Selective sensing of 2,4,6-trinitrophenol (TNP) in aqueous media with "aggregation-induced emission enhancement" (AIEE)-active iridium(iii) complexes

A series of new phosphorescent cyclometalated iridium(iii) complexes which possess aggregation-induced emission enhancement (AIEE) detect 2,4,6-trinitrophenol (TNP) selectively with high quenching constants in aqueous media. The sensing mechanism was systematically investigated by mass spectrometry,...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2018, Vol.54 (14), p.1730-1733
Main Authors: Che, Weilong, Li, Guangfu, Liu, Xingman, Shao, Kuizhan, Zhu, Dongxia, Su, Zhongmin, Bryce, Martin R
Format: Article
Language:English
Subjects:
Agglomeration
Crystal structure
Iridium
Iridium compounds
Mass spectrometry
NMR
NMR spectroscopy
Nuclear magnetic resonance
Phosphorescence
Structural analysis
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Summary:A series of new phosphorescent cyclometalated iridium(iii) complexes which possess aggregation-induced emission enhancement (AIEE) detect 2,4,6-trinitrophenol (TNP) selectively with high quenching constants in aqueous media. The sensing mechanism was systematically investigated by mass spectrometry, H and F NMR spectroscopy. X-ray crystal structure analysis reveals an O-HO interaction between TNP and the ancillary ligand which explains the high selectivity for TNP compared to other nitro-aromatics.
ISSN:1359-7345
1364-548X
DOI:10.1039/c7cc08832a