WO2012075130A2 - Stable free radical chromophores and mixtures thereof, processes for preparing the same, nonlinear optic materials, and uses thereof in nonlinear optical applications - Google Patents
Stable free radical chromophores and mixtures thereof, processes for preparing the same, nonlinear optic materials, and uses thereof in nonlinear optical applications Download PDFInfo
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- WO2012075130A2 WO2012075130A2 PCT/US2011/062627 US2011062627W WO2012075130A2 WO 2012075130 A2 WO2012075130 A2 WO 2012075130A2 US 2011062627 W US2011062627 W US 2011062627W WO 2012075130 A2 WO2012075130 A2 WO 2012075130A2
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-M hydrogensulfate Chemical compound OS([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-M 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 125000002632 imidazolidinyl group Chemical group 0.000 description 1
- 125000002636 imidazolinyl group Chemical group 0.000 description 1
- 125000002883 imidazolyl group Chemical group 0.000 description 1
- 125000003453 indazolyl group Chemical group N1N=C(C2=C1C=CC=C2)* 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 125000003387 indolinyl group Chemical group N1(CCC2=CC=CC=C12)* 0.000 description 1
- 125000003406 indolizinyl group Chemical group C=1(C=CN2C=CC=CC12)* 0.000 description 1
- 125000001041 indolyl group Chemical group 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 125000002346 iodo group Chemical group I* 0.000 description 1
- 125000000904 isoindolyl group Chemical group C=1(NC=C2C=CC=CC12)* 0.000 description 1
- TWBYWOBDOCUKOW-UHFFFAOYSA-M isonicotinate Chemical compound [O-]C(=O)C1=CC=NC=C1 TWBYWOBDOCUKOW-UHFFFAOYSA-M 0.000 description 1
- 125000002183 isoquinolinyl group Chemical group C1(=NC=CC2=CC=CC=C12)* 0.000 description 1
- 125000001786 isothiazolyl group Chemical group 0.000 description 1
- 125000000842 isoxazolyl group Chemical group 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- MNZMMCVIXORAQL-UHFFFAOYSA-N naphthalene-2,6-diol Chemical compound C1=C(O)C=CC2=CC(O)=CC=C21 MNZMMCVIXORAQL-UHFFFAOYSA-N 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000004593 naphthyridinyl group Chemical group N1=C(C=CC2=CC=CN=C12)* 0.000 description 1
- 230000009022 nonlinear effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 125000001715 oxadiazolyl group Chemical group 0.000 description 1
- 125000002971 oxazolyl group Chemical group 0.000 description 1
- 125000003551 oxepanyl group Chemical group 0.000 description 1
- 125000003566 oxetanyl group Chemical group 0.000 description 1
- 229940014662 pantothenate Drugs 0.000 description 1
- 235000019161 pantothenic acid Nutrition 0.000 description 1
- 239000011713 pantothenic acid Substances 0.000 description 1
- 229950000688 phenothiazine Drugs 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 125000004592 phthalazinyl group Chemical group C1(=NN=CC2=CC=CC=C12)* 0.000 description 1
- 125000004193 piperazinyl group Chemical group 0.000 description 1
- 229920005575 poly(amic acid) Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- 125000001042 pteridinyl group Chemical group N1=C(N=CC2=NC=CN=C12)* 0.000 description 1
- 125000000561 purinyl group Chemical group N1=C(N=C2N=CNC2=C1)* 0.000 description 1
- 125000003373 pyrazinyl group Chemical group 0.000 description 1
- 125000003072 pyrazolidinyl group Chemical group 0.000 description 1
- 125000002755 pyrazolinyl group Chemical group 0.000 description 1
- 125000003226 pyrazolyl group Chemical group 0.000 description 1
- 125000002098 pyridazinyl group Chemical group 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 125000000719 pyrrolidinyl group Chemical group 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 125000002294 quinazolinyl group Chemical group N1=C(N=CC2=CC=CC=C12)* 0.000 description 1
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 229960001860 salicylate Drugs 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000012453 solvate Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 125000003718 tetrahydrofuranyl group Chemical group 0.000 description 1
- 125000001412 tetrahydropyranyl group Chemical group 0.000 description 1
- 125000005958 tetrahydrothienyl group Chemical group 0.000 description 1
- 125000004632 tetrahydrothiopyranyl group Chemical group S1C(CCCC1)* 0.000 description 1
- 125000003831 tetrazolyl group Chemical group 0.000 description 1
- 125000001113 thiadiazolyl group Chemical group 0.000 description 1
- 125000005308 thiazepinyl group Chemical group S1N=C(C=CC=C1)* 0.000 description 1
- 125000001544 thienyl group Chemical group 0.000 description 1
- 125000001583 thiepanyl group Chemical group 0.000 description 1
- 125000002053 thietanyl group Chemical group 0.000 description 1
- 125000005503 thioxanyl group Chemical group 0.000 description 1
- 238000003354 tissue distribution assay Methods 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- 125000004306 triazinyl group Chemical group 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/636—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D241/00—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
