Patent ID: 6287713
Filing Date: 2001-09-11
Classification: C09K,H01L,Y10S

Abstract:
An electroluminescent assembly comprising a substrate, an anode, an electroluminescent element, and a cathode, wherein(1) at least one of the anode and/or cathode is transparent in the visible spectral region, and(2) the electroluminescent element contains a boron complex of an 8-hydroxyquinoline derivative and consists of one or more zones selected from the group consisting of a hole injection zone, a hole transport zone, an electroluminescent zone, an electron transport zone, and an electron injection zone arranged in the order listed, with the proviso that each said zone can optionally assume functions of other such zones such that the electro-luminescent element as a whole exhibits hole-injecting, hole-transporting, electroluminescent, electron-transporting, and electron-injecting functions, wherein the hole injection zone must be present and contains(i) an uncharged or cationic polythiophene having the formula (I) ##STR25##whereinQ.sup.1 and Q.sup.2 independently represent hydrogen or substituted or unsubstituted (C.sub.1 -C.sub.20)-alkyl, CH.sub.2 OH, or (C.sub.6 -C.sub.14)-aryl orQ.sup.1 and Q.sup.2 together represent --(CH.sub.2).sub.m --CH.sub.2 --, wherein m is 0 to 12, or (C.sub.6 -C.sub.14)-arylene, andn represents an integer from 2 to 10,000, or(ii) one or more uncharged or cationic polythiophenes of the formulas (Ia) and/or (Ib) ##STR26##whereinQ.sup.3 and Q.sup.4 independently represent hydrogen or a substituted or unsubstituted (C.sub.1 -C.sub.18)-alkyl, (C.sub.2 -C.sub.12)-alkenyl, (C.sub.3 -C.sub.7)-cycloalkyl, (C.sub.7 -C.sub.15)-aralkyl, (C.sub.6 -C.sub.10)-aryl, (C.sub.1 -C.sub.18)-alkyloxy, or (C.sub.2 -C.sub.18)-alkyloxy ester group,Q.sup.5 and Q.sup.6 independently represent hydrogen or a (C.sub.1 -C.sub.18)-alkyl, (C.sub.2 -C.sub.12)-alkenyl, (C.sub.3 -C.sub.7)-cycloalkyl, (C.sub.7 -C.sub.15)-aralkyl, (C.sub.6 -C.sub.10)-aryl, (C.sub.1 -C.sub.18)-alkoxy, or (C.sub.2 -C.sub.18)-alkyloxy ester group substituted by at least one sulphonate group, with the proviso that Q.sup.5 and Q.sup.6 cannot both be hydrogen, andn represents an integer from 2 to 10,000.