Oxidation of Cysteine by Electrogenerated Hexacyanoferrate(III) in Microliter Droplets.

ABSTRACT: Chemical reactivity in droplets is often assumed to mimic reactivity in bulk, continuous water. Here, we study the catalytic oxidation of cysteine by electrogenerated hexacyanoferrate(III) in microliter droplets. These droplets are adsorbed onto glassy carbon macroelectrodes and placed into an immiscible 1,2-dichloroethane phase. We combined cyclic voltammetry, optical microscopy, and finite element simulations to quantify the apparent bimolecular rate constant, k_c,app, in microdroplets and bulk water. Statistical analyses reveal that the apparent bimolecular rate constant (k_c,app) values formicrodroplets are larger than those in the continuous phase. Reactant adsorption to the droplet boundary has previously been implicated as the cause of such rate acc

SUBMITTER: Vannoy KJ 

PROVIDER: S-EPMC10232928 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature