Journal
NEW JOURNAL OF CHEMISTRY
Volume 44, Issue 31, Pages 13259-13265Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0nj02117b
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Funding
- Council of Scientific and Industrial Research (CSIR), New Delhi [09/096(0947)/2018-EMR-I]
- DST, Government of India [DST/INSPIRE/04/2016/001948]
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A simple pyridine-dicarbohydrazide based colorimetric and fluorometric chemosensorLwas designed and synthesized for Al(3+)ion sensing in organo aqueous solution. In the presence of Al(3+)ions, probeLexhibited visible color changes and fluorescence enhancement (20-fold) due to Al(3+)induced chelation-enhanced fluorescence (CHEF) effects. ChemosensorLrevealed high selectivity toward Al(3+)ions by turn-on fluorescence among the other competitive metal ions examined with a detection limit of 0.8 mu M. ProbeLwas found to bind with Al(3+)ions in a 1 : 2 (probe : metal) stoichiometric fashion, with an association constant (K-a) of 4.26 x 10(4)M(-2). In addition, DFT and TDDFT calculations were carried out to recognize the binding nature and electronic properties of probeLand its Al-complex. Furthermore, thein situprepared [L-Al] complex was able to detect HF(2)(-)anionsviaa metal displacement strategy. The bioimaging application of Al(3+)and HF(2)(-)was implemented in living human liver cancer cells (Hep G2).
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