- C07D241/36—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings condensed with carbocyclic rings or ring systems
- C07D241/38—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings condensed with carbocyclic rings or ring systems with only hydrogen or carbon atoms directly attached to the ring nitrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/06—Peri-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
- C07D487/04—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/12—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains three hetero rings
- C07D487/14—Ortho-condensed systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/08—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of polarising materials
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/35—Non-linear optics
- G02F1/355—Non-linear optics characterised by the materials used
- G02F1/361—Organic materials
- G02F1/3611—Organic materials containing Nitrogen
- G02F1/3612—Heterocycles having N as heteroatom
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6572—Polycyclic condensed heteroaromatic hydrocarbons comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- EO electro-optic
- CATV cable television
- ECM electronic counter measure systems
- backplane interconnects for high-speed computation, ultrafast analog-to-digital conversion, land mine detection, radio frequency photomcs, spatial light modulation and all-optical (light-switching-light) signal processing.
- Nonlinear optic (“NLO”) materials are capable of varying their first-, second-, third- and higher-order polarizabilities in the presence of an externally applied electric field or incident light (two-photon absorption).
- the second-order polarizability hyperpolarizability or ⁇
- third-order polarizability second-order hyperpolarizability or ⁇
- the hyperpolarizability is related to the change of a NLO material's refractive index in response to application of an electric field.
- the second-order hyperpolarizability is related to the change of refractive index in response to photonic absorbance and thus is relevant to all-optical signal processing.
- the third-order polarizability relates to the change of refractive index in response to an intense light field.
- a more complete discussion of nonlinear optical materials may be found in D. S. Chemla and J. Zyss, Nonlinear optical properties of organic molecules and crystals, Academic Press, 1987 and K.-S. Lee, Polymers for Photonics Applications I, Springer 2002, the entire contents of which are hereby incorporated by reference.
- NLO molecules chromophores
- ⁇ molecular dipole moment
- ⁇ hyperpolarizability
- ⁇ hyperpolarizability
- DR Disperse Red
- NLO material performance tends to decrease dramatically after approximately 20- 30% weight loading.
- One possible solution to this situation is the production of higher performance chromophores that can produce the desired hyperpolar character at significantly lower molar concentrations.
- Improved chromophore architectures should: (i) exhibit improved CT and/or quasi-polar state stability; (ii) not incorporate structures that undergo photo-induced cis-trans isomerization; and (iii) be highly resistant to polymerization processes through the possible full-exclusion of naked alternating bonds.
- the present invention relates, in general, to nonlinear optic chromophores comprising stabilized radical structures, methods for their production, nonlinear optical materials containing such chromophores, and the use of such materials in electro-optic devices.
- One embodiment of the present invention includes nonlinear optic, stabilized radical, chromophores of the general formula (I), and chromophore
- D represents an organic electron donating group
- A represents an organic electron accepting group having an electron affinity greater than the electron affinity of D
- ⁇ represents a fused, offset, polycyclic, optionally heteroatom-containing, pi- conjugated core
- A is bound to the core at two atomic positions on the core such that at least a portion of A forms a ring fused to the core
- D is bound to the core at two atomic positions on the core other than the two atomic positions at which A is bound to the core such that at least a portion of D forms a ring fused to the core
- the stabilized radical is optionally substituted with one or more pendant spacer groups.
- Various embodiments of the present invention include nonlinear optic chromophore compositions which comprise mixtures of two or more stabilized radical chromophores of the general formula (I).
- certain embodiments of the present invention include nonlinear optic chromophore compositions which comprise mixtures of nitro radicals of the general formula (I) and nitroxyl radicals of the general formula (I).
- Certain embodiments of the present invention include nonlinear optic chromophore compositions which comprise mixtures of nitro radicals of the general formula (I) and/or nitroxyl radicals of the general formula (I), in addition to the "iso" version of such radicals, as described further below in this application.
