Polymeric fluorescent substance and organic electroluminescence

Details Polymeric fluorescent substance and organic electroluminescence Polymeric fluorescent substance and organic electroluminescence

1994-07-14

1996-12-31

Acquah, Samuel A.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making named article

528101, 528104, 257 40, 313504, 430313, G03C 500

Patent

active

055893201

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--.

REFERENCES:
patent: 5247190 (1993-09-01), Friend et al.
patent: 5317169 (1994-05-01), Nakano et al.
patent: 5328809 (1994-07-01), Holmes et al.
"Electroluminescence from Phenylenevinylene-based Polymer Blends", by Vestweber et sl., Advanced Materials for optics and electronics, vol. 2, No. 4, Jul. 1993, pp. 197-204.

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