Molecular Electrocatalysis for Oxygen Reduction by Cobalt Porphyrins Adsorbed at Liquid/Liquid Interfaces
作者:Bin Su、Imren Hatay、Antonín Trojánek、Zdeněk Samec、Tony Khoury、Claude P. Gros、Jean-Michel Barbe、Antoine Daina、Pierre-Alain Carrupt、Hubert H. Girault
DOI:10.1021/ja908488s
日期:2010.3.3
Molecular electrocatalysis for oxygen reduction at a polarized water/1,2-dichloroethane (DCE) interface was studied, involving aqueous protons, ferrocene (Fc) in DCE and amphiphilic cobalt porphyrin catalysts adsorbed at the interface. The catalyst, (2,8,13,17-tetraethyl-3,7,12,18-tetramethyl-5-p-amino-phenylporphyrin) cobalt(II) (CoAP), functions like conventional cobalt porphyrins, activating O(2)
研究了在极化水/1,2-二氯乙烷 (DCE) 界面上用于氧还原的分子电催化,涉及水性质子、DCE 中的二茂铁 (Fc) 和吸附在界面上的两亲钴卟啉催化剂。催化剂(2,8,13,17-四乙基-3,7,12,18-四甲基-5-对氨基-苯基卟啉)钴(II)(CoAP)的功能与常规钴卟啉相似,可激活O(2 ) 通过形成超氧化物结构进行配位。此外,由于氨基苯基的亲水性,CoAP 对水/DCE 界面有很强的亲和力,亲脂性映射计算和表面张力测量证明了这一点,促进了 CoAP-O(2) 复合物的质子化及其减少二茂铁。