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Preparation and Photophysical Properties of Mixed-Ligand Cyclometallated Complexes of Ir(III) with a Dendritic Bipyridine Ligand

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Abstract

Complexes [Ir(C^N)2(G1-bpy)]PF6, where C^N is a cyclometallating ligand derived from 2-(2′-thienyl)pyridine and 2-phenylpyridine, and G1-bpy is a dendritic bipyridine ligand of the first generation, 4,4′-bis[3″,5″-bis(benzyloxy)phenylethyl]-2,2′-bipyridine, were prepared and characterized by 1H NMR, electronic absorption, and emission spectroscopy. The polyether dendritic substituents exert a “ soft” effect on the spectral and luminescence properties of the complexes, manifested as slight destabilization of the electronically excited charge-transfer state involving the bipyridine ligand, as compared to the model complexes [Ir(C^N)2(bpy)]PF6.

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Authors and Affiliations

  1. Herzen Russian State Pedagogical University, St. Petersburg, Russia

    M. V. Kulikova & K. P. Balashev

  2. University of Messina, Messina, Italy

    N. McClenaghan

Authors
  1. M. V. Kulikova
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  2. N. McClenaghan
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  3. K. P. Balashev
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Translated from Zhurnal Obshchei Khimii, Vol. 75, No. 5, 2005, pp. 705–711.

Original Russian Text Copyright © 2005 by Kulikova, McClenaghan, Balashev.

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Kulikova, M.V., McClenaghan, N. & Balashev, K.P. Preparation and Photophysical Properties of Mixed-Ligand Cyclometallated Complexes of Ir(III) with a Dendritic Bipyridine Ligand. Russ J Gen Chem 75, 665–671 (2005). https://doi.org/10.1007/s11176-005-0295-x

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  • DOI: https://doi.org/10.1007/s11176-005-0295-x

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