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New Iridium Complex Coordinated with Tetrathiafulvalene Substituted Triazole-pyridine Ligand: Synthesis, Photophysical and Electrochemical properties

Zhi-Gang Niu, Hui Xie, Li-Rong He, Kai-Xiu Li, Qing Xia, Dong-Min Wu, Gao-Nan Li

Abstract


A new iridium(III) complex based on the triazole-pyridine ligand with tetrathiafulvalene unit, [Ir(ppy)2(L)]PF6 (1), has been synthesized and structurally characterized. The absorption spectra, luminescent spectra and electrochemical behaviors of L and 1 have been investigated. Complex 1 is found to be emissive at room temperature with maxima at 481 and 510 nm. The broad and structured emission bands are suggested a mixing of 3LC (3π–π*) and 3CT (3MLCT) excited states. The influence of iridium ion coordination on the redox properties of the TTF has also been investigated by cyclic voltammetry.


Keywords


Iridium(III) complexes; Tetrathiafulvalene; Triazol-pyridine ligands; Photoluminescence; Cyclic voltammetry

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DOI: http://dx.doi.org/10.17344/acsi.2016.2246

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Copyright (c) 2016 Zhi-Gang Niu, Hui Xie, Li-Rong He, Kai-Xiu Li, Qing Xia, Dong-Min Wu, Gao-Nan Li

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