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Two new reversible naphthalimide‐based fluorescent chemosensors for Hg 2+
Author(s) -
Li Gongchun,
Gao Guangqin,
Cheng Junye,
Chen Xiaopo,
Zhao Yufen,
Ye Yong
Publication year - 2016
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.3063
Subject(s) - fluorescence , chemistry , imidazole , naked eye , ion , amide , photochemistry , stereochemistry , detection limit , organic chemistry , chromatography , physics , quantum mechanics
Naphthalimide‐based fluorescent probes 1 and 2 were synthesized, and were designed to form probe–Hg complexes through Hg 2+ ions coordinated to the amide group and imidazole group. They showed high sensitivity and were selective ‘naked‐eye’ chemosensors for Hg 2+ in phosphate buffer. The fluorescence of compounds 1 and 2 could be quenched up to 90% by the addition of Hg 2+ . Reversible probes can detect Hg 2+ ions over a wide pH range (7.0–10.0). Copyright © 2015 John Wiley & Sons, Ltd.