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

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 wit...

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Published in:Dalton transactions : an international journal of inorganic chemistry 2023-04, Vol.52 (14), p.4595-465
Main Authors: Katkova, Svetlana A, Kozina, Daria O, Kisel, Kristina S, Sandzhieva, Maria A, Tarvanen, Dmitriy A, Makarov, Sergey V, Porsev, Vitaly V, Tunik, Sergey P, Kinzhalov, Mikhail A
Format: Article
Language:English
Subjects:
Current efficiency
Ligands
Organic light emitting diodes
Phosphorescence
Platinum
Quantum efficiency
Room temperature
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Summary: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. Cyclometallated platinum( ii ) species with ancillary acyclic diaminocarbene ligands work as efficient green emitting components of OLED devices.
ISSN:1477-9226
1477-9234
DOI:10.1039/d3dt00080j