系列Ni(Ⅱ)配位超分子的合成、结构及表面光电性能  

Syntheses,Structures and Surface Photo-electric Properties of A Series of Ni(Ⅱ) Coordination Supramolecules

作　　者：金晶[1] 李丹[1] 李雷[1] 史忠丰[1] 刘东伟[1] 牛淑云[1] 张广宁[2] 

机构地区：[1]辽宁师范大学化学化工学院,大连116029 [2]辽宁师范大学功能材料化学研究所,大连116029

出　　处：《化学学报》2011年第18期2108-2116,共9页Acta Chimica Sinica

基　　金：国家自然科学基金(No.20571037);辽宁省教育厅创新团队(No.2007T092)资助项目

摘　　要：以不同的刚性有机羧酸衍生物为配体,采用水热方法合成了4个Ni(Ⅱ)的配位超分子化合物,{[Ni(bipy)(H2O)4](bdc)}(1),[Ni(PhCOO)(phen)(H2O)3](PhCOO)(2),[Ni(dcpz)(H2O)4](3),[Ni(pic)2(H2O)2](4)(H2bdc=间苯二甲酸,PhCOO=苯甲酸根,phen=1,10-邻菲咯啉,H2dcpz=吡唑-3,5-二羧酸,Hpic=吡嗪-2-甲酸,bipy=2,2'-联吡啶).通过单晶X射线衍射、XRD、表面光电压光谱(SPS)、IR和UV-Vis吸收光谱等方法对化合物进行了表征.结构解析表明,化合物(1)～(4)均为单核配合物,再通过分子间氢键连成具有1D,2D或3D氢键网络结构.重点是对比研究了配合物的SPS.4个配合物的SPS在300～800 nm范围内都呈现正的光伏响应,表明它们均具有一定的光电转换能力.讨论了配合物的结构、有机配体种类、氢键及中心金属离子的配位微环境对其表面光电性能的影响,并将SPS与UV-Vis吸收光谱进行了关联.Four Ni（Ⅱ） coordination supramolecules {[Ni（bipy）（H2O）4]·（bdc）}（1）,[Ni（PhCOO）（phen）-（H2O）3]·（PhCOO）（2）,[Ni（dcpz）（H2O）4]（3）,[Ni（pic）2（H2O）2]（4） were hydrothermally synthesized with the derivatives of different rigid organic carboxylic acid as ligands（H2bdc=m-phthalic acid,PhCOO=benzoate,H2dcpz=pyrazole-3,5-dicarboxylic acid,Hpic=2-pyrazinecarboxylic acid,bipy=2,2＇-bipyridine,phen=1,10-phenanthroline）.The crystal structures of the complexes were determined by X-ray single crystal diffraction,and complexes were characterized by surface photovoltage spectrum（SPS）,IR,UV-Vis-NIR spectra and XRD.The results indicate that complexes（1）～（4） are mononuclear complexes,connected by intermolecular hydrogen bonds into 1D,2D or 3D hydrogen-bonded network structure.Com-parative study of SPS for four complexes shows that they all exhibit positive surface photovoltage response（SPV） in the range of 300～800 nm,which indicates that they all possess certain photo-electric conversion properties.The effect of structure of the complexes,type of organic ligands,hydrogen bonds and coordina-tion environment of the central metal ions on the photo-electric properties were discussed.Furthermore,the SPS and UV-Vis spectra were interrelated.

关 键 词：Ni(Ⅱ)配位超分子 合成 结构 氢键 光电性能 

分 类 号：O641.4[理学—物理化学]