Issue 30, 2019

Voltammetric characterisation of diferrocenylborinic acid in organic solution and in aqueous media when immobilised into a titanate nanosheet film

Abstract

Diferrocenylborinic acid (Fc2BOH, 1) has been synthesized in good yield via an improved synthetic path. Characterisation by nuclear magnetic resonance (NMR), mass spectrometry (HRMS), infrared spectroscopy (FTIR), X-ray crystallography, and by electrochemical methods reveal two one-electron oxidation processes for the two electronically coupled ferrocenyl moieties. The oxidation of 1 dissolved in organic media is contrasted to the oxidation of 1 in aqueous environments (by incorporation of 1 into a lamellar film of 2D titanate nanosheets on a glassy carbon electrode). Data from cyclic voltammetry and from square wave voltammetry suggest that the bridging boron can bind to nucleophiles (hydroxide, fluoride) upon oxidation of the ferrocenyl groups. A multi-pathway ECE reaction scheme is proposed. Potential applications in sensing are discussed.

Graphical abstract: Voltammetric characterisation of diferrocenylborinic acid in organic solution and in aqueous media when immobilised into a titanate nanosheet film

Supplementary files

Article information

Article type
Paper
Submitted
27 Feb 2019
Accepted
21 May 2019
First published
24 May 2019
This article is Open Access
Creative Commons BY-NC license

Dalton Trans., 2019,48, 11200-11207

Voltammetric characterisation of diferrocenylborinic acid in organic solution and in aqueous media when immobilised into a titanate nanosheet film

M. Konhefr, A. C. Sedgwick, T. D. James, K. Lacina, P. Skládal, B. R. Putra, C. Harito, D. V. Bavykin, F. C. Walsh, P. R. Raithby, G. Kociok-Köhn and F. Marken, Dalton Trans., 2019, 48, 11200 DOI: 10.1039/C9DT00881K

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