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采用水热方法合成了两个具有新颖结构的Mn(Ⅱ)配位超分子化合物,[Mn2(C8H7O2)4(phen)2(μ-H2O)](1),[Mn2(btec)(phen)2(H2O)6]·2H2O(2),(phen=1,10-phenanthroline,H4btec=1,2,4,5-benzenetetracarbo-xylic acid).通过X射线单晶衍射、红外光谱(IR)和紫外光谱(UV-Vis)等方法对化合物进行了表征.结果表明,化合物(1)和(2)均为双核Mn(Ⅱ)配合物,而且分别由氢键连接成为具有1D和3D无限结构的配位超分子.测定了化合物的表面光电压光谱(SPS)和场诱导表面光电压光谱(FISPS).结果表明,两个化合物的SPS均在300～600nm范围内呈现正的表面光伏响应(SPV),但是SPV的强度、位置、谱峰的数量明显不同.这主要是由于配合物的结构和中心金属Mn(Ⅱ)离子所处的配位环境不同引起的.化合物的表面光电压相位谱和FISPS表明它们均具有一定的p-型半导体的特征,并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.
Two novel Mn (Ⅱ) coordination supramolecular compounds [Mn2 (C8H7O2) 4 (phen) 2 (μ-H2O)] (1) and [Mn2 (btec) 2 (H2O) 6] · 2H2O (2), (phen = 1,10-phenanthroline, H4btec = 1,2,4,5-benzenetetracarbo-xylic acid) (1) and (2) were all binuclear Mn (Ⅱ) complexes, which were connected by hydrogen bonds to have the 1D and 3D infinite structures, respectively The complexes were characterized by surface photovoltage spectroscopy (SPS) and field-induced surface photovoltage spectroscopy (FISPS). The results showed that both compounds exhibited positive surface photovoltage responses (SPV) in the range of 300-600 nm, However, the intensity, position and peak number of SPV are obviously different, which is mainly due to the difference of coordination structure between the complex and the central metal Mn (Ⅱ) ion.The surface photovoltage phase spectra and FISPS of the compound show that they All have certain characteristics of p-type semiconductors, and discussed the role of hydrogen bonding in supramolecular construction and the effect of different coordination environments on the surface of the complex Effects of voltage.