Mao Z, Liu J, Kang TS, Wang W, Han QB, Wang CM, Leung CH, Ma DL. An Ir(III) complex chemosensor for the detection of thiols.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2016;
17:109-114. [PMID:
27877862 PMCID:
PMC5101911 DOI:
10.1080/14686996.2016.1162081]
[Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 02/26/2016] [Accepted: 03/02/2016] [Indexed: 05/23/2023]
Abstract
In this study, we report the use of a cyclometalated luminescent iridium(III) complex for the visualization of thiols. The detection of glutathione (GSH) by complex 1 is achieved through the reduction of its phendione N^N donor, which influences the metal-to-ligand charge-transfer (MLCT) of the complex. Complex 1 produced a maximum threefold luminescence enhancement at 587 nm in response to GSH. The linear detection range of 1 for GSH is between 0.2 and 2 M equivalents of GSH, with a detection limit of 1.67 μM. Complex 1 also displays good selectivity for thiols over other amino acids.
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