An electroluminescent device comprises a layer containing a naphthalene compound represented by Formula (1),
wherein:
each R
1
and R
2
represents an independently selected substituent provided that adjacent substituents may join to form a ring; p and w independently are 0-3; the amine nitrogens on the naphthalene nucleus are located on separate rings; m and n independently are 0, 1 or 2;
each Ar
b
represents an independently selected aromatic group; and each Ar
a
represents an independently selected phenylene, biphenylene or naphthalene group;
provided that at least one R
1
or R
2
substituent of the naphthalene compound represented by Formula (1) is a sterically bulky substituent.
US6849345B2
申请人:——
公开号:US6849345B2
公开(公告)日:2005-02-01
Organic electroluminescent devices with high luminance
申请人:Parton Richard L.
公开号:US06849345B2
公开(公告)日:2005-02-01
Disclosed is a multilayer electroluminescent device comprising a cathode, an anode, a light emitting layer (LEL) and a layer disposed between the cathode and anode containing a naphthalene compound represented by formula (1):
wherein
m is 0, 1 or 2;
each R
a
is an independently selected substituent and each n is independently 0 to 3;
each Ar
a
is an independently selected aromatic group; and
each Ar
b
is an independently selected carbocyclic aromatic group;
provided that two ring substituents may join to form a ring.
The device provides a desired high luminance.