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Evaluation of two- and three-dimensional electrode platforms for the electrochemical characterization of organometallic catalysts incorporated in non-conducting metal–organic frameworks

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Abstract

The development of a reliable platform for the electrochemical characterization of a redox-active molecular diiron complex, [FeFe], immobilized in a non-conducting metal organic framework (MOF), UiO-66, based on glassy-carbon electrodes is reported. Voltammetric data with appreciable current responses can be obtained by the use of multiwalled carbon nanotubes (MWCNT) or mesoporous carbon (CB) additives that function as conductive scaffolds to interface the MOF crystals in “three-dimensional” electrodes. In the investigated UiO-66-[FeFe] sample, the low abundance of [FeFe] in the MOF and the intrinsic insulating properties of UiO-66 prevent charge transport through the framework, and consequently, only [FeFe] units that are in direct physical contact with the electrode material are electrochemically addressable.

Graphical abstract: Evaluation of two- and three-dimensional electrode platforms for the electrochemical characterization of organometallic catalysts incorporated in non-conducting metal–organic frameworks

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Publication details

The article was received on 16 Feb 2017, accepted on 17 Mar 2017, published on 17 Mar 2017 and first published online on 17 Mar 2017


Article type: Communication
DOI: 10.1039/C7DT00578D
Citation: Dalton Trans., 2017, Advance Article
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    Evaluation of two- and three-dimensional electrode platforms for the electrochemical characterization of organometallic catalysts incorporated in non-conducting metal–organic frameworks

    E. Mijangos, S. Roy, S. Pullen, R. Lomoth and S. Ott, Dalton Trans., 2017, Advance Article , DOI: 10.1039/C7DT00578D

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