Non-platinum metal complexes for excimer based single dopant white organic light emitting diodes
Complexes and devices, such as organic light emitting devices and full color displays, including a compound of the formula: wherein: M is Pd 2+ , Ir + , Rh + , or Au 3+ ; each of V 1 , V 2 , V 3 , and V 4 is coordinated to M and is independently N, C, P, B, or Si; each of L 1 , L 2 , L 3 , and L 4 is independently a substituted or unsubstituted aryl, cycloalkyl, cycloalkenyl, heterocyclyl, heteroaryl, carbene, or N-heterocyclic carbene; and Z is O, S, NR, CR 2 , SiR 2 , BR, PR, where each R is independently substituted or unsubstituted C 1 -C 4 alkyl or substituted or unsubstituted aryl.
1. A compound having the following structure:
wherein:
M is Pd 2+ ;
each R 1 , R 2 , R 3 , and R 4 represents a non-hydrogen substituent and is independently substituted or unsubstituted C 1 -C 4 alkyl or substituted or unsubstituted aryl;
each of V 1 , V 2 , V 3 , and V 4 is coordinated to M and is independently N, C, P, B, or Si;
each n is independently an integer of 0 to 3, valency permitting; and
each of Y 1a , Y 2a , Y 1b , Y 2b , Y 3a , Y 3c , Y 3d , Y 4a , Y 4b , Y 4c , Y 4d is independently N, NR 4a , or CR 4b , where each R 4a and R 4b is independently hydrogen, hydroxyl, amino, nitro, thiol, or substituted or unsubstituted C 1 -C 4 alkyl, alkoxy, or aryl;
Z is BR, PR,
where each R is independently substituted or unsubstituted C 1 -C 4 alkyl or substituted or unsubstituted aryl; or
Z is NR, CR 2 , or SiR 2 , wherein each R is independently substituted or unsubstituted C 1 -C 4 alkyl or substituted or unsubstituted aryl; and wherein at least one R represents substituted or unsubstituted aryl.
2. The compound of claim 1 , wherein the compound has one of the following structures:
3. A light emitting device comprising the compound of claim 1 .
4. An OLED device comprising the compound of claim 1 .
5. The OLED device of claim 4 , wherein the device is a phosphorescent OLED device.
6. A photovoltaic device comprising the compound of claim 1 .
7. A luminescent display device comprising the compound of claim 1 .