Fluorinated π-bridge second order nonlinear optical chromophores and electro-optic devices therefrom
US7109355B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 14, 2004 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Mar 13, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3617
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A nonlinear optical chromophore having the formula D-π-A, wherein π is a π bridge including a thiophene ring having oxygen atoms bonded directly to the 3 and 4 positions of the thiophene ring, D is a donor, A is an acceptor, and the oxygen atoms are further substituted with a fluorinated group comprising at least three fluorines is described. Some examples of fluorinated groups comprising at least three fluorine atoms are 2,2,2-trifluoroethyl; 2,2,3,3,3-pentafluoropropyl; 2,2,3,3,4,4,4-heptafluorobutyl; 2,2,3,3,4,4,5,5,5-octafluoropentyl; 3,3,4,4,-5,5,6,6,7,7,8,8,8-tridecafluoro-1-octyl; 2,2,3,3,4,4,5,5,6,6,7,7,8,8,8 -pentadecafluorooctyl; 1-trifluoromethyl-2,2,2-trifluoroethyl; 1-trifluoromethyl-2,2,3,3,3 -pentafluoropropyl; 2,3,4,5,6-pentafluorobenzyl; and (2,3,4,5,6-pentafluorophenyl)ethyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.