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EP0271730A2
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Side chain liquid crystalline polymers exhibiting nonlinear optical properties
Assignee: CNA Holdings LLC
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Filing: 1987-11-18
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Granted: —
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Expires: 2007-11-18
Abstract
Abstract This invention provides novel sidechain liquid crystalline polymers which exhibit nonlinear response, and which have utility as a transparent nonlinear optical component in optical light switch and light modulator devices. An invention sidechain liquid crystalline polymer is illustrated by poly[4-(8-hydroxyoctyloxybenzylideneamino)-4ʹ-nitrostilbene methacrylate]:
Inventors
- 👤 Ronald N. De Martino
- 👤 Hyun-Nam Yoon
- 👤 James B. Stamatoff
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 11:37
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/38; C09K19/3833; C09K19/3842; C09K19/3852; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/36; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/3617
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
57 words
A side chain liquid crystalline polymer characterized by a recurring monomeric unit corresponding to the formula: where m is an integer of at least 3; n is an integer between about 1-25; R is hydrogen or a C₁-C₄ alkyl substituent; X is an electron-donating substituent; Z is an electron-withdrawing substituent; and Y is a substituent selected from
Claim 2
Dependent Claim
57 words
A side chain liquid crystalline polymer characterized by a recurring monomeric unit corresponding to the formula: where m is an integer of at least 3; n is an integer between about 1-25; R is hydrogen or a C₁-C₄ alkyl substituent; X is an electron-donating substituent; Z is an electron-withdrawing substituent; and Y is a substituent selected from
Claim 3
Dependent Claim
23 words
A liquid crystalline polymer in accordance with claim 1 wherein X is a -NR¹- substituent, and R¹ is hydrogen or a methyl group.
Claim 4
Dependent Claim
15 words
A liquid crystalline polymer in accordance with claim 1 wherein X is a -O- substituent.
Claim 5
Dependent Claim
15 words
A liquid crystalline polymer in accordance with claim 1 wherein X is a -S- substituent.
Claim 6
Dependent Claim
15 words
A liquid crystalline polymer in accordance with claim 1 wherein Z is a -NO₂- substituent.
Claim 7
Dependent Claim
15 words
A liquid crystalline polymer in accordance with claim 1 wherein Z is a -CN- substituent.
Claim 8
Dependent Claim
15 words
A liquid crystalline polymer in accordance with claim 1 wherein Z is a -CF₃- substituent.
Claim 9
Dependent Claim
24 words
A liquid crystalline polymer in accordance with claim 1 wherein the recurring monomeric unit comprises at least about 60 weight percent of the polymer.
Claim 10
Dependent Claim
36 words
A liquid crystalline polymer in accordance with claim 1 wherein the mesogenic sidechains exhibit a second order nonlinear optical susceptibility β of at least about 1 x 10⁻³⁰ esu as measured at 1.91 µm excitation wavelength.
Claim 11
Dependent Claim
21 words
A liquid crystalline polymer in accordance with claim 1 wherein the polymer has a weight average molecular weight between about 1000-500,000.
Claim 12
Dependent Claim
17 words
A liquid crystalline polymer in accordance with claim 1 wherein the polymer exhibits a thermotropic smectic mesophase.
Claim 13
Dependent Claim
53 words
A thermotropic side chain liquid crystalline polymer characterized by a recurring monomeric unit corresponding to the formula: where m¹ is an integer of at least 5; n¹ is an integer between about 2-20; R¹ is hydrogen or a methyl group; X¹ is -NR¹-, -O- or -S-; and Z¹ is -NO₂, -CN or -CF₃.
Claim 14
Dependent Claim
53 words
A thermotropic side chain liquid crystalline polymer characterized by a recurring monomeric unit corresponding to the formula: where m¹ is an integer of at least 5; n¹ is an integer between about 2-20; R¹ is hydrogen or a methyl group; X¹ is -NR¹-, -O- or -S-; and Z¹ is -NO₂, -CN or -CF₃.
Claim 15
Dependent Claim
53 words
A thermotropic side chain liquid crystalline polymer characterized by a recurring monomeric unit corresponding to the formula: where m¹ is an integer of at least 5, n¹ is an integer between about 2-20; R¹ is hydrogen or a methyl group; X¹ is -NR¹-, -O- or -S-; and Z¹ is -NO₂, -CN or -CF₃.
Claim 16
Dependent Claim
53 words
A thermotropic side chain liquid crystalline polymer characterized by a recurring monomeric unit corresponding to the formula: where m¹ is an integer of at least 5, n¹ is an integer between about 2-20; R¹ is hydrogen or a methyl group; X¹ is -NR¹-, -O- or -S-; and Z¹ is -NO₂, -CN or -CF₃.
Claim 17
Dependent Claim
53 words
A thermotropic side chain liquid crystalline polymer characterized by a recurring monomeric unit corresponding to the formula: where m¹ is an integer of at least 5; n¹ is an integer between about 2-20; R¹ is hydrogen or a methyl group; X¹ is -NR¹-, -O- or -S-; and Z¹ is -NO₂, -CN or -CF₃.