- nonlinear optic chromophore compositions which comprise mixtures of nitro radicals of the general formula (I) and/or nitroxyl radicals of the general formula (I), and/or their "iso" versions, in addition to neutral (non- radicalized) chromophores referred to herein as PerkinamineTM chromophores.
- Nonlinear optic chromophore compositions which comprise a mixture of two or more radicals selected from radicals of the general formula (P), nitro radicals of the general formula (la) and a nitroxyl radicals of the general formula (lb):
- Nonlinear optic chromophores and compositions containing one or more such chromophores according to the present invention surprisingly provide a significant improvement over existing chromophore architectures by exhibiting significantly greater electro-optic properties and also possessing a high degree of rigidity, and smaller conjugative systems that concentrate NLO activity within more compact molecular dimensions.
- nonlinear optic chromophores according to the present 7 Atty Docket No.: 12583-00049-WO
- PNR2-US exhibit improved CT and/or quasi-polar state stability; do not incorporate structures that undergo photo-induced cis-trans isomerization; and are highly resistant to polymerization processes through the possible full-exclusion of naked alternating bonds.
- the nonlinear optic chromophores according to the present invention do not incorporate naked bond-alternating chains that are susceptible to bending or rotation.
- the central anti-aromatic conductors "pull" the molecule into a quasi-CT state; since aromaticity and non-CT states are both favorably low-energy conditions, charge transfer and aromaticity within the molecular systems described herein are set against each other within a competitive theater. This competitive situation is known as CAPP engineering or Charge-Aromaticity Push-Pull.
- CAPP engineering or Charge-Aromaticity Push-Pull is known as CAPP engineering or Charge-Aromaticity Push-Pull.
- Another embodiment of the present invention includes methods of preparing nonlinear optic chromophores which comprise a stabilized radical of the general formula (I), the methods comprising: (i) providing a fused, polycyclic, optionally heteroatom-containing, ⁇ /-conjugated core having a first terminus and a second terminus, wherein the first terminus comprises a first tenninus moiety which is reactive with an 8 Atty Docket No.: 12583-00049- WO
- Another embodiment of the present invention includes nonlinear optical materials which comprise stabilized radicals of the general formula (I) or mixtures in accordance with various embodiments of the invention incorporated within a matrix material.
- Suitable matrix materials can include various polymers, solutions, glass and others.
- Suitable methods for incorporating a stabilized radical of the general formula (I) or mixtures thereof into a polymer matrix material include: combining the chromophore radical with the polymer; electric field poling of the chromophore radical/polymer mixture to acentrically align chromophores; followed by crosslinking, curing, and/or hardening the chromophore radical-containing polymer.
- the chromophore radical can be physically incorporated into a polymer to provide a composite.
- the chromophore radical can be covalently incorporated into the polymer by, for example, attachment as a side chain or crosslinking.
- the chromophore radical can be crosslinked to the polymer in more than one position, for example, a double-ended crosslinked
- Yet another embodiment of the present invention includes electro-optic devices which comprise a nonlinear optical material in accordance with various other embodiments of the present invention.
- Fig. 1 is a depiction of a phase modulator in accordance with an embodiment of the present invention
- FIG. 2 is a depiction of a testing procedure for evaluation of a phase modulator as shown in Fig. 1 ;
- Fig. 3 is an image of a photomask architecture layout for a wafer used in a phase modulator as shown in Fig. 1.
- Fig. 4 is a depiction of a degenerate four wave mixing (DFWM) testing procedure for evaluation of third-order NLO properties of thin film composites.
- DFWM degenerate four wave mixing
- chromophores as "PerkinamineTM NR(s)", for "nitro radical(s).”
- nitro radical is persistent radicals, stable under air-free conditions, we have found that a core amine functionality of these species is selectively oxidized to nitroxyl radicals which are stable under ambient conditions.
- any base can be employed in the electron accepting group ring closure reaction, but preferably the base is non-nucleophilic. It is important that the electron accepting group ring closure reaction is carried out under dry conditions. Thus, solvents employed, such as, for example, ethanol, should be dry. Preferably, the reaction is carried out under 1 1 Arty Docket No.: 12583-00049- WO
- the base is present during the electron accepting group ring closure reaction in stoichiometric excess.
- the electron accepting group ring closure reaction is carried out under an inert atmosphere.
- the base employed in the electron accepting group ring closure reaction can include non- nucleophilic bases, such as, for example, potassium fluoride, sodium acetate and sodium carbonate.
