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Chelator Probe with Exceptionally High Stokes Shift for Selective Detection of OAc − with Red Emission: Application as a Biosensor
Author(s) -
Pramanik Koushik,
Ghosh Pritam,
Dey Debanjan,
Malpaharia Pijush,
Chandra Swapan K,
Mukhopadhyay Subhra Kanti,
Banerjee Priyabrata
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201702386
Subject(s) - chelation , stokes shift , fluorescence , chemistry , chromogenic , biosensor , photochemistry , combinatorial chemistry , inorganic chemistry , chromatography , biochemistry , optics , physics
A novel chelator probe with flexible structural configuration has been synthesized as chemosensor for selective detection of biotic anion like OAc − by chromogenic as well as fluorogenic signal. The nitro substituted chelator probe has shown pale yellow to deep yellow coloration upon detection of OAc − ion. Significantly the emission of the chelator probe upon recognition of the anion has been turned ON in low energy region which has been explained through PET‐ESIPT‐ILCT‐C=N isomerisation based pathways. The chelator probe has shown exceptionally high stroke's shift. The host guest interaction has been confirmed by different sophisticated analytical tools such as UV‐Vis, fluorescence, 1 H‐NMR and FT‐IR. Significantly the fluorescence turn on phenomena has been utilized to detect intracellular OAc − inside candida albicans to explore the applicability of the chelator probe as bio sensor.