系列Mn(Ⅱ)配位超分子的合成、晶体结构和表面光电压研究

Synthesis,Crystal Structure and Surface Photovoltage of a Series of Mn(Ⅱ) Coordination Supramolecules

采用水热合成方法得到了三种Mn(Ⅱ)配位超分子:Mn(2,5-dcp)2(H2O)2(1),Mn(INA)2(H2O)4(2)和Mn(phen)2Cl2(3)(2,5-dcp=pyridine-2,5-dicarboxylic acid,INA=iso-nicotinic acid,phen=1,10-phenanthroline).通过X射线单晶衍射、红外光谱(IR)、紫外光谱(UV-Vis)及表面光电压光谱(SPS)等方法对化合物进行了表征.三种化合物中均存在大量的氢键,使化合物晶体构成了无限延伸的三维网络结构.表面光电压谱显示了化合物1～3在300～600nm范围内呈现出正的光伏响应带,具有P-型半导体的特征.讨论了氢键在超分子构建中的作用以及不同配位环境对于配合物表面光电压的影响.

Three Mn（Ⅱ） coordination supramolecules Mn（2,5-dcp）2（H2O）2 （1）, Mn（INA）2（H2O）4 （2） and Mn（phen）2Cl2 （3） were synthesized by hydrothermal method （2,5-dcp=pyridine-2,5-dicarboxylic acid, INA = iso-nicotinic acid, phen= 1,10-phenanthroline）. The crystal structures of the complexes were determined by X-ray single crystal diffraction, and the complexes were characterized by IR, UV-Vis and surface photovoltage spectrum （SPS）. The existence of hydrogen bonds makes the complexes further connect to a 3D infinite net structure. The results of surface photovoltage spectra for the complexes 1-3 indicate that the complexes exhibit positive surface photovoltage responses in the range of 300-600 nm, and possess the characteristic of p-type semiconductor. The article discussed the action of hydrogen bonds in the construction of the supramolecules and the change on the surface photovoltage of complexes in the different coordination environments.