Elucidation of Selectivity for Silver Ion Based on Metal-Induced H-Type Aggregation of Fluorescent Receptor

Taner Arslan, Merve Umutlu, Orhan Güney*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

In present work, a new substituted phthalonitrile derivative was prepared by the nucleophilic displacement reaction and then highly soluble zinc phthalocyanine (ZnPc) with four peripheral 1-hydroxyhexan-3-ylthio groups was synthesized by cyclotetramerization and characterized by FTIR, 1H and 13C NMRs spectroscopies, fluorescence and UV–vis measurements. The optical property and quantum yield of ZnPc were elucidated in mixed solvent of ethanol/water with varying compositions. The pH-dependent fluorescence and absorbance spectra of ZnPc in the absence and presence of Ag+ ions were obtained to elucidate the optimum pH value that is convenient for stable complex formation in predetermined mixture. A comparative study for recognition of Ag+ ion has been carried out to evaluate the effect of the solution parameters on selective sensing ability of ZnPc as a fluorescent receptor. Interference effect was investigated by spectrofluorometric titration based on fluorescence quenching of ZnPc upon addition of Ag+ ion in the presence of foreign metal ions. Stepwise complexation/decomplexation cycles with Na2S-titration by fluorescence quenching/enhancement were investigated to establish the reversible response rate and reusability of ZnPc toward Ag+ ions.

Original languageEnglish
Pages (from-to)365-373
Number of pages9
JournalJournal of Fluorescence
Volume30
Issue number2
DOIs
Publication statusPublished - 1 Mar 2020

Bibliographical note

Publisher Copyright:
© 2020, Springer Science+Business Media, LLC, part of Springer Nature.

Funding

This work was supported by Research Fund of the Istanbul Technical University (BAP, Project Number: 38142).

FundersFunder number
British Association for Psychopharmacology38142
Istanbul Teknik Üniversitesi

    Keywords

    • Fluorescent receptor
    • H-type aggregation
    • Selective sensing
    • Silver ion

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