Journal
JOURNAL OF FLUORESCENCE
Volume 31, Issue 4, Pages 1143-1151Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10895-021-02749-6
Keywords
Calixarene; Synthesis; Quinoline; Sensor; Copper (II); Fluorescence quenching
Funding
- Scientific and Technological Research Council of Turkey (TUBITAK) [117Z402]
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In this study, a novel quinoline-functionalized calix [4] arene derivative (Quin-Calix) was successfully synthesized and characterized. The cation-binding property of Quin-Calix towards various metal ions was investigated, revealing a high affinity and selectivity, particularly for Cu2+ ion. The mechanism of quenching was elucidated using the Stern-Vohmer equation.
A novel quinoline-functionalized calix [4] arene derivative (Quin-Calix) has been successfully synthesized at partial cone conformation and duly characterized by using FTIR, H-1-NMR, C-13-NMR, ESI-MS and elemental analysis techniques. Moreover, the cation-binding property of the calix [4] arene derivative (Quin-Calix) has been investigated towards Cu2+, Ba2+, Cd2+, Co2+, Ni2+, Zn2+ and Fe3+ ions, and the recognition event monitored by UV-Vis absorption and fluorescence studies. The results indicated that Quin-Calix displays a remarkable affinity and selectivity only for Cu2+ ion. The binding constant and stoichiometry of the complex formed between Quin-Calix and Cu2+ ion have been also calculated from the fluorescence data. In addition, Stern-Vohmer equation has been used to elucidate the mechanism of quenching.
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