Highly Selective Sensing of Li+ in H2O/CH3CN via Fluorescence 'Turn-on' Response of a Coumarin-Indole Linked Dyad: an Experimental and Theoretical Study

被引：10

作者：

Kumari, Santosh ^{[1
]}

Joshi, Sunita ^{[2
]}

Sarmah, Amrit ^{[3
]}

Pant, Debi ^{[4
]}

Sakhuja, Rajeev ^{[1
]}

机构：

[1] Birla Inst Technol & Sci, Dept Chem, Pilani 333031, Rajasthan, India

[2] Charles Univ Prague, Dept Pathophysiol, Prague, Czech Republic

[3] Ben Gurion Univ Negev, Dept Chem, Negev, Israel

[4] Birla Inst Technol & Sci, Dept Phys, Pilani 333031, Rajasthan, India

来源：

JOURNAL OF FLUORESCENCE | 2016年 / 26卷 / 06期

关键词：

Coumarin; Indole; Fluorescence; Sensor; Lithium; DFT; PHOTOINDUCED ELECTRON-TRANSFER; SCHIFF-BASE; EXCITATION-ENERGIES; MOLECULAR SENSORS; CHEMOSENSOR; IONS; ALUMINUM; DESIGN; COPPER; ACID;

D O I：

10.1007/s10895-016-1913-1

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A coumarin-indole dyad, N-((7-hydroxy-2-oxo-2H-chromen-4-yl)methyl)-1H-indole-2-carboxamide has been synthesized and characterized by H-1-NMR and C-13-NMR. Effect of various metal ions on fluorescent behavior was also studied. The synthesized compound showed remarkable specificity towards Li+ in organo-aqueous medium over other metal ions. Coordination of the compound with Li+ induces a turn-on fluorescence response. The sensor exhibited good binding constant and low detection limit towards Li+. Experimental results have been verified with Density Functional Theory and Time Dependent Density Functional Theory calculations.

引用

页码：2177 / 2185

页数：9

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