- Preferred bases include potassium fluoride, sodium acetate and sodium carbonate. The most preferred base is sodium carbonate.
- the electron accepting group ring closure reaction can be carried out above room temperature for any suitable period of time.
- the reaction may be carried out at 30 to 45 °C for a period of 3 to 4 hours.
- HPk + HPk Pk NR
- Pk stands for a neutral perkinamine, substituted with variable R spacer groups as described in the prior publications; and HPk is the protonated radical anion perkinamine NR.
- Perkinamine 1 (shown below), as described in US 2008/0139812 at Paragraph [0063], where each R (i.e. , "Sp") is a mesityl group, has an r 33 value which is about two times greater than that of a benchmark material synthesized by chemists at the University of Washington (Seattle) referred to as "CLD-1.”
- the inventive stabilized radical chromophore analogous to Perkinamine 1 has an r 33 value which is 700% that of perldnamine 1.
- the inventive stabilized radical chromophores are more polarizable than neutral perkinamines.
- the inventive stabilized radical chromophores can be characterized as chemically different from the neutral perkinamines of the prior publications in a variety of ways including mass spectra, electronic spectra, nuclear magnetic resonance spectra, electron spin resonance spectroscopy, and electrochemical behavior.
- Mass spectra of the inventive stabilized radical chromophores will exhibit a mass exactly one unit higher than a corresponding neutral perkinamine.
- the neutral perkinamines of the prior publications are diamagnetic and will exhibit conventional and assignable NMR spectra.
- the inventive stabilized radical chromophores of the present invention, as radicals, are paramagnetic.
- the inventive stabilized radical chromophores will not provide conventional and assignable NMR spectra, but rather only broad signals. 13 Atty Docket No.: 12583-00049-WO
- the neutral perkinamines of the prior publications are diamagnetic, they do not exhibit an electron spin resonance spectrum.
- the inventive stabilized radical chi mophores exhibit a strong ESR signal, characteristic of a f ee electron in a paramagnetic organic solid.
- the inventive stabilized radical chromophores can be facilely oxidized in a one-electron oxidation which is entirely reversible on the time-scale of cyclic voltammetry.
- halo includes fluoro, chloro, bromo or iodo.
- Preferred halo groups are fluoro, chloro and bromo.
- alkyl as used herein, unless otherwise indicated, includes saturated monovalent hydrocarbon radicals which may be straight, cyclic and/or branched. It is understood that for cyclic moieties at least three carbon atoms are required in said alkyl group. Atty Docket No.: 12583-00049-WO
- alkenyl as used herein, unless otherwise indicated, includes monovalent hydrocarbon radicals having at least one carbon-carbon double bond and which may be straight, cyclic and/or branched.
- alkynyl as used herein, unless otherwise indicated, includes monovalent hydrocarbon radicals having at least one carbon-carbon triple bond and which may be straight, cyclic and/or branched.
- alkoxy as used herein, unless otherwise indicated, includes O- alkyl groups wherein “alkyl” is as defined above.
- aryl as used herein, unless otherwise indicated, includes organic radicals derived from aromatic hydrocarbons by removal of one hydrogen, such as phenyl or naphthyl.
- heteroaryl includes organic radicals derived by removal of one hydrogen atom from a carbon atom in the ring of a heteroaromatic hydrocarbon, containing one or more heteroatoms independently selected from O, S, and N. Heteroaryl groups must have at least 5 atoms in their ring system and are optionally substituted independently with 0-2 halogen, trifluoromethyl, Ci-C 6 alkoxy, Ci-C 6 alkyl, or nitro groups.
- Non-aromatic heterocyclic groups include groups having only 4 atoms in their ring system, but aromatic heterocyclic groups must have at least 5 atoms in their ring system.
- An example of a 4 membered heterocyclic group is azetidinyl (derived from azetidine).
- An example of a 5 membered heterocyclic group is thiazolyl and an example of a 10 membered heterocyclic group is quinolinyl.
- Examples of non-aromatic heterocyclic groups are pyrrolidinyl, tetrahydrofuranyl,
- aromatic heterocyclic groups are pyridinyl, imidazolyl, pyrimidinyl, pyrazolyl, triazolyl, pyrazinyl, tetrazolyl, furyl, thienyl, isoxazolyl, thiazolyl, oxazolyl, isothiazolyl, pyrrolyl, quinolinyl, isoquinolinyl, indolyl, benzimidazolyl, benzofuranyl, cinnolinyl, indazolyl, indolizinyl, phthalazinyl, pyridazinyl, triazinyl, isoindolyl, pteridinyl, purinyl, oxadiazolyl, thiadiazolyl, furazanyl, benzofurazanyl, benzothiophenyl, benzothiazolyl, benzoxazolyl, quinazolinyl, quinox
- a group derived from pyrrole may be C-attached or N-attached where such is possible.
