of size 120 nm modified with 3-aminopropyltriethoxyilane and subsequent attachment of hexafluorobenzene to APTES.
- FIG. 4 shows 13 C-Cross polarization magic angle spinning (CP-MAS) nuclear magnetic resonance (NMR) spectra of (A) using (3-aminopropyl) triethoxysilane (APTES) and hexafluorobenzene-modified CPG at a contact time of 2 ms, (FIG. B) CPG modified by APTES and hexafluorobenzene at a contact time of 500 ps, and (C) APTES modified CPG at a contact time of 500 ps.
- CP-MAS CP-MAS nuclear magnetic resonance
- the CP-MAS NMR measurement was carried out with Bruker Avance 750, rotation frequency 10 kHz, repetition time 3 s.
- the 13 C-CP-MAS NMR spectra show a covalent bond between APTES and hexafluorobenzene (Table 7 and Tab. 8).
- the signal of C3 at 45.3 ppm decreases and the signal of C-NH-benzene (C ' 3) at 48.3 ppm can be clearly seen, as well as the benzen signals (aromatic region) 124 and 138 ppm in the aromatic range of 120 to 145 ppm.
- the signal C-NH-C (aromatic range) at 1 16 ppm is not detectable due to low concentration or contact time.
- the peak at 124 ppm shows that there is a change in hexafluorobenzene. It is no longer highly symmetrical.
- APTES (3-aminopropyl) triethoxysilane
- hexafluorobenzene reference: Tab. 8 Shifts and intensities of APTES hexafluorobenzene 13 C-CP MAS NMR signals.
- FIG. 5 shows 13 C-Cross Polarization Magic Angle Spinning (CP-MAS) nuclear magnetic resonance (NMR) spectra of (A) using N- (6-aminohexyl) aminopropyltrimethoxysilane (AHAPTMS) and hexafluorobenzene-modified CPG at a contact time of 2 ms, (B) AHAPTMS and hexafluorobenzene-modified CPG at a contact time of 500 ps and (C) AHAPTMS-modified CPG at a contact time of 500 ps.
- CP-MAS N- (6-aminohexyl) aminopropyltrimethoxysilane
- the CP-MAS NMR measurement was carried out with Bruker Avance 750, rotation frequency 10 kHz, repetition time 3 s.
- the functionalized bimodal PMOs are thoroughly rinsed with toluene. Thereby no leaching effect occurs, whereby the incorporation of the functional component into the network could be confirmed.
- the oxygen measurement was from 0% to 20.95% by volume of oxygen versus nitrogen ( Figure 6).
- Fig. 6 shows (A) the phase shift and (B) the Stern-Volmer plot of PtTFPP-functionalized PMOs in the oxygen concentration range of 0 to 20.95% by volume.
- the Stern-Volmer equation describes the dependence of the fluorescence intensity of a fluorescent dye on the concentration of substances that quench fluorescence, e.g. B. oxygen.
- the Stern-Vollmer plot shows a linear progression and the Stern-Volmer constant Ksv was determined to be 0.0244.
- Fig. 7 shows a diffractogram of the functionalized bimodal PMO. This features reflections 100, 110, and 200, which are typical of hexagonal pore structure with pseudo-crystalline walls. Quoted non-patent literature
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PCT/EP2018/082480 WO2019101980A1 (de) | 2017-11-27 | 2018-11-26 | Funktionalisierte, bimodale periodische mesoporöse organosilikate (pmos) und verfahren zu deren herstellung mittels pseudomorpher transformation |
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