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A Ratiometric Tetrazolylpyridine‐Based “Turn‐On” Fluorescent Chemosensor for Zinc(II) Ion in Aqueous Media
Author(s) -
Kaleeswaran Palanichamy,
Azath Ismail Abulkalam,
Tharmaraj Vairaperumal,
Pitchumani Kasi
Publication year - 2014
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201402126
Subject(s) - fluorescence , chemistry , photochemistry , intramolecular force , ion , aqueous solution , metal ions in aqueous solution , zinc , detection limit , pyridine , turn (biochemistry) , excited state , aqueous medium , inorganic chemistry , stereochemistry , organic chemistry , quantum mechanics , biochemistry , physics , chromatography , nuclear physics
The highly selective ratiometric “turn‐on” fluorescent sensing of Zn 2+ ion involving 2‐(1 H ‐tetrazole‐5‐yl)pyridine ( 2PT ) in aqueous medium is reported, which is not observed when other metal ions are present. Upon 2PT binding selectively with Zn 2+ ion, a fluorescence enhancement is observed that is attributed to an enhancement of localized emission and suppression of excited‐state intramolecular proton transfer. The described sensing system involving 2PT is also successfully applied to the detection of Zn 2+ ion in real samples with a detection limit of 7.5×10 −7 M .