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A New Thioimide‐Based Fluorescent ‘Turn‐On’ and Chromogenic Chemodosimeter in Acetonitrile and Its Nanoparticles in Water for Highly Selective and Sensitive Detection of Hg 2+
Author(s) -
Mou Yong,
Lu Haiyan,
Li Meng,
Chen Chuanfeng
Publication year - 2017
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201600928
Subject(s) - chemistry , chromogenic , fluorescence , acetonitrile , photochemistry , turn (biochemistry) , aqueous solution , imide , combinatorial chemistry , polymer chemistry , organic chemistry , chromatography , optics , biochemistry , physics
A new thioimide‐based fluorescent ‘turn‐on’ and chromogenic chemodosimeter for highly selective and sensitive detection of Hg 2+ has been developed. The chemodosimeter showed not only marked color change of the solution from dark green to colorless upon the addition of Hg 2+ ion, but also 100‐fold enhancement of the fluorescent intensity in aqueous acetonitrile. The detection mechanism resulted from the Hg 2+ induced desulfurization of the thioimide to its imide precursor. When the chemodosimeter was assembled into nanoparticles, it could also exhibit remarkably dual response of color change, fluorescence enhancement, and highly selective and sensitive detection of Hg 2+ .