Benzo (4,5) imidazo (2,1-a) isoindol-11-ones
US6562981B2 · kind B2 · utility
3Cited by
10References
2Claims
0Family size
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Key dates
| Filing date | Apr 30, 2002 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Apr 30, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition comprising (a) an effective amount of a guest chromophore embedded in a matrix of a host chromophore, or (b) a host chromophore and an effective amount of a guest chromophore both embedded in a polymer matrix, wherein the absorption spectrum of the guest chromophore overlaps with the fluorescence emission spectrum of the host chromophore, and wherein the host chromophore is selected from the group consisting of benzo [4,5]imidazo[2,1-a]isoindol-11-ones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.