کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
219166 | 463251 | 2013 | 8 صفحه PDF | دانلود رایگان |
Small redox active molecules such as alizarin red S are readily adsorbed and bound into redox-inactive metal–organic framework hosts such as UMCM-1. Redox activity of the bound guest molecule is of interest for electrochemical conversions and electrocatalysis within pores. For the reduction of alizarin red S charge compensating proton uptake into pores is expected. However, it is shown here that alizarin red S redox processes in UMCM-1 immersed in aqueous electrolyte, ethanolic electrolyte, and in acetonitrile electrolyte media are dominated instead by surface processes and the potential driven reductive release of leuco-alizarin red S into the surrounding solution. Self-mediation via released alizarin red S occurs, whereas in acetonitrile a cobaltocene redox mediator is employed for the potential driven redox release of alizarin red S from the UMCM-1 host lattice.
Figure optionsDownload as PowerPoint slideHighlights
► Redox activity of alizarin red S in metal-organic framework pores.
► Host degradation with associated expulsion of alizarin red S.
► Buffer effects on “pore redox processes”.
Journal: Journal of Electroanalytical Chemistry - Volume 689, 15 January 2013, Pages 168–175