Jump to main content
Jump to site search

Issue 2, 2017
Previous Article Next Article

Highly selective colorimetric detection of cyanide anions in aqueous media by triphenylamine and phenanthro(9,10-d)imidazole based probes

Author affiliations

Abstract

Two novel fluorescent probes based on triphenylamine (TPC) and phenanthro(9,10-d-imidazole) (PITP) have been synthesized and studied as cyanide selective indicators in aqueous media. Complete colour bleaching was observed due to the nucleophilic addition of cyanide to the 2-vinylmalononitrile of TPC, which results in the disruption of the extended conjugation and turns off the intramolecular charge transfer (ICT) process. Furthermore, a visible color change was observed with a large Stokes shift (108 nm) upon the addition of cyanide anions to PITP, due to the formation of hydrogen bonding between the CN anion and –NH of PITP, which increased the electron density on the donor moiety and induced strong ICT.

Graphical abstract: Highly selective colorimetric detection of cyanide anions in aqueous media by triphenylamine and phenanthro(9,10-d)imidazole based probes

Back to tab navigation

Supplementary files

Publication details

The article was received on 16 Sep 2016, accepted on 13 Dec 2016 and first published on 14 Dec 2016


Article type: Paper
DOI: 10.1039/C6PP00345A
Photochem. Photobiol. Sci., 2017,16, 255-261

  •   Request permissions

    Highly selective colorimetric detection of cyanide anions in aqueous media by triphenylamine and phenanthro(9,10-d)imidazole based probes

    A. J. Beneto and A. Siva, Photochem. Photobiol. Sci., 2017, 16, 255
    DOI: 10.1039/C6PP00345A

Search articles by author

Spotlight

Advertisements