Red phosphorescent compounds and organic electroluminescent devices using the same
申请人:Kim Jung Keun
公开号:US20070128468A1
公开(公告)日:2007-06-07
Disclosed herein are red phosphorescent compounds of the following Formulas 1 to 3:
wherein
R1 and R2 are independently a C
1
-C
4
alkyl group, R3, R4, R5 and R6 are independently selected from hydrogen, C
1
-C
4
alkyl groups and C
1
-C
4
alkoxy groups, and
is selected from 2,4-pentanedione, 2,2,6,6,-tetramethylheptane-3,5-dione, 1,3-propanedione, 1,3-butanedione, 3,5-heptanedione, 1,1,1-trifluoro-2,4-pentanedione, 1,1,1,5,5,5-hexafluoro-2,4-pentanedione, and 2,2-dimethyl-3,5-hexanedione;
wherein
R1, R2, R3 and R4 are independently selected from C
1
-C
4
alkyl groups and C
1
-C
4
alkoxy groups, and
is selected from 2,4-pentanedione, 2,2,6,6,-tetramethylheptane-3,5-dione, 1,3-propanedione, 1,3-butanedione, 3,5-heptanedione, 1,1,1-trifluoro-2,4-pentanedione, 1,1,1,5,5,5-hexafluoro-2,4-pentanedione and 2,2-dimethyl-3,5-hexanedione;
wherein
R1, R2, R3 and R4 are independently selected from hydrogen, C
1
-C
4
alkyl groups and C
1
-C
4
alkoxy groups, and
is selected from 2,4-pentanedione, 2,2,6,6,-tetramethylheptane-3,5-dione, 1,3-propanedione, 1,3-butanedione, 3,5-heptanedione, 1,1,1-trifluoro-2,4-pentanedione, 1,1,1,5,5,5-hexafluoro-2,4-pentanedione and 2,2-dimethyl-3,5-hexanedione. Further disclosed herein is an organic electroluminescent (EL) device comprising an anode, a hole injecting layer, a hole transport layer, a light-emitting layer, an electron transport layer, an electron injecting layer, and a cathode laminated in this order wherein one of the red phosphorescent compounds is used as a dopant of the light-emitting layer.
本文披露了以下1至3式的红色磷光化合物:其中,R1和R2分别是C1-C4烷基,R3、R4、R5和R6独立选择自氢、C1-C4烷基和C1-C4烷氧基,且为2,4-戊二酮、2,2,6,6-四甲基庚烷-3,5-二酮、1,3-丙二酮、1,3-丁二酮、3,5-庚二酮、1,1,1-三氟-2,4-戊二酮、1,1,1,5,5,5-六氟-2,4-戊二酮和2,2-二甲基-3,5-己二酮中选择;其中,R1、R2、R3和R4独立选择自C1-C4烷基和C1-C4烷氧基,且为2,4-戊二酮、2,2,6,6-四甲基庚烷-3,5-二酮、1,3-丙二酮、1,3-丁二酮、3,5-庚二酮、1,1,1-三氟-2,4-戊二酮、1,1,1,5,5,5-六氟-2,4-戊二酮和2,2-二甲基-3,5-己二酮中选择;其中,R1、R2、R3和R4独立选择自氢、C1-C4烷基和C1-C4烷氧基,且为2,4-戊二酮、2,2,6,6-四甲基庚烷-3,5-二酮、1,3-丙二酮、1,3-丁二酮、3,5-庚二酮、1,1,1-三氟-2,4-戊二酮、1,1,1,5,5,5-六氟-2,4-戊二酮和2,2-二甲基-3,5-己二酮中选择。本文进一步披露了一种有机电致发光(EL)器件,包括依次层叠的阳极、空穴注入层、空穴传输层、发光层、电子传输层、电子注入层和阴极,其中,红色磷光化合物中的一种被用作发光层的掺杂剂。