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Fluorescence modulation of naphthalene containing salicyl hydrazide‐based receptor through aggregation‐induced emission enhancement approach: Dual detection of lanthanum and cyanide ions in semi‐aqueous medium
Author(s) -
Joshi Pooja,
Ali Shah Raj,
Bhardwaj Vimal K.
Publication year - 2021
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.4025
Subject(s) - chemistry , detection limit , fluorescence , analyte , cyanide , deprotonation , aqueous solution , chelation , naphthalene , photochemistry , ion , combinatorial chemistry , inorganic chemistry , chromatography , organic chemistry , physics , quantum mechanics
The sensing activity of naphthalene containing salicyl hydrazide‐based fluorescence receptor has been improved through aggregation‐induced enhanced emission mechanism approach in semi‐aqueous medium. The receptor has been found to be selective toward La 3+ with approximately 70‐fold fluorescence enhancement due to a combined effect of keto‐enol tautomerism inhibition and chelation enhanced fluorescence with a detection limit of 3.91 × 10 −6 M. In addition, the receptor is also able to sense CN − with a detection limit of 3.55 × 10 −6 M via deprotonation effect, justifying its multiple analyte sensing behaviour. Hence, the current analytical methodology improves the sensing activity of the probe and also provides a greener alternative for La 3+ and CN – detection.