两种Ln(Ⅲ)配聚物的合成、结构及光物理研究  

Syntheses,crystal structures and photophysical properties of two Ln(Ⅲ) coordination polymers

作　　者：金晶[1] 王秀艳[1] 吕春欣[1] 

机构地区：[1]辽宁师范大学化学化工学院,辽宁大连116029

出　　处：《辽宁师范大学学报（自然科学版）》2011年第1期77-80,共4页Journal of Liaoning Normal University:Natural Science Edition

基　　金：国家自然科学基金项目(20571037);辽宁省教育厅创新团队项目(2007T092)

摘　　要：采用水热合成方法得到了2种Ln(Ⅲ)配聚物[Ln(C8H7O3)3]n(Ln=Er(1)和Yb(2)).X-射线单晶结构分析表明,2个配聚物是同构的,均由对甲氧基苯甲酸根为桥形成的1D链状结构.Ln(Ⅲ)离子为8配位,8个氧原子均来自对甲氧基苯甲酸根.配体对甲氧基苯甲酸根采取桥双齿和桥三齿2种模式桥连Ln(Ⅲ)离子.通过红外光谱(IR)、电子吸收光谱(UV-Vis-NIR)及荧光光谱(FP)对配聚物进行了表征及光物理性质研究.研究表明,2种配聚物在可见区的荧光发射相对较弱.Two new coordination polymers,[Ln（C8H7O3）3]n（Ln=Er（1） and Yb（2））,have been synthesized by hydrothermal method.Single-crystal X-ray diffraction analysis indicates that two coordination polymers are isomorphous and belong to one-dimensional infinite chain structure.The Ln^3＋ ion is eight-coordinated with eight oxygen atoms from six p-C8H7O3^- groups.The p-C8H7O-3 groups adopt two coordination modes of bidentate and tridentate to bridge Ln^3＋ ions.Both polymers were characterized by the IR,UV-Vis-NIR and fluorescence spectra.Their photophysical properties were studied,which reveals that both polymers exhibit weak fluorescence emission in the visible region.

关 键 词：配聚物 晶体结构 光物理性质 

分 类 号：O614[理学—无机化学]