Cyclometalated platinum(II) complexes with acyclic diaminocarbene ligands for OLED application

Svetlana A Katkova; Daria O Kozina; Kristina S Kisel; Maria A Sandzhieva; Dmitriy A Tarvanen; Sergey V Makarov; Vitaly V Porsev; Sergey P Tunik; Mikhail A Kinzhalov

doi:10.1039/d3dt00080j

Cyclometalated platinum(II) complexes with acyclic diaminocarbene ligands for OLED application

Dalton Trans. 2023 Apr 4;52(14):4595-4605. doi: 10.1039/d3dt00080j.

Authors

Affiliations

¹ St Petersburg University, 7/9 Universitetskaya Nab., Saint Petersburg, 199034, Russian Federation. sergey.tunik@spbu.ru.
² School of Physics and Engineering, ITMO University, Lomonosova 9, 197101, St. Petersburg, Russian Federation.
³ Harbin Engineering University, Harbin 150001, Heilongjiang, China.
⁴ Qingdao Innovation and Development Center of Harbin Engineering University, Qingdao 266000, Shandong, China.
⁵ Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russian Federation.

PMID: 36928166
DOI: 10.1039/d3dt00080j

Abstract

A novel series of cyclometalated platinum(II) complexes bearing acyclic diaminocarbene (ADC) ancillary ligands were designed and prepared. Their photophysical properties were systematically studied through experimental and theoretical investigations. All complexes exhibit green phosphorescence with a quantum efficiency of up to 45% in 2 wt% doped PMMA film at room temperature. The complexes are used as light-emitting dopants for organic light-emitting diode (OLED) fabrication. The devices displayed a green emission with a maximum current efficiency of 2.9 cd A^-1 and a luminance of 2700 cd m^-2. These results show that these cyclometalated platinum(II) complexes can be used as efficient green emitting components of OLED devices.