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A Schiff‐based sensor with turn‐on fluorescence for selective detection of Hg 2+
Author(s) -
Wan ChinFeng,
Lin HsiangYi,
Chien Cho,
Wu AnTai
Publication year - 2014
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.2592
Subject(s) - tetrahydrofuran , schiff base , naked eye , chemistry , stoichiometry , fluorescence , turn (biochemistry) , analytical chemistry (journal) , metal , detection limit , stereochemistry , chromatography , organic chemistry , optics , biochemistry , physics , solvent
A simple Schiff‐base colorimetric receptor 1 was prepared. It exhibits an ‘off–on‐type’ mode with high sensitivity in the presence of Hg 2+ . The change in color is very easily observed by the naked eye in the presence of Hg 2+ , whereas other metal cations do not induce such a change. A Job plot indicated a 1 : 1 complexation stoichiometry between receptor 1 and Hg 2+ . The association constant for 1–Hg 2+ in Tetrahydrofuran (THF) was determined to be 1.3 × 10 9 M ‐1 using a Hill plot. Copyright © 2013 John Wiley & Sons, Ltd.