Literature DB >> 27568404

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

Santosh Kumari1, Sunita Joshi2, Amrit Sarmah3, Debi Pant4, Rajeev Sakhuja5.   

Abstract

A coumarin-indole dyad, N-((7-hydroxy-2-oxo-2H-chromen-4-yl)methyl)-1H-indole-2-carboxamide has been synthesized and characterized by 1H-NMR and 13C-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.

Entities:  

Keywords:  Coumarin; DFT; Fluorescence; Indole; Lithium; Sensor

Year:  2016        PMID： 27568404     DOI： 10.1007/s10895-016-1913-1

Source DB:  PubMed          Journal:  J Fluoresc        ISSN： 1053-0509            Impact factor:   2.217


  24 in total

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