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Issue 2, 2014
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Orotate containing anionic luminescent iridium(III) complexes and their use in soft salts

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Abstract

Two anionic iridium complexes [(R-ppy)2Ir(O^N)]TBA with R-ppy = 2-phenylpyridine or 4,5′-dimethyl-2-phenylpyridine, O^N = dianionic form of orotic acid and TBA = tetrabutylammonium have been synthesised and fully characterised by UV-Vis, emission, IR, NMR and cyclic voltammetric studies. These cyclometallated luminescent complexes containing a dianionic bidentate ancillary ligand show bright emission (60–70% PLQY) with maxima in the green region of the visible spectrum. Coupled with the ionic iridium complexes [(ppy)2Ir(N^N)]X, where N^N = 2-picolylamine or 2,2′-bipyridyl, and X = Cl or CH3CO2, a series of new soft salts of general formula [(ppy)2Ir(N^N)][(R-ppy)2Ir (O^N)] have been obtained and fully characterized, with enhanced luminescent properties up to ca. 80% of phosphorescence quantum yields.

Graphical abstract: Orotate containing anionic luminescent iridium(iii) complexes and their use in soft salts

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Publication details

The article was received on 31 Jul 2013, accepted on 01 Oct 2013 and first published on 02 Oct 2013


Article type: Paper
DOI: 10.1039/C3DT52077C
Citation: Dalton Trans., 2014,43, 784-789
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    Orotate containing anionic luminescent iridium(III) complexes and their use in soft salts

    A. Ionescu, E. I. Szerb, Y. J. Yadav, A. M. Talarico, M. Ghedini and N. Godbert, Dalton Trans., 2014, 43, 784
    DOI: 10.1039/C3DT52077C

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