Patent ID: 6368731
Filing Date: 2002-04-09
Classification: C08G,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-aminoquinoline 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) â€ƒwherein Q1 and Q2 independently represent hydrogen or substituted or unsubstituted (C1-C20)-alkyl, CH2OH, or (C6-C14)-aryl or Q1 and Q2 together represent â€”(CH2)mâ€”CH2â€”, wherein m is 0 to 12, or (C6-C14)-arylene, and n represents an integer from 2 to 10,000, or (ii) one or more uncharged or cationic polythiophenes of the formulas (Ia) and/or (Ib) â€ƒand/or wherein Q3 and Q4 independently represent hydrogen or a substituted or unsubstituted (C1-C18)-alkyl, (C2-C12)-alkenyl, (C3-C7)-cycloalkyl, (C7-C15)-aralkyl, (C6-C10)-aryl, (C1-C18)-alkyloxy, or (C2-C18)-alkyloxy ester group, Q5 and Q6 independently represent hydrogen or a (C1-C18)-alkyl, (C2-C12)-alkenyl, (C3-C7)-cycloalkyl, (C7-C15)-aralkyl, (C6-C10)-aryl, (C1-C18)-alkoxy, or (C2-C18)-alkyloxy ester group substituted by at least one sulphonate group, with the proviso that Q5 and Q6 cannot both be hydrogen, and n represents an integer from 2 to 10,000.