Pb(II)配位聚合物的构筑、Hirshfeld表面分析及固态荧光性质  

Construction,Hirshfeld Surface Analysis,and Solid-state Fluorescence Properties of Pb(II)Coordination Polymer

作　　者：梁毅农 赵九州 徐娅蓉 孙赞 LIANG Yinong;ZHAO Jiuzhou;XU Yarong;SUN Zan(School of Chemistry and Materials Science,Qinghai Minzu University,Xining 810007,China)

机构地区：[1]青海民族大学化学与材料科学学院,青海西宁810007

出　　处：《合成化学》2025年第1期8-14,共7页Chinese Journal of Synthetic Chemistry

基　　金：青海省自然科学基金资助项目(2020-ZJ-964Q)。

摘　　要：配位聚合物由于其独特的光学性质引起科学家的广泛关注。本文在溶剂热条件下,以胡椒酸(HBDCA)和1,10-菲啰啉(phen)为配体,Pb(NO_(3))_(2)为金属盐合成了一例单核铅配合物[Pb(BDCA)_(2)(phen)](1)并研究了其晶体结构。单晶X-射线衍射表明:配合物1属单斜晶系,P21/n空间群,晶胞参数为a=1.2508(4)nm,b=1.3342(4)nm,c=1.5451(5)nm和β=107.417(6)°,分子式为C_(28)H_(18)N_(2)O_(8)Pb。在每个不对称单元中,配体连接金属形成单核结构,其可通过C—H···π、C—H···O和π···π堆积等相互作用将结构扩展为3D超分子结构。Hirshfeld分析了分子与分子间的相互作用。固体荧光结果表明:在最大激发波长(λ=373 nm)激发下,配合物1呈现出较宽的发射光谱(450~550 nm),最大发射波长为500 nm,配合物1的荧光量子产率为6.62%。The optical properties of coordination polymers have drawn much interest of scientists,making them a subject of great fascination.In this paper,a mononuclear complex[Pb(BDCA)_(2)(phen)](1)was synthesized under solvent thermal synthesis using 1,3-benzodioxole-5-carboxylic acid(HBDCA),1,10-phenanthroline(phen)as ligands,and Pb(NO_(3))_(2)as a metal salt,and its crystal structure was studied.Crystallographic analysis shows that complex 1 crystallizes in the P21/n space group of monoclinic crystal system,with unit cell parameters a=1.2508(4)nm,b=1.3342(4)nm,c=1.5451(5)nm,andβ=107.417(6)°,and the molecular formula was C_(28)H_(18)N_(2)O_(8)Pb.In asymmetric unit,ligands connect to metals to form a mononuclear structure,which can be achieved through C-H···O,C-H···πandπ···πstacking interactions expand the structure into a 3D supramolecular structure.Hirshfeld analyzed the interactions between the adjacent molecules.The solid-state fluorescence results indicate that under the maximum excitation wavelength(λ=373 nm),complex 1 exhibited a wide emission spectrum(450~550 nm),with a maximum emission wavelength of 500 nm.The fluorescence quantum yield of complex 1 was 6.62%.

关 键 词：溶剂热合成 Pb配合物 晶体结构 Hirshfeld表面分析 荧光性能 

分 类 号：O641.4[理学—物理化学]