- a group derived from pyrrole may be pyrrol- 1 -yl (N-attached) or pyrrol-3-yl (C-attached).
- saturated cyclic group as used herein, unless otherwise indicated, includes non-aromatic, fully saturated cyclic moieties wherein alkyl is as defined above.
- salts of acidic or basic groups which may be present in the compounds of the invention.
- the compounds of the invention that are basic in nature are capable of forming a wide variety of salts with various inorganic and organic acids.
- the acids that may be used to prepare pharmaceutically acceptable acid addition salts of such basic compounds of the invention are those that form non-toxic acid addition salts, i.e., salts containing pharmacologically acceptable anions, such as the hydrochloride,
- Those compounds of the invention that are acidic in nature are capable of forming base salts with various pharmacologically acceptable cations.
- Examples of such salts include the alkali metal or alkaline earth metal salts and particularly the sodium and potassium salts.
- solvate includes a compound of the invention or a salt thereof, that further includes a stoichiometric or non-stoichiometric amount of a solvent bound by non-covalent intermolecular forces.
- hydrate refers to a compound of the invention or a salt thereof, that further includes a stoichiometric or non-stoichiometric amount of water bound by non-covalent intermolecular forces.
- the subject invention also includes isotopically-labeled compounds, and the commercially acceptable salts thereof, which are identical to those recited in the various formulae described herein but for the fact that one or more atoms are replaced by an atom having an atomic mass or mass number different from the atomic mass or mass number usually found in nature.
- isotopes that can be incorporated into compounds of the invention include isotopes of hydrogen, carbon, nitrogen, oxygen, sulfur, fluorine and chlorine, such as 2 H, 3 H, 13 C, 14 C, 15 N, 18 0, 17 0, 35 S, 18 F, and 36 C1, respectively.
- Tritiated, i.e., 3 H, and carbon-14, i.e., 14 C, isotopes are particularly preferred for their ease of preparation and detectability. Further, substitution with heavier isotopes such as deuterium, i.e., 2 H, can afford certain advantages resulting from greater stability.
- Isotopically labeled compounds of Formula I of this invention can generally be prepared by carrying out the procedures disclosed in the Schemes and/or in the Examples and Preparations below, by substituting a readily available isotopically labeled reagent for a non-isotopically labeled reagent.
- the term "nonlinear optic chromophore” refers to molecules or portions of a molecule that create a nonlinear optic effect when irradiated with light.
- the chromophores are any molecular unit whose interaction with light gives rise to the nonlinear optical effect. The desired effect may occur at resonant or nonresonant wavelengths.
- the activity of a specific chromophore in a nonlinear optic material is stated as its hyper-polarizability, which is directly related to the molecular dipole moment of the chromophore.
- the inventive stabilized radical NLO chromophores of the present invention are useful structures for the production of NLO effects.
- the first-order hyperpolarizability ( ⁇ ) is one of the most common and useful NLO properties. Higher-order hyperpolarizabilities are useful in other
- a material such as a compound or polymer
- a nonlinear optic chromophore with first-order hyperpolar character the following test may be performed. First, the material in the form of a thin film is placed in an electric field to align the dipoles. This may be performed by sandwiching a film of the material between electrodes, such as indium tin oxide (ITO) substrates, gold films, or silver films, for example.
- ITO indium tin oxide
- an electric potential is then applied to the electrodes while the material is heated to near its glass transition (T g ) temperature. After a suitable period of time, the temperature is gradually lowered while maintaining the poling electric field.
- the material can be poled by corona poling 18 Atty Docket No.: 12583-00049- WO
- the relationship between the change in applied electric potential versus the change in the refractive index of the material may be represented as its EO coefficient r 33. This effect is commonly referred to as an electro-optic, or EO, effect.
- Devices that include materials that change their refractive index in response to changes in an applied electric potential are called electro-optical (EO) devices.
- the second-order hyperpolarizability ( ⁇ ) or third-order susceptibility ( ⁇ (3) ), are the normal measures of third-order NLO activity. While there are several methods used to measure these properties, degenerate four- wave mixing (DFWM) is very common. See C. W. Thiel, "For- wave Mixing and Its Applications,"
- Fig. 4 a method of evaluating third-order NLO properties of thin films, known in the art as Degenerate Four Wave Mixing (DFWM), is depicted.
