[EN] 5-SUBSTITUTED 2-PHENYLQUINOLINE COMPLEXES MATERIALS FOR LIGHT EMITTING DIODE [FR] MATÉRIAUX À BASE DE COMPLEXES DE 2-PHÉNYLQUINOLINE SUBSTITUÉE EN POSITION 5 POUR DIODE ÉLECTROLUMINESCENTE
[EN] 5-SUBSTITUTED 2-PHENYLQUINOLINE COMPLEXES MATERIALS FOR LIGHT EMITTING DIODE [FR] MATÉRIAUX À BASE DE COMPLEXES DE 2-PHÉNYLQUINOLINE SUBSTITUÉE EN POSITION 5 POUR DIODE ÉLECTROLUMINESCENTE
5-Substituted 2 Phenylquinoline Complexes Materials for Light Emitting Diode
申请人:Ma Bin
公开号:US20120181511A1
公开(公告)日:2012-07-19
Compounds are provided that comprise a ligand having a 5-substituted 2-phenylquinoline. In particular, the 2-phenylquinoline may be substituted with a bulky alkyl at the 5-position. These compounds may be used in organic light emitting devices, in particular as red emitters in the emissive layer of such devices, to provide devices having improved properties.
A compound comprising a first ligand L
A
having a Formula selected from:
is disclosed. In the Formulas rings B and C are 5-membered or 6-membered aromatic or heteroaromatic ring; Z
1
, Z
2
, X
1
, X
2
, X
3
, X
4
, X
5
, and X
6
are each C or N, but X
1
, X
2
, X
3
, or X
4
is C when it forms a direct bond to Z
2
; Y is selected from CRR′, NR′, O, S, and Se; R, R′, R
A
, R
B
, R
C
, and R
D
are each selected from a variety of substituents; the ligand L
A
is coordinated to a metal M by the dashed lines, and optionally to other ligands. Organic light emitting devices and consumer products containing the compounds are also disclosed.
Compounds comprising the formula L1L2MX wherein L1, L2, and X are distinct bidentate ligands that form an octahedral complex on the metal M, wherein M is a metal with an atomic weight greater than 40. Compounds of this formula are sublimated more facilely than octahedral metal complexes where L1, L2, and X are not distinct bidentate ligands. Organic light emitting devices are also described wherein the emissive layer may comprise a host material containing an emissive molecule of formula L1L2MX, which molecule is adapted to luminesce when a voltage is applied across the heterostructure, and the emissive molecule is selected from the group of phosphorescent organometallic complexes, including iridium complexes of the formula L1L2IrX wherein L1, L2, and X are distinct bidentate ligands.
Compounds are provided that comprise a ligand having a 5-substituted 2-phenylquinoline. In particular, the 2-phenylquinoline may be substituted with a cycloalkyl containing group at the 5-position. These compounds may be used in organic light emitting devices, in particular as red emitters in the emissive layer of such devices, to provide devices having improved properties.