Electrocatalytic Carbohydrate Oxidation with 4-Benzoyloxy-TEMPO Heterogenised in a Polymer of Intrinsic Microporosity. (1st April 2015)

• Record Type: Journal Article
• Authors: Kolodziej, Adam; Ahn, Sunyhik D.; Carta, Mariolino; Malpass-Evans, Richard; McKeown, Neil B.; Chapman, Robert S.L.; Bull, Steven D.; Marken, Frank
• Is Part Of: Electrochimica acta. Volume 160(2015)
• Page Start: 195
• Page End: 201
• Publication Date: 2015-04-01
• Subjects: electrocatalysis -- fuel cell -- carbohydrate -- sensor -- multi-electron -- EC'mechanism -- catalyst heterogenisation; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.01.106
• Languages: English
• ISSNs: 0013-4686

Abstract

Graphical abstract: Abstract: The enzymeless and operationally simple electrocatalytic oxidation of carbohydrates by "heterogenised" 4-benzoyloxy-TEMPO either (i) immobilised as microcrystals at a glassy carbon electrode surface or (ii) embedded into a polymer of intrinsic microporosity (PIM-EA-TB with 1027 m 2 g −1 BET surface area and highly rigid framework structure) has been studied in aqueous phosphate buffer of pH 12. It is shown that in contrast to microcrystal deposits, 4-benzolyoxy-TEMPO co-immobilised within PIM-EA-TB give stable catalytic responses for both, stationary and rotating disc electrode systems and for oxidation of glucose, sorbitol, and sucrose. The rigidity and intrinsic microporosity of PIM-EA-TB allow (slow) substrate and product diffusion, whilst maintaining 4-benzoyloxy-TEMPO immobilised in active molecular form.