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

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

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.

0300-9246
11200-11207
Konhefr, Martin
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Sedgwick, Adam C.
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James, Tony D.
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Lacina, Karel
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Skládal, Petr
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Putra, Budi Riza
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Harito, Christian
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Bavykin, Dmitry V.
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Walsh, Frank C.
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Raithby, Paul R.
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Kociok-Köhn, Gabriele
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Marken, Frank
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Konhefr, Martin
73e632b4-6df9-4a58-8f7c-3d82df94e32b
Sedgwick, Adam C.
7329dac0-8976-4885-bbe9-6edb9d1ab017
James, Tony D.
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Lacina, Karel
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Skládal, Petr
cbb90e4f-6fdf-4304-8ef0-1a892fba88c5
Putra, Budi Riza
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Harito, Christian
d146fa4e-fa33-40fc-b4b2-f4a77e0e75e6
Bavykin, Dmitry V.
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Walsh, Frank C.
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Raithby, Paul R.
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Kociok-Köhn, Gabriele
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Marken, Frank
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Konhefr, Martin, Sedgwick, Adam C., James, Tony D., Lacina, Karel, Skládal, Petr, Putra, Budi Riza, Harito, Christian, Bavykin, Dmitry V., Walsh, Frank C., Raithby, Paul R., Kociok-Köhn, Gabriele and Marken, Frank (2019) Voltammetric characterisation of diferrocenylborinic acid in organic solution and in aqueous media when immobilised into a titanate nanosheet film. Dalton Transactions, 48 (30), 11200-11207. (doi:10.1039/c9dt00881k).

Record type: Article

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.

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Accepted/In Press date: 21 May 2019
e-pub ahead of print date: 24 May 2019
Published date: 14 August 2019

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Local EPrints ID: 433702
URI: http://eprints.soton.ac.uk/id/eprint/433702
ISSN: 0300-9246
PURE UUID: 46cbd666-6bde-435c-af1e-fea3eedc91f9

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Date deposited: 02 Sep 2019 16:30
Last modified: 21 Nov 2021 17:51

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Contributors

Author: Martin Konhefr
Author: Adam C. Sedgwick
Author: Tony D. James
Author: Karel Lacina
Author: Petr Skládal
Author: Budi Riza Putra
Author: Christian Harito
Author: Frank C. Walsh
Author: Paul R. Raithby
Author: Gabriele Kociok-Köhn
Author: Frank Marken

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