Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 1252, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.molstruc.2021.132212
Keywords
Calix[4]arene; Syntheses; Colorimetric; Fluorescent chemosensor; Cn
Categories
Funding
- Scientific and Technological Research Council of Turkey (TUBITAK) [117Z402]
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A novel calix[4]arene derivative substituted with anthracene was synthesized and characterized for its ion binding properties. The derivative showed excellent selectivity for cyanide ions and exhibited a significant color change upon binding. The study also utilized fluorescence data and H-1-NMR techniques to calculate binding stoichiometry and elucidate the complex formation mechanism.
A new calix[4]arene derivative substituted with anthracene at its 1,3-distal position was synthesized via a simple Schiffbase reaction, and its structure was fully characterized by using ATR-FTIR, H-1-NMR, C-13-NMR, ESI-MS and elemental analysis techniques. Furthermore, the ion binding feature of the anthracene substituted calix[4]arene (Ant-Calix) was evaluated against Br-, Cl-, F-, HSO4-, NO3- and CN- ions. Various aspects of anion sensing phenomena were deeply assessed, and the findings addressed that Ant-Calix exhibited excellent selectivity for CN- and could detect in a very low detection limit 92.4 nM. Beside, when CN- ion was bound to the probe Ant-Calix, a significant color change from light green to pink color was observed under UV light. The fluorescence data was also employed to calculate the binding stoichiometry and association constant of the complex obtained between Ant-Calix and cyanide ion. In addition, the H-1-NMR technique was also used to elucidate the mechanism of the complex formation between Ant-Calix and CN-. (C) 2021 Published by Elsevier B.V.
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