Electroluminescent iridium compounds with fluorinated phenylpyridines, phenylpyrimidines, and phenylquinolines and devices made with such compounds
The present invention is generally directed to electroluminescent Ir(III) compounds, the substituted 2-phenylpyridines, phenylpyrimidines, and phenylquinolines that are used to make the Ir(III) compounds, and devices that are made with the Ir(III) compounds.
1. An electroluminescent ligand compound having structure (II) below:
and selected from compounds 2-a, 2-b, 2-d through 2-w, and 2-y through 2-aa, wherein:
Com-
pound
A
R 1
R 2
R 3
R 4
R 5
R 6
R 7
R 8 R 9
2-a
C
H
H
CF 3
H
F
H
H
H H
2-b
C
H
H
CF 3
H
H
CF 3
H
H H
2-d
C
H
H
CF 3
H
H
F
H
H H
2-e
C
H
H
CF 3
H
H
H
CH 3 O
H H
2-f
C
Cl
H
CF 3
H
H
H
H
H H
2-g
C
H
H
H
CH 3
H
H
F
H H
2-h
N
—
H
H
H
H
H
F
H H
2-i
C
H
H
CF 3
H
H
H
CF 3 O
H H
2-j
N
—
CF 3
H
H
F
H
H
H H
2-k
C
H
H
CF 3
H
H
H
F
H H
2-l
C
CF 3
H
H
H
H
H
H
H H
2-m
C
Cl
H
CF 3
H
H
H
F
H H
2-n
C
CF 3
H
H
H
H
H
F
H H
2-o
C
CF 3
H
H
H
H
H
CH 3 O
H H
2-p
C
Cl
H
CF 3
H
H
H
CH 3 O
H H
2-q
N
—
CF 3
H
H
H
H
F
H H
2-r
C
Cl
H
CF 3
H
H
H
H
H F
2-s
C
H
H
CF 3
H
H
H
H
H H
2-t
C
Cl
H
H
H
F
H
H
H H
2-v
C
H
H
CF 3
H
H
CH 3 O
H
H H
2-w
C
H
CH 3 O
H
H
H
H
CF 3
H H
2-y
C
H
H
CF 3
H
H
F
H
F H
2-z
C
H
H
CF 3
H
F
H
F
H H
2-aa
C
H
H
Br
H
H
H
Br
H H.