Oligomer and polymer comprising triphenyl phosphine units
US7893172B2 · kind B2 · utility
0Cited by
9References
13Claims
0Family size
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Key dates
| Filing date | Aug 18, 2004 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Dec 18, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/631
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An oligomer or polymer comprising a first repeat unit and a second repeat unit that may be the same or different, the first repeat unit having formula (I): wherein each E independently represents optionally substituted nitrogen or optionally substituted phosphorus, with the proviso that at least one E is optionally substituted phosphorus; each Ar1, Ar2 and Ar3 is the same or different and independently represents an optionally substituted aryl or heteroaryl; n is 0-3; and in the case of unsubstituted nitrogen and phosphorus, the second repeat unit is directly conjugated to the first repeat unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.