Fluorescence quenching studies on the interaction of a novel deepened cavitand towards some transition metal ions

Yin Li, Zsolt Csók, Péter Szuroczki, László Kollár, László Kiss, Sándor Kunsági-Máté

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

A novel 'three-level' deepened cavitand featuring a significantly sizable portal has been synthesized and its interaction with some transition metal ions has been investigated in THF/H2O binary solvent using fluorescence quenching technique. The results suggest that among the used transition metal ions including Ag+, Cd2+, Cu2+, Fe3+, Cr3+, Hg2+, La3+, Mn2+, Ni2+, Zn2+ and Co2+, only Fe3+ and Cu2+ show good quenching ability. In order to interpret the quenching mechanism, the Stern-Volmer kinetics, and the presence of both the dynamic and static quenching have been discussed. It was found that the simultaneous presence of the sphere-of-action static quenching and dynamic quenching model agrees very well with the experimental results. The limits of detection for Fe3+ and Cu2+ were found to be 2.1×10-6molL-1 (3σ) and 3.6×10-6molL-1 (3σ), respectively. Cations with potential interference, such as K+, Na+, Mg2+, Ca2+, Co2+, La3+ and Mn2+ do not have significant effects on the determinations of Fe3+ and Cu2+. This cavitand can be potentially applied as optical sensor for the detection of Fe3+ and Cu2+.

Original languageEnglish
Pages (from-to)51-56
Number of pages6
JournalAnalytica Chimica Acta
Volume799
DOIs
Publication statusPublished - Oct 17 2013

Keywords

  • Cavitand
  • Fluorescence quenching
  • The quenching sphere-of-action
  • Transition metal ions

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

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