DITRIPHENYLENE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME

摘要

The present invention discloses a novel ditriphenylene derivative is represented by the following formula(I), the organic EL device employing the ditriphenylene derivative as host material or dopant material of emitting layer can lower driving voltage, prolong half-life time and increase the efficiency.;;Wherein m, n represent an integer of 0 to 10. X is a divalent bridge selected from the atom or group consisting from O, S, C(R3)(R4), NR5, Si(R6)(R7). Ar1, Ar2, R1 to R7 are substituents and the same definition as described in the present invention.

主权项

1. A ditriphenylene derivative with a general formula(IV) as following:wherein X is a divalent bridge selected from the group consisting from NR5, C(R3)(R4) and at least one of R5, Ar1, Ar2, Ar3, Ar4 are independently represent the following formula(IV-a) or formula(IV-b):according to the above-mentioned formula(IV), formula(IV-a) and formula(IV-b) wherein L1, L2 represent a single bond, a substituted or unsubstituted divalent phenylene group. Y1 to Y3 each independently represent nitrogen atom or CR10. R8 to R10 each independently represent a hydrogen atom, a substituted or unsubstituted carbazolyl group having 12 to 30 carbon atoms, a substituted or unsubstituted non-fused aryl group having 6 to 30 carbon atoms. R3 to R4 are independently selected from the group consisting of a hydrogen atom, alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 20 carbon atoms.