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- Title
Luminescent Tungsten(VI) Complexes: Photophysics and Applicability to Organic Light-Emitting Diodes and Photocatalysis.
- Authors
Yeung, Kwan-Ting; To, Wai-Pong; Sun, Chenyue; Cheng, Gang; Ma, Chensheng; Tong, Glenna So Ming; Yang, Chen; Che, Chi-Ming
- Abstract
The synthesis, excited-state dynamics, and applications of two series of air-stable luminescent tungsten(VI) complexes are described. These tungsten(VI) complexes show phosphorescence in the solid state and in solutions with emission quantum yields up to 22 % in thin film (5 % in mCP) at room temperature. Complex 2 c, containing a 5,7-diphenyl-8-hydroxyquinolinate ligand, displays prompt fluorescence (blue-green) and phosphorescence (red) of comparable intensity, which could be used for ratiometric luminescent sensing. Solution-processed organic light-emitting diodes (OLEDs) based on 1 d showed a stable yellow emission with an external quantum efficiency (EQE) and luminance up to 4.79 % and 1400 cd m−2 respectively. These tungsten(VI) complexes were also applied in light-induced aerobic oxidation reactions.
- Subjects
TUNGSTEN; OXIDATION-reduction reaction; PHOSPHORESCENCE; SOLID state chemistry; LIGANDS (Chemistry)
- Publication
Angewandte Chemie, 2017, Vol 129, Issue 1, p139
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201608240