新しい電子伝達系の開発とその高分子膜への応用

概要

論文の詳細を見る
New redox systems by use of electron transfer catalysts (ETC) such as alloxans (vicinal tricarbonyl compound), viologens (1, 1'-dialkyl-4, 4'-bipyridinium), and lipoic acid (coenzyme) were described. In the reduction of viologens, lipoic acid, quinone, and water with l-alkyl-l, 4-dihydronicotinamides (model of NADH), alloxans acted effectively as ETC. Further, alloxans mediated the reduction of the insoluble quinone polymer with the insoluble polymer containing dihydronicotinamide moiety and of viologen containing membrane by membrane having dihydronicotinamide in the heterophases. It was found that viologens acted as ETC in the reduction of carbonyl compounds such as aldehydes and ketones, azobenzenes, vic-dihalides with sodium dithionite or zinc. Cross-linked membranes containing viologen units were also prepared by the reaction of copoly [acrylonitrile- (chloromethyl) styrene] or poly (γ-methyl-glutamate) with 4, 4'-bipyridyl. Electron transport from S2O42-to Fe (CN) 63+ was achieved with the resultant membranes. Electron transport in the membranes proceeded smoothly by electron diffusion between the viologen units. Dihydrolipoic acid derivatives were found to be an effective reagent for the reduction of nitrobenzene derivatives in the presence of a catalytic amount of ferrous ion. Based on a redox function of 1, 2-dithiolane _??_ 1, 3-dithiol, lipoic acid derivatives or lipoamide immobilized on hydrophiic polymers such as polyacrylamide, polyethyleneimine, and chitosan were also found to work as catalysts for the reduction of hydroxylamines with sodium borohydride in the presence of ferrous ion.
日本膜学会の論文

著者

遠藤剛
東京工業大学資源化学研究所

新しい電子伝達系の開発とその高分子膜への応用

スポンサーリンク

概要

著者

関連論文

スポンサーリンク