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Oxazine‐thione‐based Colorimetric Fluorescent OFF‐ON Probes for Hg 2+ Recognition
Author(s) -
Zhang Qianqian,
Sun Ru,
Ge Jianfeng,
Xu Qingfeng,
Li Najun,
Lu Jianmei
Publication year - 2011
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.201100376
Subject(s) - chemistry , fluorescence , acetonitrile , metal ions in aqueous solution , solvent , ion , time dependent density functional theory , photochemistry , metal , analytical chemistry (journal) , density functional theory , computational chemistry , chromatography , organic chemistry , optics , physics
Two colorimetric probes based on oxazine‐thione 1a and 1b for the detection of Hg 2+ were designed and synthesized. The probe 1a exhibits about a 70‐fold enhancement in fluorescence and a color change after the addition of Hg 2+ in acetonitrile/wate solvent. 1a was also highly selective to Hg 2+ over other metal ions. Furthermore, DFT/TDDFT calculations were taken to explain the OFF‐ON emission response.