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- Title
Luminescent Pincer Platinum(II) Complexes with Emission Quantum Yields up to Almost Unity: Photophysics, Photoreductive CC Bond Formation, and Materials Applications.
- Authors
Chow, Pui-Keong; Cheng, Gang; Tong, Glenna So Ming; To, Wai-Pong; Kwong, Wai-Lun; Low, Kam-Hung; Kwok, Chi-Chung; Ma, Chensheng; Che, Chi-Ming
- Abstract
Luminescent pincer-type PtII complexes supported by C-deprotonated π-extended tridentate RC^N^NR′ ligands and pentafluorophenylacetylide ligands show emission quantum yields up to almost unity. Femtosecond time-resolved fluorescence measurements and time-dependent DFT calculations together reveal the dependence of excited-state structural distortions of [Pt(RC^N^NR′)(CC-C6F5)] on the positional isomers of the tridentate ligand. Pt complexes [Pt(R-C^N^NR′)(CC-Ar)] are efficient photocatalysts for visible-light-induced reductive CC bond formation. The [Pt(R-C^N^NR′)(CC-C6F5)] complexes perform strongly as phosphorescent dopants for green- and red-emitting organic light-emitting diodes (OLEDs) with external quantum efficiency values over 22.1 %. These complexes are also applied in two-photon cellular imaging when incorporated into mesoporous silica nanoparticles (MSNs).
- Subjects
LUMINESCENCE; PHOTOREDUCTION; METAL complexes; DENSITY functional theory; MESOPOROUS silica; CARBON-carbon bonds; ORGANIC light emitting diodes
- Publication
Angewandte Chemie International Edition, 2015, Vol 54, Issue 7, p2084
- ISSN
1433-7851
- Publication type
Article
- DOI
10.1002/anie.201408940