Kemiska sektionen

Edgar's, Souvik's and Sonja's paper in Dalton Trans.

2017-05-12

A technique is developed for electrochemical measurements of non-conducting MOF-catalyst composites with no need of growing them on the electrode

Mijangos, E., Roy, S., Pullen, S., Lomoth, R. & Ott, S. Evaluation of two- and three-dimensional electrode platforms for the electrochemical characterization of organometallic catalysts incorporated in non-conducting metal–organic frameworks. Dalton Trans. (2017). doi: 10.1039/c7dt00578d

 



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.

Nyheter