双膦银配合物的原位合成及其光电流响应

In-situ Synthesis and Photocurrent Response of A Diphosphine Silver Complex

以一种双膦配体bdppeda(N,N-二(二苯基膦基亚甲基)乙二胺)与AgBr在含HCHO环境下反应,得到了一个双核配合物[Ag_(2)(L)_(2)(μ-Br)_(2)](1,L=N,N-二(二苯基膦基亚甲基)四氢咪唑)。对其进行了元素分析、核磁、红外、电喷雾质谱和单晶X-射线衍射等表征。结果表明含有四氢咪唑环结构的配体L为反应中原位产生。配合物1具有[Ag_(2)(μ-Br)_(2)]环与两个L配体连接而成的蝶形结构。在氙灯照射下,1产生了稳定、快速、可重复的光电流响应,电流密度达14.2μA·cm^(-2)。

Reaction of AgBr with bdppeda(N,N-bis(diphenylphosphanylmethyl)ethylenediamine)in the presence of HCHO afforded a dinuclear complex[Ag_(2)(L)_(2)(μ-Br)_(2)](1,L=N,N-bis(diphenylphosphanylmethyl)-tetrahydroimidazole).This complex was fully characterized by elemental analysis,1H NMR,31 P{1H}NMR,IR spectroscopy,electrospray ionization(ESI)mass spectra and single crystal X-ray diffaraction.The ligand L bearing tetrahydroimidazole ring was in situ-formed.During 1,one[Ag_( 2)(μ-Br)_(2)]ring was bridged by two L ligands to form a butterfly-shaped structure.Under Xe-lamp irradiation,1 exhibited a steady,fast and repeatable photocurrent response with the current density up to 14.2μA·cm^(-2).