Material for organic electroluminescence devices and organic electroluminescence device using the material

摘要

A material for organic electroluminescence devices comprising a compound in which a heterocyclic group having nitrogen is bonded to an arylcarbazolyl group or a carbazolylalkylene group and an organic electroluminescence device comprising an anode, a cathode and an organic thin film layer comprising at least one layer and disposed between the anode and the cathode, wherein at least one layer in the organic thin film layer comprises the material for organic electroluminescence devices described above. The material can provide an organic electroluminescence device emitting bluish light with a high purity of color. The organic electroluminescence device uses the material.

主权项

1. A material for organic electroluminescence devices which comprises a compound represented by formula (1) or (2):
(Cz-)nA  (1) Cz(-A)m  (2) wherein Cz represents a substituted or unsubstituted arylcarbazolyl group or a substituted or unsubstituted carbazolylalkylene group; A represents a group represented by formula (A):
(M)p-(L)q-(M′)r  (A) wherein M and M′ may be the same or different and each independently represent a substituted or unsubstituted pyrimidine ring, L represents a single bond, an unsubstituted aryl group having 6 to 30 carbon atoms, an unsubstituted arylene group having 6 to 30 carbon atoms, a substituted or unsubstituted cycloalkylene group having 5 to 30 carbon atoms, or a substituted or unsubstituted heteroaromatic ring having 2 to 30 carbon atoms, p represents an integer of 0 to 2, q represents an integer of 1 or 2, r represents an integer of 0 to 2, and p+r represents an integer of 1 or greater; n represents 1 or 3 and m represents an integer of 1 to 3; and the substituent for Cz is at least one group selected from the group consisting of a halogen atom, a carbazole group, a hydroxyl group, a substituted amino group, an unsubstituted amino group, a nitro group, a cyano group, a silyl group, a trifluoromethyl group, a carbonyl group, a carboxyl group, a substituted alkyl group, an unsubstituted alkyl group, a substituted alkenyl group, an unsubstituted alkenyl group, a substituted aromatic group, an unsubstituted aromatic group, a substituted aralkyl group, an unsubstituted aralkyl group, a substituted aryloxy group, an unsubstituted aryloxy group, a substituted alkyloxyl group, and an unsubstituted alkyloxyl group, and the substituent for M and M′ is at least one group selected from the group consisting of a halogen atom, a carbazole group, a hydroxyl group, a substituted amino group, an unsubstituted amino group, a cyano group, a silyl group, a trifluoromethyl group, a carbonyl group, a carboxyl group, a substituted alkyl group, an unsubstituted alkyl group, a substituted alkenyl group, an unsubstituted alkenyl group, an unsubstituted aromatic group, a substituted aromatic heterocyclic group, a substituted aralkyl group, an unsubstituted aralkyl group, a substituted aryloxy group, and an unsubstituted aryloxy group.