Bhaswati Devi, Ankur Kanti Guha, Chandana Malakar, Arundhuti Devi
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引用次数: 2
Abstract
A Schiff base fluorescent “turn-off” sensor L based on 2, 4-diamino-6-hydroxypyrimidine, and 2-hydroxy-1-naphthaldehyde was synthesized, which shows excellent selectivity and sensitivity towards Cu2+ ions in an aqueous medium. The detection limit of the probe was found to be 11.92 µM which is much lower than the acceptable level of Cu2+ ions in drinking water as set by the World Health Organization (30 µM) and the U. S. Environmental Protection Agency (20 µM). Furthermore, a 1: 0.5 binding stoichiometry between the probe and Cu2+ ion was confirmed from the fluorescence titration data, Job’s plot, and DFT calculation. The binding constant (Ka) of Cu2+ ion with the probe was found to be 6.3 × 104 M−1. Thus, the overall study reveals that the synthesized Schiff base ligand is a potential fluorescent sensor for Cu2+ions.
Graphical abstract
The research study includes the synthesis of a novel and efficient Schiff base ligand L, which is highly sensitive and a selective fluorescent sensor for Cu2+ ions with a very low detection limit.
期刊介绍:
Journal of Chemical Sciences is a monthly journal published by the Indian Academy of Sciences. It formed part of the original Proceedings of the Indian Academy of Sciences – Part A, started by the Nobel Laureate Prof C V Raman in 1934, that was split in 1978 into three separate journals. It was renamed as Journal of Chemical Sciences in 2004. The journal publishes original research articles and rapid communications, covering all areas of chemical sciences. A significant feature of the journal is its special issues, brought out from time to time, devoted to conference symposia/proceedings in frontier areas of the subject, held not only in India but also in other countries.