MATERIAL FOR ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE
申请人:Morishita Hironobu
公开号:US20070160871A1
公开(公告)日:2007-07-12
A material for an organic electroluminescent device represented by the following formula (I):
wherein X
1
and X
2
are independently one of specific divalent groups; Y
1
to Y
4
are independently a carbon atom or a nitrogen atom; R
1
to R
4
are independently a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, a halogen atom, a fluoroalkyl group, or a cyano group; and R
1
and R
2
, and R
3
and R
4
may be bonded together to form a ring, respectively.