Phenyl-carbazole based tetradentate cyclometalated platinum complex and application thereof
View Patent ↗The present disclosure relates to a light emitting material for a tetradentate cyclometalated platinum complex and an application thereof in the field of OLED. The tetradentate cyclometalated platinum complex is selected from one of compounds as shown in formula I. The present disclosure adjusts the photophysical properties of the tetradentate cyclometalated platinum complex by changing the structure of a ligand surrounding a metal center or regulating and controlling the structure of a substituent on a ligand, which can emit light in a range of about 400 nm to about 700 nm and has the advantages of narrow emission spectrum, high stability and high efficiency and has a wide application prospect in the field of OLED display and illumination.
1. A tetradentate cyclometalated platinum complex, wherein the tetradentate cyclometalated platinum complex is selected from a compound as shown in formula I:
wherein:
each of V 1 , V 2 , V 3 and V 4 is an atom connected with Pt and independently selected from N atoms or C atoms, and V 1 , V 2 , V 3 and V 4 at least comprise two N atoms;
each of Y 1 , Y 2 , Y 3 , Y 4 , Y 5 , Y 6 , Y 7 , Y 8 , Y 9 , Y 10 , Y 11 , Y 12 and Y 13 is independently selected from N atoms or CH groups;
A represents O, S, CH 2 , CD 2 , CR a R b , C═O, SiR a R b , GeH 2 , GeR a R b , NH, NR c , PH, PR c , R c P═O, AsR c , R c As═O, S═O, SO 2 , Se, Se═O, SeO 2 , BH, BRc, R c Bi═O, BiH, or BiR c ;
X represents N, B, CH, CD, CR a , SiH, SiD, SiR a , GeH, GeD, GeR d , P, P═O, As, As═O, Bi or Bi═O;
each of R 1 , R 2 , R 3 , R 4 and R 5 independently represents mono-, di-, tri-, tetra-substitutions or unsubstitutions, and each of R 1 , R 2 , R 3 , R 4 and R 5 is independently hydrogen, deuterium, aryl, cycloalkyl, cycloalkenyl, heterocyclyl, heteroaryl, alkyl, alkenyl, alkynyl, halogen, hydroxyl, sulfydryl, nitro, cyano, amino, monoalkylamino or dialkylamino, monoarylamino or diarylamino, alkoxy, aryloxy, haloalkyl, ester, nitrile, isonitrile, heteroaryl, alkoxycarbonyl, acylamino, alkoxycarbonylamino, aryloxycarbonylamino, sulfonylamino, sulfamoyl, carbamoyl, alkylthio, sulfinyl, ureido, phosphoramido, imino, sulfo, carboxyl, thiol, substituted silyl, polymeric groups or a combination thereof; and
two or more adjacent R 1 , R 2 , R 3 , R 4 and R 5 can be optionally connected to form a fused ring.
2. The tetradentate cyclometalated platinum complex according to claim 1 , wherein the platinum complex has a structure selected from one of the following:
3. The tetradentate cyclometalated platinum complex according to claim 1 , wherein the platinum complex has a neutral charge.
4. The tetradentate cyclometalated platinum complex according to claim 2 , wherein the platinum complex has a neutral charge.
5. A device, wherein the device comprises the tetradentate cyclometalated platinum complex according to claim 1 .
6. The device according to claim 5 , wherein the device comprises a full color display.
7. The device according to claim 5 , wherein the device is a photovoltaic device.
8. The device according to claim 5 , wherein the device is a light emitting display device.
9. The device according to claim 5 , wherein the device comprises an organic light emitting diode.
10. The device according to claim 5 , wherein the device comprises a phosphorescent organic light emitting diode.
11. The device according to claim 5 , wherein the device is a phosphorescent organic light emitting diode.
12. The device according to claim 5 , wherein the tetradentate cyclometalated platinum complex is selected to have 100% internal quantum efficiency in the device environment.
13. A light emitting device comprising at least one cathode, at least one anode and at least one light emitting layer, wherein at least one layer of the light emitting layers comprises the tetradentate cyclometalated platinum complex according to claim 1 .