Bisphenylene-spirobifluorene compounds, method for synthesizing the same, and electroluminescence material and device having the same
US7057074B2 · kind B2 · utility
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Key dates
| Filing date | Aug 11, 2003 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Apr 8, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided are bisphenylene-spirobifluorene compounds, a method for synthesizing the same, and EL material and device having the same. The bisphenylene-spirobifluorene compound is defined by 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, X1 and X2 independently contains one or more elements selected from the group consisting of C, O, N, S, Si and Ge, and m and n are integers from 1 to 4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.