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Issue 3, 2013
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Aggregation-induced phosphorescence of iridium(III) complexes with 2,2′-bipyridine-acylhydrazone and their highly selective recognition to Cu2+

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Abstract

Two cationic cyclometallated iridium(III) complexes with 2,2′-bipyridine-acylhydrazone were synthesized and characterized by spectroscopic and photophysical measurements. They exhibit remarkable aggregation-induced phosphorescent emission (AIPE) phenomenon which is caused by the restriction of rapid isomerization of the C[double bond, length as m-dash]N bond in the acylhydrazone moiety and are supported by TD-DFT studies. They also act as a significant ‘off–on’ luminescent switch for Cu2+ which works as both catalyzer and oxidant in the sensing process, resulting in hydrolysis and cyclization products which are highly emissive. The sensing properties of iridium(III) complexes are also investigated by ESI-MS spectrometry and 1H NMR spectroscopy.

Graphical abstract: Aggregation-induced phosphorescence of iridium(iii) complexes with 2,2′-bipyridine-acylhydrazone and their highly selective recognition to Cu2+

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Publication details

The article was received on 17 Oct 2012, accepted on 21 Nov 2012 and first published on 22 Nov 2012


Article type: Paper
DOI: 10.1039/C2AN36501D
Citation: Analyst, 2013,138, 894-900
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    Aggregation-induced phosphorescence of iridium(III) complexes with 2,2′-bipyridine-acylhydrazone and their highly selective recognition to Cu2+

    N. Zhao, Y. Wu, J. Luo, L. Shi and Z. Chen, Analyst, 2013, 138, 894
    DOI: 10.1039/C2AN36501D

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