US4935292A
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Functionalized polymers for nonlinear optical application
Assignee: Northwestern University
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Filing: 1988-03-15
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Granted: 1990-06-19
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Expires: 2008-03-15
Abstract
Abstract A high performance nonlinear optical substrate comprising covalently linked chromophores within a glass film forming polymer, forms a single component polymeric frequency doubling material having a highly non-centrosymmetric architecture.
Inventors
- 👤 Tobin J. Marks
- 👤 Cheng Ye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:20
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/3616; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/261
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
99 words
A shaped article with a thin cross-section comprising a polymer composite having second order nonlinear optical properties and wherein the chromophore alignment within the polymer matrix enhances frequency doubling, said polymer composite being transparent, of low crystalline content, with a high glass transition temperature, and comprising the covalently linked structure of (PGR) n ; wherein P is a monomer of the basic polymer matrix, said monomer selected from the group consisting of polystyrene, polymethylmethacrylate, polyvinylalcohol, polyvinylchloride, polyvinylpyridine and polyvinylacetate; G is a reactive binding; and R is an organic non-centrosymmetric chromophore with delocalized conjugated π-electrons and a high β.
Claim 2
Dependent Claim
99 words
A shaped article with a thin cross-section comprising a polymer composite having second order nonlinear optical properties and wherein the chromophore alignment within the polymer matrix enhances frequency doubling, said polymer composite being transparent, of low crystalline content, with a high glass transition temperature, and comprising the covalently linked structure of (PGR) n ; wherein P is a monomer of the basic polymer matrix, said monomer selected from the group consisting of polystyrene, polymethylmethacrylate, polyvinylalcohol, polyvinylchloride, polyvinylpyridine and polyvinylacetate; G is a reactive binding; and R is an organic non-centrosymmetric chromophore with delocalized conjugated π-electrons and a high β.
Claim 3
Dependent Claim
19 words
The polymer of claim 1, wherein R is selected from the group consisting of alcohol chromophores and pyridinium chromophores.
Claim 4
Dependent Claim
15 words
The polymer of claim 1, wherein R is selected from the group consisting of: ##STR7##
Claim 5
Dependent Claim
71 words
A thin film having a thickness of between 0.3 and 7.0 micrometers, comprising a polymer composite having second harmonic generation, nonlinear optical properties and wherein the chromophore alignment within the polymer matrix enhances frequency doubling, comprising a structure selected from the group consisting of: ##STR8## where n>10, X is selected from the group consisting of chlorine and iodine, and R is an organic chromophore selected from the group consisting of: ##STR9##
Claim 6
Dependent Claim
71 words
A thin film having a thickness of between 0.3 and 7.0 micrometers, comprising a polymer composite having second harmonic generation, nonlinear optical properties and wherein the chromophore alignment within the polymer matrix enhances frequency doubling, comprising a structure selected from the group consisting of: ##STR8## where n>10, X is selected from the group consisting of chlorine and iodine, and R is an organic chromophore selected from the group consisting of: ##STR9##
Claim 7
Dependent Claim
18 words
The polymer of claim 4, wherein said chromophore is noncentrosymmetric, with delocalized conjugated electrons and a high β.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |