系列Cu(Ⅱ／Ⅰ)配合物的制备及其表面光电压

Preparation and Surface Photovoltage of Four Cu(Ⅱ/Ⅰ) Complexes

采用水热法合成了{[Cu(phen)(H2O)(o-tpha)].H2O}n(1),[Cu2Cl4(phen)2](2),[Cu4Cl4.(bipy)2](3)和[Cu2Cl2(phen)]n(4)(bipy=2,2′-bipyridyl,phen=1,10-phenanthroline,o-H2tpha=o-phthalicacid)4个铜配合物.X射线单晶衍射结果表明,配合物1和4是具有一维无限结构的聚合物,配合物2是双核Cu(Ⅱ)配合物并由氢键连成超分子,配合物3是四核Cu(Ⅰ)簇合物.常温下测定了4个配合物的表面光电压光谱(SPS)、场诱导表面光电压光谱(FISPS)、IR和UV-Vis-NIR光谱.SPS的测试结果显示,4个化合物均在300～800nm范围内存在光伏响应带,但是它们呈现了不同的特性.配合物1～3的表面光电压光谱呈现出正的表面光伏响应(SPV),配合物4的SPS呈现出负的表面光伏响应.4个配合物的表面光伏响应带的位置、数量以及强度均有明显不同.

Four copper coordination complexes { [ Cu （phen） （ H2 O） （o-tpha） ] . H2O }n （ 1 ）, [ Cu2 Cl4 （ phen）2 ] （2）, [ Cu4 Cl4 （ bipy ）2 ] （ 3 ） and [ Cu2 Cl2 （ phen ） ]n （ 4 ） （ bipy = 2,2＇-bipyridyl, phen = 1,10 - phenanthroline, o-H2tpha = o-phthalic acid）, were hydrothermally synthesized and structurally characterized by single crystal X-ray diffraction. Complexes 1 and 4 both possess 1D infinite structure, complex 2 is a binuclear supramolecule connected by hydrogen bonds and complex 3 is a tetranuclear cluster. The surface photovoltage spectra（SPS） of four complexes all exhibit surface photovoltage responses（SPV） in the range 300-- 800 nm, however, the intensity, position and numbers of response bands are different obviously. The differences are mainly attributed to their different structures, valences and coordination environments of copper ions in the four complexes.