US5290824A
Expired / Lapsed
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Photocrosslinked second order nonlinear optical polymers
Assignee: University of Massachusetts Lowell
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Filing: 1992-05-12
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Granted: 1994-03-01
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Expires: 2012-05-12
Abstract
Abstract A novel photocrosslinkable polymeric system has been developed for processing into films having stable second-order nonlinear optical properties. In the present system, polymers bearing photo-crosslinkable chromophores, such as polyvinylcinnamate and are reacted with appropriately designed nonlinear optical molecules with the cinnamate or other photocrosslinkable functionalities for photocrosslinking at one, two or more points. The system can be poled and photocrosslinked in the poled state to yield a material with stable optical nonlinearity and large electro-optic coefficients.
Inventors
- 👤 Braja K. Mandal
- 👤 Sukant K. Tripathy
- 👤 Jan-Chuan Huang
- 👤 Jayant Kumar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:32
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/0005; G03F7/001; C; C08; C08F; C08F8/00; C08F8/14; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/3617; G03F7/004; G03F7/038; G03F7/0388; C08F2810/00; C08F2810/30; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
112 words
A method of forming a crosslinked nonlinear optical polymer, comprising the steps of: a) forming a solution of, i) a nonlinear optical component which includes at least two photosensitive functional groups, and ii) a host polymer component which includes a plurality of photosensitive functional groups; b) exposing the solution to an electric field which causes poling of the nonlinear optical component; and c) exposing the solution to sufficient electromagnetic radiation to cause the photosensitive functional groups of the host polymer component to react with the photosensitive functional groups of the nonlinear optical component to cause the nonlinear optical component to crosslink the host polymer component, thereby forming a photocrosslinked nonlinear optical polymer.
Claim 2
Independent Claim
112 words
A method of forming a crosslinked nonlinear optical polymer, comprising the steps of: a) forming a solution of, i) a nonlinear optical component which includes at least two photosensitive functional groups, and ii) a host polymer component which includes a plurality of photosensitive functional groups; b) exposing the solution to an electric field which causes poling of the nonlinear optical component; and c) exposing the solution to sufficient electromagnetic radiation to cause the photosensitive functional groups of the host polymer component to react with the photosensitive functional groups of the nonlinear optical component to cause the nonlinear optical component to crosslink the host polymer component, thereby forming a photocrosslinked nonlinear optical polymer.
Claim 3
Dependent Claim
36 words
A method of claim 1 wherein the nonlinear optical component includes a nonlinear optical compound having an organic moiety, an electron-donating group bonded to the organic moiety, and an electronic-accepting group bonded to the organic moiety.
Claim 4
Dependent Claim
14 words
A method of claim 2 wherein the organic moiety includes an aromatic ring structure.
Claim 5
Dependent Claim
28 words
A method of claim 2 wherein the electron-donating group of the nonlinear optical molecule is selected from the group consisting of amine, ethylamine, methoxy and ethoxy functional groups.
Claim 6
Dependent Claim
29 words
A method of claim 4 wherein the electron-accepting group of the nonlinear optical molecule is selected from the group consisting of nitro, nitroso, cyano and pyridinium salt functional groups.
Claim 7
Dependent Claim
26 words
A method of claim 5 wherein the photosensitive functional groups of the nonlinear optical component are selected from the group consisting of cinnamates, styrylacrylates and chalconeacrylates.
Claim 8
Dependent Claim
15 words
A method of claim 6 wherein the nonlinear optical molecule includes an extended π-conjugated moiety.
Claim 9
Dependent Claim
24 words
A method of claim 7 wherein the extended π-conjugated moiety is selected from the group consisting of stilbene dyes, azomethine dyes and diazo dyes.
Claim 10
Dependent Claim
16 words
A method of claim 8 wherein the photosensitive functional groups include a photoreactive carbon-carbon double bond.
Claim 11
Dependent Claim
13 words
A method of claim 9 wherein the host polymer component includes a homopolymer.
Claim 12
Dependent Claim
21 words
A method of claim 10 wherein the host polymer component is selected from the group consisting of polyvinylcinnamate, polyvinylstyrylacrylate and polyvinylchalcone.
Claim 13
Dependent Claim
11 words
A method of claim 11 further comprising a spectral sensitizing agent.
Claim 14
Dependent Claim
21 words
A method of claim 12 wherein the spectral sensitizing agent is selected from the group consisting of thiazolines, nitroaromatics and ketocoumarins.
Claim 15
Dependent Claim
13 words
A method of claim 9 wherein the host polymer component includes a copolymer.
References Cited (Backward Citations)
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