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A New Fluorescent Chemodosimeter for Hg 2+ with High Selectivity and Sensitivity in Water
Author(s) -
Yang Dengchen,
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.201600519
Subject(s) - chemistry , fluorescence , selectivity , metal ions in aqueous solution , imide , aldehyde , detection limit , photochemistry , ion , organic chemistry , chromatography , catalysis , physics , quantum mechanics
A new fluorescent chemodosimeter based on tetrahydro[5]helicene imide was synthesized, and it showed high selectivity and sensitivity toward Hg 2+ ions over other different tested metal ions in water. The response time was within 0.5 min, and the detection limit of the chemodosimeter for Hg 2+ was estimated to be 2.0 × 10 −8 mol•L −1 . The Hg 2+ promoted deprotection of dithioacetal groups of 1 , which induced water‐soluble fluorescent chemodosimeter 1 to form a water‐insoluble aldehyde precursor.