Heteroleptic Cu(I) Phenanthroline Complexes Bearing Benzoxazole and Benzothiazole Moieties for Visible Light Absorption
- 14 October 2021
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 51 (1), 69-72
- https://doi.org/10.1246/cl.210583
Abstract
Three kinds of heteroleptic Cu(I) complexes having a phenanthroline-based ligand acting as a chromophore and bearing benzoxazole, benzothiazole, and thiazole moieties were synthesized. Introduction in the phenanthroline ligands of electron-withdrawing five-membered aryl groups caused large red-shifts in the metal-to-ligand charge transfer bands, showing visible light absorption up to 500 nm. The obtained Cu(I) complexes exhibited emissions with quantum yields of 0.01–0.04 and long lifetimes of 0.4–3 μs.Keywords
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