申请人:UNIVERSAL DISPLAY CORPORATION
公开号:US20140014922A1
公开(公告)日:2014-01-16
A dibenzo[1,4]azaborine comprising compound, and devices and formulations including the same are described. The compound includes a ligand L
1
including
wherein E
1
is N; E
2
is B; and R
3
and R
4
represent mono, di, tri, tetra substitutions or no substitution;
wherein R
1
, R
2
, R
3
and R
4
are each independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof;
wherein any two adjacent R
1
, R
2
, R
3
, and R
4
are optionally joined to form a ring, which may be further substituted;
wherein L
1
is coordinated to a metal M, provided that the metal M does not form bond with E
1
and E
2
; and
wherein L
1
may be linked with other ligands to comprise a bidentate, tridentate, tetradentate, pentadentate or hexadentate ligand.