系列Co-aip配聚物的合成、结构及表面光电性能  

Synthesis,Structure and Surface Photo-electric Properties of a Series of Co-aip Coordination Polymers

作　　者：丛盛美[1] 刘东伟[1] 李雷[1] 金晶[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：《高等学校化学学报》2011年第4期814-821,共8页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20571037);辽宁省教育厅项目(批准号:2007T092)资助

摘　　要：采用水热法合成了3种以5-氨基间苯二甲酸根为桥连配体的Co(Ⅱ)配聚物:[Co2(aip)2(bipy)]n.2nH2O(1),[Co(aip)(imH)]n(2)和[Co(aip)(phen)]n(3)(H2aip=5-氨基间苯二甲酸,bipy=2,2'-联吡啶,imH=咪唑,phen=1,10-邻菲啰啉).通过X射线单晶衍射、红外(IR)光谱、紫外-可见(UV-Vis)吸收光谱、元素分析、表面光电压光谱(SPS)和场诱导表面光电压光谱(FISPS)等方法对配聚物进行了表征.结构解析表明,配聚物1具有3D无限结构,配聚物2和3具有2D无限结构,但它们又分别通过氢键或π-π堆积作用进一步形成3D无限结构.在配聚物中,aip基团采取了μ3-ηo1ηo1ηo1ηo2,μ5-ηn1ηo1ηo1ηo1ηo1,μ3-ηn1ηo1ηo1和μ3-ηn1ηo1ηo1ηo1 4种配位模式.SPS和FISPS结果显示,配聚物1～3在300～800 nm范围内均呈现正的表面光伏响应(SPV),表明3个配聚物均具有一定的光电转换能力.讨论了配位环境和空间维度对配聚物表面光电响应的影响以及SPS与UV-Vis吸收光谱的对应关系.Three Co（Ⅱ） coordination polymers with the ligand of 5-aminosalicylic groups,[Co2（aip）2／5（bipy）]n·2nH2O（1）,[Co（aip）（imH）]n（2） and [Co（aip）（phen）]n（3）（H2aip=5-aminosalicylic acid,bipy=2,2＇-bipyridine,imH=imidazole,phen=1,10-phenanthroline） were synthesized by hydrothermal method.The structures were characterized by X-ray single crystal diffraction,IR spectrum,UV-Vis spectrum,elemental analysis,surface photovoltage spectroscopy（SPS） and field-induced surface photovoltage spectroscopy（FISPS）.The structural analyses indicate that complex 1 is 3D infinite coordination polymer;complexes 2 and 3 are both 2D infinite coordination polymers,and hydrogen bonds link the complexes further connect to 3D infinite structures.There are four coordination patterns of aip groups： μ3-ηo1ηo1ηo1ηo2,μ5-ηn1ηo1ηo1ηo1ηo1,μ3-ηn1ηo1ηo1 and μ3-ηn1ηo1ηo1ηo1.SPS and FISPS results reveal that complexes 1—3 exhibit positive surface photovoltage responses in the range of 300—800 nm,which indicates that the three polymers have certain photo-electric conversion properties.The influences of coordiantion enviroment and demensition for the SPS and the relationships between UV-Vis spectra and SPS were disscussed.

关 键 词：二价钴 配位聚合物 结构 表面光电压 

分 类 号：O614.812[理学—无机化学]