- DFWM Degenerate Four Wave Mixing
- Beam 3 is a weaker, slightly delayed beam at the same wavelength as Beams 1 and 2.
- Beam 4 is the resulting product of the wave mixing, diffracted off of the transient holographic grating, produced by interferences of beams 1 and 2 in the NLO material of the film.
- Beam 3 can be a "control" beam at a telecom wavelength which produces a "signal" beam at a frequency not absorbed by the NLO material.
- nonlinear optic chromophores according to the present invention comprise a stabilized radical of the eneral formula (I):
- D represents an organic electron donating group
- A represents an organic electron accepting group having an electron affinity greater than the electron affinity of D
- ⁇ represents a fused, offset, polycyclic, optionally heteroatom-containing, pi- conjugated core
- A is bound to the core at two atomic positions on the core such that at least a portion of A forms a ring fused to the core
- D is bound to the core at two atomic positions on the core other than the two atomic positions at which A is bound to the core such that at least a portion of D forms a ring fused to the core
- the stabilized radical is optionally substituted with one or more pendant spacer groups.
- Examples of organic electron accepting groups suitable for incorporation into the chromophores of Formula (I) include, but are not limited to, the following structures, wherein the dashed lines represent the two atomic positions at which A forms a ring fused to the core:
- each Acc independently represents an electron accepting moiety, R represents a pendant spacer group, and 0 ⁇ n ⁇ 5.
- Each Acc preferably independently represents an electron accepting moiety selected from CN, N0 2 , and S0 2 R.. Most preferably, each Acc represents N0 2 .
- D can represent any organic electron donating group, so long as D is bound to the core at two atomic positions on the core other than the two atomic positions at which A is bound to the core such that at least a portion of D forms a ring fused to the core.
- Examples of organic electron donating groups suitable for incorporation into the chromophores of Formula (I) include, but are not limited to, the following structures, wherein the dashed lines represent the two atomic positions at which D forms a ring fused to the core:
- each R independently represents a pendant spacer group.
- ⁇ represents a fused, offset, polycychc, optionally heteroatom-containing
- Core structures in accordance with the various embodiments of the present invention are "jo/ ' -conjugated" meaning that the core structure contains at least two double bonds separated by a single bond, and preferably more than two double bonds each separated by a single bond.
- PNR2-US embodiments of the present invention are polycyclic and fused meaning that the core structure contains at least two rings which share two atoms between the two rings.
- Preferred core structures ⁇ in accordance with the present invention include those of the eneral formulae Ila, lib, lib' and lie:
- each Z independently represents N, CH or CR; wherein R represents a pendant spacer group; and wherein each dashed line independently represents a chemical bond to another atom within the chromophore; and Q represents O, S, NH or NR.
- offset refers to a geometric (as opposed to optic) nonlinear character of the core structure.
- offset is used herein to refer to the geometric nonlinear character of the structures to avoid confusion with the optical nonlinear properties of the chromophores.
- offset refers to a polycyclic, fused structure which contains a dispositional shift in the alignment of the 24 Atty Docket No.: 12583-00049-WO
- Additional core structures ⁇ in accordance with the present invention include those which contain more than one of the structures of formulae Ila, lib, lib' and/or lie, which may either be bound directly to one another to form a linking ring or Arty Docket No.: 12583-00049-WO
- PNR2-US may be bound to one another by an additional optionally polycyclic, optionally heteroatom-containing ring structure.
- Core structures in accordance with the various embodiments of the present invention can further comprise a first bridging group such that the two atomic positions at which D is bound are part of the first bridging group
- Core structures in accordance with the various embodiments of the present invention can further comprise a
- Core structures in accordance with the various embodiments of the present invention can further comprise a first bridging group and
- Nonlinear optic chromophores according to the present invention can further comprise one or more pendant spacer groups bound to the core, first bridging group, second bridging group, electron donating group and/or electron accepting group.
- Pendant spacer groups in accordance with the present invention are generally nonreactive moieties which extend outward from the chromophore and create steric hindrance (i.e., "spacing") between two or more of the chromophore molecules in a material containing the chromophores, and thus serve to prevent aggregation during and after poling.
