Beryllium ion sensing through the ion pair formation between the electrochemically reduced ferrocenyl naphthoquinone radicals and Be 2 + ions

Secil Kirlangic Atasen, Yusuf Alcay, Ozgur Yavuz, Baris Yucel, Ismail Yilmaz*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Abstract: We explored the mechanistic aspects of ion pair formation between electrochemically reduced radicals (Fc–cnq–1a∙-/Fc–cnq–1b∙-) and dianions (Fc–cnq–1a2 -/Fc–cnq–1b2 -) of ferrocenyl naphthoquinones (Fc–cnq–1a and Fc–cnq–1b) and several metal ions by cyclic voltammetry (CV), square wave voltammetry (SWV) and spectroelectrochemistry, for the first time. The experiments demonstrated that Fc–cnq–1a2 -/Fc–cnq–1b2 - were moderately affected with Na+, K+ and Cs+ by slightly shifting to the anodic side, but were strongly influenced with Li+ ion. Fc–cnq–1a∙-/Fc–cnq–1b∙- were not affected by alkali metal ions, indicating no ion pair formation between the radicals and these ions. Fc–cnq–1a2 -/Fc–cnq–1b2 - was not evolved in the presence of Be2 +, Mg2 + and Ca2 +, but Fc–cnq–1a∙-/Fc–cnq–1b∙- appeared with their cathodic waves, and participated with intermediates, [(Fc–cnq–1b)2∙-–Be2 + and [(Fc–cnq–1a)∙-–Cl]. The most pronounced effect on the ion-pair formation of the Fc–cnq–1a∙-/Fc–cnq–1b∙- was observed in Be2 +, indicating that Fc–cnq–1a or Fc–cnq–1b can selectively sense ultra-trace amount of Be2 + (LOD = 3.6 ppb) among the other metal ions with SWV titration, for the first time, based on the strong ion pair formation reaction between the radicals and Be2 +. Graphical abstract: Synopsis Ultra-trace amount of beryllium ion (Be 2 +) sensing (LOD = 3.6 ppb) through the ion pair formation between the electrochemically reduced ferrocenyl naphthoquinone radicals (Fc–cnq–1a∙-/Fc–cnq–1b∙-) and Be 2 + ions by cyclic voltammetry (CV), square wave voltammetry (SWV), and for the first time spectroelectrochemistry is reported in this study. [Figure not available: see fulltext.].

Original languageEnglish
Article number41
JournalJournal of Chemical Sciences
Volume131
Issue number5
DOIs
Publication statusPublished - 1 May 2019

Bibliographical note

Publisher Copyright:
© 2019, Indian Academy of Sciences.

Funding

The authors gratefully acknowledge financial support from The Scientific and Technological Research Council of Turkey (TUBITAK) (Project Number: 113Z309) and Research Fund of the Istanbul Technical University. (Project Number: 1312).

FundersFunder number
TUBITAK113Z309
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu
Istanbul Teknik Üniversitesi1312

    Keywords

    • Beryllium
    • ion pair formation
    • metal sensor
    • naphthoquinone
    • spectro-electrochemistry

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