“…Voltammetry of 2,6-diphenylpyrylium perchlorate on platinum at scan rates in excess of 10 5 V s À1 has been published by Amatore [23,25], in which the reverse peak has been resolved. It was noted that, due to ohmic distortions, a precise determination of k EC 2 directly from the fast-scan data was not possible, so an indirect method was used.…”