- Suitable pendant spacer groups R can include spacer systems of the
- -NR 6 C(0)OR 5 -NR 6 S0 2 R 5 , -S0 2 NR 5 R 6 , -NR 6 C(0)R 5 , -C(0)NR 5 R 6 , -NR 5 R 6 , -S(0) j R 7 wherein j is an integer ranging from 0 to 2, -NR 5 (CR 6 R 7 ) t OR 6 , -(CH 2 ) t (C 6 -Ci 0 aryl), -SO 2 (CH 2 ) t (C 6 -C 10 aryl), -S(C3 ⁇ 4) t (C 6 -C 10 aryl), -O(CH 2 ) t (C 6 -C 10 aryl), -(CH 2 ) t (4-10 membered heterocyclic), and -(CR 6 R 7 ) m OR 6 , wherein m is an integer from 1 to 5 and t is an integer from 0 to 5; with the proviso that when R 4 is hydrogen Q
- Additional suitable pendant spacer groups R can include hydrogen, halo,
- Particularly preferred pendant spacer groups R include mesityl groups, 2- ethylhexyl groups, wo-propyl groups, cyclohexyl groups, halogenated aromatics ⁇ e.g., dihalophenyls, and in particular, 3,5-dichlorophenyl), and -(CH 2 ) t S02(CH 2 ) t (C 6 -Cio aryl) groups, such as groups of the formula:
- Methods of preparing nonlinear optic chromophores which comprise a stabilized radical of the general formula (I), in accordance with the various embodiments of the present invention, include: (i) providing a fused, polycyclic, optionally heteroatom- containing, (/-conjugated core having a first terminus and a second terminus, wherein the first terminus comprises a first terminus moiety which is reactive with an electron donating group and wherein the second terminus comprises a second terminus moiety which is reactive with an electron accepting group; (ii) reacting the core with an electron donating group D such that the first terminus moiety and the electron donating group D undergo ring closure such that the electron donating group D is fused to the core at two atomic positions on the core to form a core-D intermediate; and (iii) subsequently reacting the core-D intermediate with an electron accepting group A, in the presence of a base, such that the second terminus moiety and the electron accepting group A undergo ring closure such that the electron donating
- the present invention also includes nonlinear optical materials comprising a nonlinear optic chromophore comprising a stabilized radical of the general formula (I) Atty Docket No.: 12583-00049- WO
- Suitable matrix materials can include polymers, such as, for example: (PMMA); polyimides; polyamic acid; polystyrenes; poly(urethane)s (PU); and amorphous polycarbonates (APC).
- the matrix material comprises a poly(methylmethacrylate).
- the nonlinear optic chromophore comprising a stabilized radical of the general formula (I) is generally incorporated within the matrix material at a loading of 1 % to 50 % by weight, based on the entire nonlinear optical material, more preferably at a loading of 2 % to 35 % by weight, and most preferably at a loading of 3 % to 35 % by weight.
- Nonlinear optical materials in accordance with various embodiments of the invention can be in the form of solid thin films, optionally disposed on a surface of another material.
- nonlinear optical materials according to the present invention include all existing known forms of such materials, but wherein the optical chromophore incorporated within the matrix material comprises a stabilized radical of the general formula (I).
- Electro-optic device and/or system embodiments of the present invention include phased array radar, satellite and fiber telecommunications, cable television (CATV), optical gyroscopes for application in aerial and missile guidance, electronic counter measure systems (ECM) systems, backplane interconnects for high-speed computation, ultrafast analog-to-digital conversion, land mine detection, radio frequency photonics, spatial light modulation and all-optical (light-switching-light) signal processing, wherein such devices include a nonlinear optical material according to the present invention.
- CCM electronic counter measure systems
- nonlinear optic chromophores which essentially covers the entire UV-visable-near infrared region from 250 nm to 1800nm at high extinction coefficient, indicates that nonlinear optical Atty Docket No.: 12583-00049- WO
- PNR2-US materials according to various embodiments of the present invention can also be used in solar conversion and photovoltaic devices.
- This device can be used for optical switching, parametric amplification and other all- optical applications of the third-order hyperpolarizability.
- a non linear optical chromophore according to an embodiment of the present invention was synthesized according to the following reaction scheme:
- each R represented a mesityl (i.e. ,
- the ring-closed product of the final step is thought to be produced in two stages.
- the first step constitutes a nucleophilic attack by the primary amine on the chloro group of the picryl chloride.
- This intermediate is then attacked by the remaining secondary, substituted, amino group to produce the product shown.
