Jump to main content
Jump to site search

Issue 6, 2018
Previous Article Next Article

Chromo-luminescent selective detection of fluoride ions by a copper(II) bis(terpyridine) complex solution via a displacement approach

Author affiliations

Abstract

Herein, for the first time, we have reported a copper(II) bis(terpyridine) complex solution for instant ‘naked eye’ chromo-luminescent selective detection of fluoride ions in an acetonitrile medium at micromolar concentration. The copper complex [Cu(II) (L)2] (NO3)2 [where L = 4′-(4-N,N′-dimethylaminophenyl)-2,2′:6′,2′′-terpyridine] was characterized by mass spectroscopy and the terpyridine ligand by 1H NMR spectroscopy. The complex solution selectively discriminates F ions from other anions such as AcO, Br, Cl, CN, H2PO4, HSO4, and I in acetonitrile media via exceptional optical changes. The optical changes were evaluated by UV-visible and fluorescence techniques. Studies on the binding characteristics of the copper complex solution with fluoride ions revealed a displacement of copper ions from the complex solution as CuF2 resulting in the significant optical changes. Furthermore, displacement of Cu(II) from the complex was established by means of mass spectroscopy in the presence of 20 equivalents of fluoride ions. The limit of detection (LOD) was found to be 5.07 μM which is within the permissible range of fluoride ions in drinking water set by the World Health Organization (WHO).

Graphical abstract: Chromo-luminescent selective detection of fluoride ions by a copper(ii) bis(terpyridine) complex solution via a displacement approach

Back to tab navigation

Supplementary files

Publication details

The article was received on 14 Mar 2018, accepted on 12 May 2018 and first published on 14 May 2018


Article type: Paper
DOI: 10.1039/C8PP00108A
Citation: Photochem. Photobiol. Sci., 2018,17, 815-821
  •   Request permissions

    Chromo-luminescent selective detection of fluoride ions by a copper(II) bis(terpyridine) complex solution via a displacement approach

    A. K. Purohit, S. K. Padhan, J. R. Mohanty and P. K. Kar, Photochem. Photobiol. Sci., 2018, 17, 815
    DOI: 10.1039/C8PP00108A

Search articles by author

Spotlight

Advertisements