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Ratiometric fluorescent scaffold giving discrete response towards iodide ion: a combined experimental and DFT study
Author(s) -
Patil Rahul,
Tayade Kundan,
Sahoo Suban K,
Singh Jasminder,
Singh Narinder,
Hundiwale Dilip,
Kuwar Anil
Publication year - 2014
Publication title -
journal of molecular recognition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.401
H-Index - 79
eISSN - 1099-1352
pISSN - 0952-3499
DOI - 10.1002/jmr.2392
Subject(s) - fluorescence , iodide , detection limit , chemistry , selectivity , ion , pyridine , reproducibility , aldehyde , photochemistry , inorganic chemistry , chromatography , organic chemistry , physics , quantum mechanics , catalysis
A novel ratiometric fluorescent receptor ( Z )‐2‐(4‐[diethylamino]‐2‐hydroxybenzylideneamino) pyridine‐3‐carbaldehyde (3) bearing one phenolic OH and one aldehyde group as recognition sites was synthesized and characterized. The anion recognition behaviour of receptor 3 was evaluated by various spectroscopic (UV‐visible, fluorescence and 1 H nuclear magnetic resonance) methods and was validated by computational studies. The receptor showed fast response time, excellent selectivity and reproducibility towards iodide ion detection among the other surveyed anions, with a binding constant of 6.12 × 10 4 M −1 and a detection limit of 0.24 μM, thus confirming its potential applicability as a fluorescent sensor for iodide Copyright © 2014 John Wiley & Sons, Ltd.