Claim 18
Dependent Claim
53 words
A thermotropic side chain liquid crystalline polymer characterized by a recurring monomeric unit corresponding to the formula: where m¹ is an integer of at least 5; n¹ is an integer between about 2-20; R¹ is hydrogen or a methyl group; X¹ is -NR¹-, -O- or -S-; and Z¹ is -NO₂, -CN or -CF₃.
Claim 19
Dependent Claim
53 words
A thermotropic side chain liquid crystalline polymer characterized by a recurring monomeric unit corresponding to the formula: where m¹ is an integer of at least 5; n¹ is an integer between about 2-20; R¹ is hydrogen or a methyl group; X¹ is -NR¹-, -O- or -S-; and Z¹ is -NO₂, -CN or -CF₃.
Claim 20
Dependent Claim
53 words
A thermotropic side chain liquid crystalline polymer characterized by a recurring monomeric unit corresponding to the formula: where m¹ is an integer of at least 5; n¹ is an integer between about 2-20; R¹ is hydrogen or a methyl group; X¹ is -NR¹-, -O- or -S-; and Z¹ is -NO₂, -CN or -CF₃.
Claim 21
Dependent Claim
65 words
A transparent nonlinear optical medium comprising a thermotropic sidechain liquid crystalline polymer which is characterized by a recurring monomeric unit corresponding to the formula: where m is an integer of at least 3; n is an integer between about 1-25; R is hydrogen or a C₁-C₄ alkyl substituent; X is an electron-donating substituent; Z is an electron-withdrawing substituent; and Y is a substituent selected from
Claim 22
Dependent Claim
65 words
A transparent nonlinear optical medium comprising a thermotropic sidechain liquid crystalline polymer which is characterized by a recurring monomeric unit corresponding to the formula: where m is an integer of at least 3; n is an integer between about 1-25; R is hydrogen or a C₁-C₄ alkyl substituent; X is an electron-donating substituent; Z is an electron-withdrawing substituent; and Y is a substituent selected from
Claim 23
Dependent Claim
21 words
A nonlinear optical medium in accordance with claim 16 wherein the medium is noncentrosymmetric and exhibits second order nonlinear optical response.
Claim 24
Dependent Claim
21 words
A nonlinear optical medium in accordance with claim 16 wherein the medium is centrosymmetric and exhibits third order nonlinear optical response.
Claim 25
Dependent Claim
18 words
A nonlinear optical medium in accordance with claim 16 wherein the medium has an external field-induced molecular orientation.
Claim 26
Dependent Claim
22 words
A nonlinear optical medium in accordance with claim 16 wherein the medium contains a guest organic compound which exhibits nonlinear optical response.
Claim 27
Dependent Claim
31 words
A nonlinear optical medium in accordance with claim 16 wherein the medium contains a guest organic compound corresponding to the formula: where X, R, Y and Z are as previously defined.
Claim 28
Dependent Claim
79 words
A light switch or light modulator device with an organic nonlinear optical component consisting of a transparent solid medium comprising a thermotropic sidechain liquid crystalline polymer which is characterized by a recurring monomeric unit corresponding to the formula: where m is an integer of at least 3; n is an integer between about 1-25; R is hydrogen or a C₁-C₄ alkyl substituent; X is an electron-donating substituent; Z is an electron-withdrawing substituent; and Y is a substituent selected from
Claim 29
Dependent Claim
79 words
A light switch or light modulator device with an organic nonlinear optical component consisting of a transparent solid medium comprising a thermotropic sidechain liquid crystalline polymer which is characterized by a recurring monomeric unit corresponding to the formula: where m is an integer of at least 3; n is an integer between about 1-25; R is hydrogen or a C₁-C₄ alkyl substituent; X is an electron-donating substituent; Z is an electron-withdrawing substituent; and Y is a substituent selected from
Claim 30
Dependent Claim
21 words
A device in accordance with claim 22 wherein the solid medium contains a guest organic compound which exhibits nonlinear optical response.
Claim 31
Dependent Claim
30 words
A device in accordance with claim 22 wherein the solid medium contains a guest organic compound corresponding to the formula: where X, R, Y and Z are as previously defined.
Claim 32
Dependent Claim
17 words
A device in accordance with claim 22 wherein the solid medium has an external field-induced molecular orientation.
Claim 33
Dependent Claim
41 words
An acrylic ester composition corresponding to the formula: where n is an integer between about 1-25; R is hydrogen or a C₁-C₄ alkyl substituent; X is an electron-donating substituent; Z is an electron-withdrawing substituent; and Y is a substituent selected from
Claim 34
Dependent Claim
41 words
An acrylic ester composition corresponding to the formula: where n is an integer between about 1-25; R is hydrogen or a C₁-C₄ alkyl substituent; X is an electron-donating substituent; Z is an electron-withdrawing substituent; and Y is a substituent selected from
References Cited (Backward Citations)
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