| 基于柠康酸构筑的三个配合物的合成、结构与性能 |
| Syntheses, Structures and Properties of Three Coordination Polymers Based on Citraconic Acid |
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| 摘要: 在水热条件下，制备出3个配位聚合物，即{[Zn（ca）（iimb）]·0.75H2O}n（1），{[Cd（ca）（iimb）（H2O）]·0.75H2O}n（2）和{[Zn（ca）（bpe）0.5（H2O）]·H2O}n（3）（H2ca=柠康酸，iimb=1-（1-咪唑基）-4-（咪唑基-1'-甲基）苯，bpe=1，2-二（4-吡啶基）乙烯），并通过单晶X射线衍射、红外光谱和元素分析进行结构表征。配合物1是含有一维金属羧酸链的二维网状层。2是具有羧酸桥连双核的一维准梯形链状结构。3是二维波浪层。其中2和3的三维超分子结构由丰富的氢键相互作用形成；而1的三维超分子结构通过范德华力堆积而成。研究了3个配合物的热重分析（TGA），粉末X射线衍射（PXRD）和荧光性质。固态荧光光谱表明3个配合物的发射光谱与相应的辅助配体相似。此外，配合物3在紫外光照射下，在H2O2存在时对亚甲基蓝（MB）的降解表现出良好的光催化活性。 |
| 关键词: 柠康酸 水热合成 荧光性质 光催化降解 |
| 基金项目: 国家自然科学基金（No.21571092）和河南省高等学校重点科研项目计划（No.18B150016）资助。 |
| Abstract: Three coordination polymers, {[Zn(ca)(iimb)]·0.75H2O}n (1), {[Cd(ca)(iimb)(H2O)]·0.75H2O}n (2) and {[Zn(ca)(bpe)0.5(H2O)]·H2O}n (3) (H2ca=citraconic acid, iimb=1-(1-imidazolyl)-4-(imidazol-1-ylmethyl)benzene, bpe=1,2-di(4-pyridyl)ethylene), were synthesized hydrothermally and measured structurally by single crystal X-ray diffraction, infrared spectroscopy(IR) and elemental analysis. Complex 1 displays a 2D reticular layer containing 1D metal-carboxylate chains. 2 features a 1D quasi-trapezoidal shape chain structure containing carboxylate-bridged dinuclear structures. Complex 3 shows a two-dimensional wave layer. The three-dimensional supramolecular structures of 2 and 3 are formed by abundant H-bond interactions; nevertheless, 3D supramolecular structure of 1 is formed through weak van der Waals force. Thermogravimetric analyses (TGA), powder X-ray diffractions (PXRD) and fluorescence properties for complexes 1~3 were investigated. The solid state fluorescence spectra indicate that all emission spectra of three complexes 1~3 are similar with those of the corresponding auxiliary ligands. In addition, complex 3 exhibits good photocatalytic activity for methylene blue (MB) degradation in the presence of H2O2 under UV irradiation. |
| Keywords: citraconic acid hydrothermal synthesis fluorescence property photocatalytic degradation |
| 投稿时间：2019-05-28 修订日期：2019-09-12 |
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| 李桂连,尹卫东,刘乾龙,李晓玲,辛凌云,刘广臻.基于柠康酸构筑的三个配合物的合成、结构与性能[J].无机化学学报,2019,35(12):2355-2363. |
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