摘要
Two Mn(II)coordination supramolecules,[Mn2(C8H7O2)4(phen)2(μ-H2O)](1)and [Mn2(btec)(phen)2(H2O)6].2H2O(2)(phen=1,10-phenanthroline,H4btec=1,2,4,5-benzenetetracarboxylic acid),were synthesized by hydrothermal method.The crystal structures of the complexes were determined by X-ray single crystal diffraction.The result indicates that(1)and(2)are both binuclear Mn(II)complexes.The existence of hydrogen bonds makes the binuclear complexes become further connected to coordination su-pramolecules,which possess 1D and 3D infinite structures respectively.The complexes were identified by IR,UV-Vis,surface photovoltage spectrum(SPS)and field-induced surface photovoltage spectrum(FISPS).The results of SPS for the complexes indicate that they both exhibit positive surface photo-voltage response bands in the range of 300―600 nm.The SPS phase spectrum and FISPS of com-plexes indicate that they show certain p-type semiconductor characteristic.However,the intensity,position and number of the SPV response bands are different obviously.The difference of the SPV re-sponse bands is mainly attributed to the different structures of the complexes and the different coor-dination environment of Mn(Ⅱ)in the two complexes.This paper discusses the action of hydrogen bonds in the construction of the supramolecule and the change on the surface photovoltage of com-plex in different coordination environment.
Two Mn（Ⅱ） coordination supramolecules, [Mn2（C8HTO2）4（phen）2（p-H20）] （1） and [Mn2（btec）（phen）2（H2O）6]·2H2O （2） （phen=1,10-phenanthroline, H4btec=1,2,4,5-benzenetetracarboxylic acid）, were synthesized by hydrothermal method. The crystal structures of the complexes were determined by X-ray single crystal diffraction. The result indicates that （1） and （2） are both binuclear Mn（Ⅱ） complexes. The existence of hydrogen bonds makes the binuclear complexes become further connected to coordination supramolecules, which possess 1D and 3D infinite structures respectively. The complexes were identified by IR, UV-Vis, surface photovoltage spectrum （SPS） and field-induced surface photovoltage spectrum （FISPS）. The results of SPS for the complexes indicate that they both exhibit positive surface photovoltage response bands in the range of 300-600 nm. The SPS phase spectrum and FISPS of complexes indicate that they show certain p-type semiconductor characteristic. However, the intensity, position and number of the SPV response bands are different obviously. The difference of the SPV response bands is mainly attributed to the different structures of the complexes and the different coordination environment of Mn（ll） in the two complexes. This paper discusses the action of hydrogen bonds in the construction of the supramolecule and the change on the surface photovoltage of complex in different coordination environment.
基金
the National Natural Science Foundation of China(Grant Nos.20571037 and 90201018)
关键词
锰配位超分子
晶体结构
表面光电性能
氢键结合
Mn（Ⅱ）, coordination supramolecules, crystal structure, hydrogen bond, surface photovoltage
