Polymer fluorescent substance and organic electroluminescence device
US6207301A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1997 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Aug 18, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A polymeric fluorescent substance having visible fluorescence in a solid state and a polystyrene-reduced number-average molecular weight of 10.sup.3 to 10.sup.7, which contains at least one repeating unit represented by the following formula (1), EQU --Ar.sub.1 --CR.sub.1.dbd.CR.sub.2 -- (1) wherein the sum of the repeating unit is from 10 to 100 mol % of the total number of the repeating units, Ar.sub.1 represents an arylene group having 4 to 20 carbon atoms taking part in conjugated bonds and containing at least one substituent represented by the following formula (2) as a nuclear substituent, or a heterocyclic compound group, having 4 to 20 carbon atoms taking part in conjugated bonds, and containing at least one substituent represented by the following formula (2) as a nuclear substituent; and R.sub.1 and R.sub.2 independently represent a group selected from the group consisting of hydrogen, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, a heterocyclic compound group having 4 to 20 carbon atoms and a cyano group, EQU --(X).sub.m --(CH.sub.2).sub.n --Ar.sub.2 (2) wherein Ar.sub.2 represents a group selected from the group consisting of an …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.