A phenothiazine-based "naked-eye" fluorescent probe for the dual detection of Hg2+ and Cu2+: Application as a solid state sensor

Matinder Kaur, Min Ju Cho, Dong Hoon Choi

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

A phenothiazine-based colorimetric and fluorescent probe (3) for Hg2+ and Cu2+ was designed and synthesized. Probe 3 showed high selectivity and sensitivity toward Hg2+ and Cu2+ over other metal ions. This probe works as a chemodosimeter based on the Kucherov reaction for the selective detection of Hg2+. Copper recognition is based on soft-soft metal interactions with the -S and -N atoms of the probe 3. Probe 3 exhibited a red-shift in the absorption spectra from 449 to 606 nm for Hg2+ and at 612 nm for Cu2+ that is accompanied by significant color changes from orange to dark blue and blackish-blue. Probe 3 could be used as a solid state (test paper, TLC plates) optical sensor for the selective detection of Hg2+ and Cu2+. The binding process was confirmed by UV-vis absorption, fluorescence measurements, IR, 1H NMR and mass spectroscopy.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalDyes and Pigments
Volume125
DOIs
Publication statusPublished - 2016 Feb 1

Keywords

  • Colorimetric probe
  • Copper sensor
  • Kucherov reaction
  • Mercury sensor
  • Phenothiazine
  • Solid state sensor

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Process Chemistry and Technology

Fingerprint Dive into the research topics of 'A phenothiazine-based "naked-eye" fluorescent probe for the dual detection of Hg<sup>2+</sup> and Cu<sup>2+</sup>: Application as a solid state sensor'. Together they form a unique fingerprint.

  • Cite this