Analytical Sciences

Abstract − Analytical Sciences, 14(1), 85 (1998).

Selective Ion Transfer Accompanied by a RespirationMimeticReaction at an Aqueous/Organic Solutions Interface
Kohji MAEDA, Motoki NISHIHARA, Hiroyuki OHDEand Sorin KIHARA *
Department of Chemistry,Kyoto Institute of Technology, Matsugasaki, Sakyo, Kyoto 606, Japan
When an aqueous solution (W) containing flavin mononucleotide, pyruvic acidand O2 was put into contact with anitrobenzene solution (NB) containing Na + , K + , valinomycin and aferrocene derivative, CO2 wasevolved in W and Na +was transferred from NB to W, though K + remained in NB. The above-mentionedrespiration mimetic reaction process,accompanied by the selective ion transfer, was elucidated by referring tothe ion and electron transfer voltammograms atthe W/NB interface and by taking into account the energetics of thecoupling between the ion and electron transfers. (Keywords: Respiration mimetic reaction, energy transformation,coupled charge transfer, ion transfer, electron transfer,aqueous/organic interface, voltammetry, reaction process)