Fluorene based polymers and light emitting diodes fabricated with the same as light emitting material
US6835468B2 · kind B2 · utility
9Cited by
5References
12Claims
0Family size
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Key dates
| Filing date | Sep 4, 2001 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Sep 4, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A fluorene-based polymer of the following Formula (I) and electroluminescent devices using the same. wherein, R1, R2, R3 and R4 are same or different and represent hydrogen, aliphatic or alicyclic alkyl or alkoxy groups containing 1 to 22 carbon atoms, aryl or aryloxy group containing 6 to 18 carbon atoms, cyano, cyanoethyl, or an alkyl or aryl derivative of silicon, tin or germanium;X represents diacetylene, diethynyl aryl, divinylaryl group or a single bond; and n is an integer equal to or greater than 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.