Polymeric fluorescent substance and organic electroluminescence devices using the same
US5589320A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1994 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Jul 14, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A polymeric fluorescent substance which is soluble, has a number-average molecular weight of 10.sup.3 -10.sup.7 and contains three different repeating units --Ar--CH.dbd.CH--, wherein Ar is a arylene group having 6-20 carbon atoms, a heterocyclic compound group having 4-20 carbon atoms or a divalent group --Ar.sub.1 --X.sub.1 --R--X.sub.2,--Ar.sub.2. At least one of the repeating units has at least one substituent selected from alkyl, alkoxy and alkylthio groups having 2-22 carbon atoms, aryl and aryloxy groups having 6-60 carbon atoms and heterocyclic compound groups having 4-60 carbon atoms. Ar.sub.1 and Ar.sub.2 are each an arylene group having 6-20 carbon atoms or a heterocyclic compound group having 4-20 carbon atoms and may contain at least one substituent selected from alkyl, alkoxyl and alkylthio groups having 2-22 carbon atoms, aryl and aryloxy groups having 6-60 carbon atoms and heterocyclic compound groups having 4-60 carbon atoms. R is a hydrocarbon or heterocyclic compound group having 1-22 carbon atoms. X.sub.1 and X.sub.2 independently represent --O--, --S--, --COO-- or --OCO--.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.