表面限定的Mn(Ⅱ)-Ru(Ⅱ)异核金属二元体的构建及其性质研究  

Construction of Surface-confined Mn(Ⅱ)-Ru(Ⅱ)Heteronuclear Metal Dyads and Investigation of Their Properties

作　　者：何惠 杨薇 代永成 HE Hui;YANG Wei;DAI Yongcheng(College of Chemical and Materials Science,Guangxi Minzu Normal University,Guangxi Chongzuo 532200,China)

机构地区：[1]广西民族师范学院化学与材料学院,广西崇左532200

出　　处：《广州化工》2025年第7期41-46,共6页GuangZhou Chemical Industry

基　　金：广西民族师范学院大学生创新创业训练计划项目资助(202310604030);广西民族师范学院校级科研项目(2021BS001)。

摘　　要：以不对称双齿-三齿单元为桥联配体,合成了新型钌(Ⅱ)配合物[Ru(phen)_2Hiptpy]~(2+){phen=1,10-菲罗啉;Hiptpy=2-(2,6-二(吡啶-2-基)吡啶-4-基)-1H-咪唑并[4,5-f][1,10]菲啰啉}。Mn^(2+)作为连接单元,在ITO电极表面修饰了Mn(Ⅱ)-Ru(Ⅱ)异核双金属二元体分子线。发现,在100 m W·cm^(-2)白光照射下(偏压-0.4 V vs.RHE,电解液为空气饱和0.1 M Na_(2)SO_(4)),该修饰电极可产生17.57μA·cm^(-2)的稳定阴极光电流。且在氧气饱和电解质中,其光电流密度较氮气饱和体系提升了2.0倍,展现出显著的光驱动氧还原催化活性。A novel Ru(Ⅱ)complex[Ru(phen)_(2)Hiptpy]^(2+)(phen=1,10-phenanthroline;Hiptpy=2-(2,6-di(pyridin-2-yl)pyridin-4-yl)-1H-imidazo[4,5-f][1,10]phenanthroline)was synthesized using an asymmetric bidentate-tridentate bridging ligand.The Mn^(2+)ion served as a linker unit to construct a heteronuclear Mn(Ⅱ)-Ru(Ⅱ)bimetallic dyad molecular wire on an ITO electrode surface.Under 100 mW·cm^(-2)white light illumination(applied bias:-0.4 V vs.RHE in air-saturated 0.1 M Na_(2)SO_(4)electrolyte),the modified electrode demonstrated a stable cathodic photocurrent density of 17.57μA·cm^(-2).Notably,in O_(2)-saturated electrolyte,the photocurrent density was 2.0-fold enhancement compared to the N_(2)-saturated system,revealing remarkable photo-driven oxygen reduction reaction(ORR)catalytic activity.

关 键 词：钌配合物 分子二元体 动力学 循环伏安 光电化学 

分 类 号：O614.8[理学—无机化学]