Viologen linked-N-substituted pyrroles were prepared and polymerized by electrochemical oxidation on glassy carbon, giving viologen-modified electrodes. The electrons were transferred from the modified electrode to O2 through the viologen moiety. The modified electrode worked as reactive electrodes for the selective electrocatalytic reduction of O2 to H2O2.
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Kijima et al. (1994) studied this question.
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