TY - JOUR
T1 - Electrochemical oxidation and reduction of PQQ using a conducting polypyrrole-coated electrode
AU - Shinohara, H.
AU - Khan, G. F.
AU - Ikariyama, Y.
AU - Aizawa, M.
PY - 1991/4/10
Y1 - 1991/4/10
N2 - PQQ (pyrrolo-quinoline quinone, methoxitin) is a prosthetic group of some oxidoreductases and a growth factor for microorganisms. In this study, reversible electrochemical oxidation and reduction of PQQ were performed using a conductive polypyrrole film-coated electrode. The electrochemical oxidation and reduction of PQQ on various electrodes, such as platinum, gold and glassy carbon electrodes, were found to occur irreversibly. The electrochemical behaviour of PQQ was characterized by cyclic voltammetry and differential pulse voltammetry. Electrochemically reduced PQQ (PQQH2) was observed directly by spectrophotometry. Furthermore, PQQ was entrapped efficiently into a thin polypyrrole film by electrochemical polymerization of pyrrole. The oxidoreductive properties of entrapped PQQ were also characterized.
AB - PQQ (pyrrolo-quinoline quinone, methoxitin) is a prosthetic group of some oxidoreductases and a growth factor for microorganisms. In this study, reversible electrochemical oxidation and reduction of PQQ were performed using a conductive polypyrrole film-coated electrode. The electrochemical oxidation and reduction of PQQ on various electrodes, such as platinum, gold and glassy carbon electrodes, were found to occur irreversibly. The electrochemical behaviour of PQQ was characterized by cyclic voltammetry and differential pulse voltammetry. Electrochemically reduced PQQ (PQQH2) was observed directly by spectrophotometry. Furthermore, PQQ was entrapped efficiently into a thin polypyrrole film by electrochemical polymerization of pyrrole. The oxidoreductive properties of entrapped PQQ were also characterized.
UR - http://www.scopus.com/inward/record.url?scp=0026137660&partnerID=8YFLogxK
U2 - 10.1016/0022-0728(91)85493-9
DO - 10.1016/0022-0728(91)85493-9
M3 - 学術論文
AN - SCOPUS:0026137660
SN - 0022-0728
VL - 304
SP - 75
EP - 84
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
IS - 1-2
ER -