| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an organic electric field light emitting element having sufficient luminance, excellent in stability and durability, capable of being enlarged in area, and easy to be manufactured. <P>SOLUTION: The organic electric field light emitting element has an organic compound layer between a pair of electrodes, and the organic compound layer contains charge transportation polyurethane having a repetition structure represented by a formulas (I-1) and (I-2). In the formulas (I-1) and (I-2), Ar<SP>1</SP>represents a substituted or unsubstituted monovalent phenyl group, substituted or unsubstituted monovalent polynuclear hydrocarbon with 2-10 aromatic rings, substituted or unsubstituted monovalent condensed aromatic hydrocarbon with 2-10 aromatic rings, or a substituted or unsubstituted monovalent aromatic heterocycle, and X<SP>1</SP>represents a group shown by a formula (II). In the formula (II), Ar<SP>2</SP>represents a substituted or unsubstituted bivalent phenylene group, substituted or unsubstituted bivalent polynuclear hydrocarbon with 2-10 aromatic rings, substituted or unsubstituted bivalent condensed aromatic hydrocarbon with 2-10 aromatic rings, or a substituted or unsubstituted bivalent aromatic heterocycle, X<SP>2</SP>represents a substituted or unsubstituted alkylene group of 1-10C, and n is an integer of 1-10. <P>COPYRIGHT: (C)2008,JPO&INPIT |
