A diarylethene-based “on-off-on” fluorescence sensor for the sequential recognition of mercury and cysteine

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Abstract

A novel photochromic diarylethene with a quinoline unit was synthesized with multi-controllable fluorescence switching properties, which could be induced by light, mercury (Hg2+) and cysteine (Cys). Because the diarylethene displayed obvious fluorescence quenching with Hg2+ and the fluorescence was recovered to its original state evidently with Cys, it could sequentially recognize Hg2+ and Cys. Additionally, a logic circuit was constructed with the fluorescence intensity at 468 nm as output, and the combined stimuli of light and chemicals as inputs.

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Li, G., Ma, L., Liu, G., Fan, C., & Pu, S. (2017). A diarylethene-based “on-off-on” fluorescence sensor for the sequential recognition of mercury and cysteine. RSC Advances, 7(33), 20591–20596. https://doi.org/10.1039/c6ra27773j

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