Side chain liquid crystalline polymers as nonlinear optical materials
US5207952A · kind A · utility
25Cited by
26References
40Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 1991 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Apr 2, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/586
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Side chain liquid crystalline polymers which exhibit nonlinear optical responses, particularly second and third harmonic generation, are presented together with methods for making them. These polymers derive their nonlinear optical behavior from selective pendant groups that are attached via spacers to the backbone. Several embodiments having chiral structures are subject to efficient dipolar and molecular alignment by electric field poling. The methods disclosed for making these polymers are polycondensation, graft polymerization, and copolycondensation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.