2,5-linked polyfluorenes for optoelectronic devices
US7635792B1 · kind B1 · utility
40Cited by
12References
23Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 14, 2008 |
| Grant date | Dec 22, 2009 |
| Priority date | — |
| Expiry date | Oct 14, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2211/1425
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Polyfluorene polymers and copolymers having substantial amounts (10-100%) of fluorenes coupled at the 2 and 5 positions of fluorene are useful as active layers in OLED devices where triplet energies >2.10 eV are required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.