- the nitro group can react with a carbon atom on the aromatic ring below the site of the previous attack. This produces the structure shown below, referred to herein as an "iso"Perkinamine Nitro Radical:
- each spacer (R) group is a cyclohexyl group.
- Bis-2,6- dicyclohexylaminonaphthalene is prepared by reaction of 2,6-dihydroxynaphthalene and cyclohexylamine, wherein R-NH 2 represents cyclohexylamine, and the remainder of the reactions of the general scheme shown in Synthesis Example 1 are carried out. The final step is described below.
- EPR DMSO: strong doublet of triplets centered at 3365 G. Atty Docket No.: 12583
- a non linear optical chromophore according to an embodiment of the resent invention is synthesized according to the following reaction scheme:
- a non linear optical chromophore according to an embodiment of the present invention is synthesized according to the following reaction scheme:
- PNR exhibits a mass exactly one unit higher than the similar, but un- radicalized, chromophore described in US 2008/0139812 at paragraph [0063] with R representing mesityl ("PerkinamineTM 1"), thus indicating the presence of a protonated radical anion.
- PerWnamineTM 1 is a molecule with strong charge transfer transition at about 950 nm in acetonitrile. It is very solvatochiOmically shifted by changing solvent polarity. PNR is also solvatochromic, but its charge transfer band is in the mid-infrared region, at significantly lower energy than Perkinamine 1. PNR exhibits a strong charge transfer transition at about 1200 nm in acetonitrile.
- Nuclear magnetic resonance spectrum Perkinamine 1 has a conventional and assignable NMR spectrum. PNR does not provide a spectrum, only broad signals. The lack of a conventional and assignable NMR spectrum is presumably because PNR is paramagnetic which is evidence of its radical character.
- Electron spin resonance (“ESR”) spectroscopy Perkinamine 1 does not show an ESR spectrum, presumably because it is diamagnetic. Solid PNR shows a strong ESR signal at g ⁇ 2.0, characteristic of a free electron in a paramagnetic organic solid. In solution (DMSO) the signal is a doublet of triplets characteristic of nitroxly radicals. Spin counting versus a standard indicated the sample was 20-40% radical in nature, with variability occurring batch to batch.
- Electrochemical behavior PNR can be facilely oxidized at +0.25 volts versus an Ag/Ag + electrode. It is a one-electron oxidation and it is entirely reversible on Atty Docket No.: 12583-00049- WO
- Perkinamine 1 (PNR2-US) the time-scale of cyclic voltammetry. Perkinamine 1 can be reduced at about -0.1 v versus the Ag/Ag + electrode, but the process is not reversible.
- the ⁇ 3) of fused silica is well known, and can be used to calculate the ⁇ * ⁇ 3 ⁇ * of the PNR sample to be 2600 times that of fused silica, or 4 x 10 "19 m 2 V 2 . Knowing the number density of PNR molecules in the thin film sample, the molecular value of ⁇ can be determined to be 3000 x 10 "48 m 5 /V 2 . This value is about 100 times larger than other small organic molecules and shows the efficacy of the PNR family for third-order NLO activity. The optical response was found to occur within the picosecond pulse width of the laser used for the experiment.
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EP11806013.6A EP2646873B9 (en) | 2010-11-30 | 2011-11-30 | Stable free radical chromophores and mixtures thereof, processes for preparing the same, nonlinear optic materials, and uses thereof in nonlinear optical applications |
AU2011336622A AU2011336622A1 (en) | 2010-11-30 | 2011-11-30 | Stable free radical chromophores and mixtures thereof, processes for preparing the same, nonlinear optic materials, and uses thereof in nonlinear optical applications |
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CA2818849A CA2818849C (en) | 2010-11-30 | 2011-11-30 | Stable free radical chromophores and mixtures thereof, processes for preparing the same, nonlinear optic materials, and uses thereof in nonlinear optical applications |
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US11614670B2 (en) * | 2018-09-17 | 2023-03-28 | Lightwave Logic, Inc. | Electro-optic polymer devices having high performance claddings, and methods of preparing the same |
US11921401B2 (en) | 2020-06-25 | 2024-03-05 | Lightwave Logic, Inc. | Nonlinear optical chromophores having a diamondoid group attached thereto, methods of preparing the same, and uses thereof |
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CA3239292A1 (en) | 2021-12-10 | 2023-06-15 | Lightwave Logic, Inc. | Nonlinear optical chromophores having tetrahydrocarbazole donor groups, lyotropic compositions containing the same, and methods of poling such compositions |
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