Jump to main content
Jump to site search


β-Carboline-imidazopyridine hybrid: A selective and sensitive optical sensor for sensing of copper and fluoride ions

Abstract

Two rationally designed β-carboline-imidazopyridine hybrid chromofluorescent sensors S1 and S2 have been successfully synthesized and evaluated for selective sensing of metal ions and anions. The synthesized sensors selectively sense copper ion through significant color change from colorless to yellow along with a shift in absorption spectrum and enhancement in their emission intensity to ‘turn on’ fluorescence mode in preferences to other metal ions. Moreover, sensors S1 and S2 also recognize fluoride ion via H-bond interaction and subsequent deprotonation to elicit a color change from colorless to yellow conspicuous through naked eyes. Detailed UV-visible analyses revealed that sensors interact with copper ion in 1:1 binding stoichiometry with detection of 10-7 M range. In addition, competing binding studies by UV-visible studies revealed that sensors exhibit more selectivity toward copper ion in comparison to fluoride ion. These experimental results were further corroborated by DFT (Density Functional Theory) calculations.

Back to tab navigation

Supplementary files

Publication details

The article was received on 17 Apr 2018, accepted on 08 May 2018 and first published on 09 May 2018


Article type: Paper
DOI: 10.1039/C8NJ01851K
Citation: New J. Chem., 2018, Accepted Manuscript
  •   Request permissions

    β-Carboline-imidazopyridine hybrid: A selective and sensitive optical sensor for sensing of copper and fluoride ions

    S. Swami, D. Behera, A. Agarwala, V. P. Verma and R. Shrivastava, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ01851K

Search articles by author

Spotlight

Advertisements