Spirobifluorene compounds, electroluminescence polymer and electroluminescence element having the same
US6933063B2 · kind B2 · utility
6Cited by
3References
8Claims
0Family size
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Key dates
| Filing date | Nov 30, 2001 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Nov 30, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided are spirobifluorene compounds which can provide excellent processibility with improved solubility in organic solvents, an electroluminescence (EL) polymer obtained therefrom and an EL element having the same. The EL polymer comprising repeating units of the following formula: wherein R1 and R2 are identical or different and are independently a straight-chain or branched alkyl group having from 1 to 22 carbon atoms or an aryl group substituted by C1-C22 alkyl, and at least one of the R1 and R2 contains one or more atoms selected from the group consisting of O, N, S, Si and Ge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.