HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE
申请人:Ohrui Hiroki
公开号:US20080138656A1
公开(公告)日:2008-06-12
Provided is a novel heterocyclic compound which is useful as a material for an organic electroluminescent device. The heterocyclic compound is represented by the general formula [I]:
wherein X represents a nitrogen atom or a carbon atom; Y represents O or S; R
1
and R
2
each represent, independently of one another, a group selected from the group consisting of a substituted or unsubstituted alkyl group and the like; a represents 0 or more and 3 or less; b represents 0 or more and 3 or less; and Ar
1
represents a substituted or unsubstituted heterocyclic ring or the like; and n represents an integer of 2 to 10.
An object of the present invention is to provide a novel pyrene compound. Provided is a pyrene compound represented by the following general formula (I):
wherein: R
1
and R
2
each represent a substituted or unsubstituted alkyl group; and Ar
1
, Ar
2
, Ar
3
, and Ar
4
each represent a substituted or unsubstituted aryl group and the like.
CARBAZOLE DERIVATIVE AND ORGANIC LIGHT EMITTING DEVICE USING THE SAME
申请人:Igawa Satoshi
公开号:US20080131731A1
公开(公告)日:2008-06-05
Provided is an organic light emitting device including: a pair of electrodes including an anode and a cathode; and at least one layer formed of an organic compound interposed between the pair of electrodes, in which the at least one layer formed of the organic compound layer contains at least one kind of the carbazole derivative represented by the following general formula (I). The organic light emitting device has an optical output with extremely high efficiency and a high luminance and has an extremely high durability.