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Pyrazolone as a recognition site: Rhodamine 6G‐based fluorescent probe for the selective recognition of Fe 3+ in acetonitrile–aqueous solution
Author(s) -
Parihar Sanjay,
Boricha Vinod P.,
Jadeja R. N.
Publication year - 2015
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.2709
Subject(s) - moiety , acetonitrile , rhodamine 6g , aqueous solution , fluorescence , pyrazolone , chemistry , rhodamine , naked eye , photochemistry , combinatorial chemistry , molecule , detection limit , organic chemistry , chromatography , physics , quantum mechanics
ABSTRACT Two novel Rhodamine–pyrazolone‐based colorimetric off–on fluorescent chemosensors for Fe 3+ ions were designed and synthesized using pyrazolone as the recognition moiety and Rhodamine 6G as the signalling moiety. The photophysical properties and Fe 3+ ‐binding properties of sensors L 1 and L 2 in acetonitrile–aqueous solution were also investigated. Both sensors successfully exhibit a remarkably ‘turn‐on’ response, toward Fe 3+ , which was attributed to 1: 2 complex formation between Fe 3+ and L 1 /L 2 . The fluorescent and colorimetric response to Fe 3+ can be detected by the naked eye, which provides a facile method for the visual detection of Fe 3+ . Copyright © 2014 John Wiley & Sons, Ltd.