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Rapid “turn-on” photoluminescence detection of bisulfite in wines and living cells with formyl bearing bis-cyclometalated Ir(III) complex

Abstract

A new photoluminescence (PL) probe based on formyl bearing bis-cyclometalated Ir(III) complex, [Ir(ppy)2phen-CHO]+PF6- (1), is synthesized and applied to selective detection of bisulfite anion (HSO3-). The probe 1 is prepared by using 2-phenylpyridine (ppy) as C^N main ligand and 1,10-phenanthroline-5-carboxaldehyde (phen-CHO) as N^N ancillary ligand. Probe 1 displayed excellent selective PL enhancement in response to HSO3- in acetic acid-sodium acetate buffer solution (pH=5.0). The increase of PL signal is directly proportional to the concentration of HSO3- in the range of 2 μM to 45 μM with a detection limit of 0.9 μM using 50 μM probe 1 while the increase of PL signal is directly proportional to the concentration of HSO3- in the range of 0.5 μM and 6 μM with a detection limit of 0.3 μM using 10 μM probe 1. More importantly, probe 1 can response to HSO3- rapidly within 40 s. Furthermore, probe 1 was successfully applied to detect HSO3- in real white wines and bioimaging of HSO3- in living cells. The superior properties of the probe 1 make it of great potential use for studying the effects of HSO3- in other biosystems.

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Supplementary files

Publication details

The article was received on 08 Apr 2018, accepted on 07 Jun 2018 and first published on 11 Jun 2018


Article type: Paper
DOI: 10.1039/C8AN00640G
Citation: Analyst, 2018, Accepted Manuscript
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    Rapid “turn-on” photoluminescence detection of bisulfite in wines and living cells with formyl bearing bis-cyclometalated Ir(III) complex

    H. Gao, H. Qi, Y. Peng, H. Qi and C. Zhang, Analyst, 2018, Accepted Manuscript , DOI: 10.1039/C8AN00640G

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