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Issue 91, 2015
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Phosphorescent chemosensor for Hg2+ based on an iridium(iii) complex coordinated with 4-phenylquinazoline and carbazole dithiocarbamate

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Abstract

A highly selective and colorimetric phosphorescent turn-on chemosensor for Hg2+ based on an iridium(III) complex Ir(pqz)2(cdc) (pqzH = 4-phenylquinazoline, Nacdc = sodium carbazole dithiocarbamate) was realized. The photograph of Ir(pqz)2(cdc)under ultraviolet light exhibited an emitting color change from red to yellow without and with Hg2+ in an acetonitrile (MeCN) solution, and it can also serve as a highly selective chemosensor for Hg2+ with naked-eye detection. Upon addition of a tetrahydrofuran (THF) solution of Hg2+, the dichloromethane (DCM) solution of Ir(pqz)2(cdc) gave a visual color change and significant luminescent quenching. When MeCN was added, a new emission peak at 562 nm emerged, which constituted a selective MeCN phosphorescent chemosensor.

Graphical abstract: Phosphorescent chemosensor for Hg2+ based on an iridium(iii) complex coordinated with 4-phenylquinazoline and carbazole dithiocarbamate

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Article information


Submitted
22 May 2015
Accepted
24 Aug 2015
First published
25 Aug 2015

RSC Adv., 2015,5, 74924-74931
Article type
Paper
Author version available

Phosphorescent chemosensor for Hg2+ based on an iridium(III) complex coordinated with 4-phenylquinazoline and carbazole dithiocarbamate

Q. Mei, Y. Shi, Q. Hua and B. Tong, RSC Adv., 2015, 5, 74924
DOI: 10.1039/C5RA09609J

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