Materials for electroluminescent devices
AssigneeThe University of Hong Kong
InventorsChi-Ming Che, Iona Hiu Tung Sham
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Abstract
Materials containing one or more borazine rings are employed as materials for electroluminescent devices. The compounds have molecular structures represented by the following formula: in which R1–R6 are independently a metal; a whole or part of an optionally substituted borazine ring; hydrogen; halogen; hydroxyl; optionally substituted alkyl, cycloalkyl, aryl, acyl, alkoxy, acyloxy, amino, acylamino, aralkyl, cyano, carboxyl, thio, vinyl, styryl, aminocarbonyl, carbamoyl, aryloxycarbonyl, phenoxycarbonyl, or alkoxycarbonyl, as well as recognized donor and acceptor groups. The compounds have high thermal stability as well as hole and electron mobilities.
Claims19
An electroluminescent device comprising an electroluminescent material sandwiched between electrodes, wherein the electroluminescent material comprises at least one borazine-containing entity represented by formula I,
- wherein R1–R6 are independently selected from the group consisting of metal;
- an optionally substituted borazine ring;
- hydrogen;
- halogen;
- hydroxyl;
- unsubstituted or substituted alkyl group, cycloalkyl group, aryl group, acyl group, alkoxy group, acyloxy group, amino group, acylamino group, aralkyl group, cyano group, carboxyl group, thio group, vinyl group, styryl group, aminocarbonyl group, carbamoyl group, aryloxycarbonyl group, phenoxycarbonyl group, and alkoxycarbonyl group, with the substituents being selected from the group consisting of metals, hydrogen, halogen, hydroxyl, donor groups and acceptor groups;
- and wherein the substituents together with the group on which they are substituted can form a ring.
Dependencies are inferred from the claim text.