Novel Isophthalohydrazide-cDB24C8 cryptand derivative for the selective recognition of fluoride ion: An experimental and DFT study

被引：5
作者：
Bora, Sankar Jyoti [1 ]
Dutta, Rakesh [2 ]
Kalita, Dhruba Jyoti [2 ]
Chetia, Bolin [1 ]
机构：
[1] Dibrugarh Univ, Dept Chem, Dibrugarh 786004, Assam, India
[2] Gauhati Univ, Dept Chem, Gauhati 781014, Assam, India
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2018年 / 204卷
关键词：
Cryptand; Fluoride; OFT study; Fluorescence; Anion sensing; RECEPTOR CHEMISTRY HIGHLIGHTS; CHARGE NEUTRAL THIOUREA; NAKED-EYE DETECTION; ANION RECEPTOR; MOLECULAR RECOGNITION; SPECIAL-ISSUE; PET SENSORS; FLUORESCENT; UREA; CHEMOSENSORS;
D O I：
10.1016/j.saa.2018.06.055
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
A highly selective and sensitive novel lsophthalohydrazide-cDB24C8 cryptand derivative was developed for fluoride recognition at a very low concentration of 231 x 10(-10) M. The binding was established by UV-Vis, fluorescence and H-1 NMR titration. The receptor formed very strong H-bonded complex with fluoride, furnished a sharp new UV-Vis absorption peak at 280 nm which was also supported by the DFT-study. The fluorescence emission spectra showed large quenching up to 79.13% upon addition of fluoride. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：225 / 231
页数：7
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