| 三角柔性多羧酸金属有机骨架化合物的合成、结构及荧光性质 |
| Syntheses, Structures and Photoluminescent Properties of Metal-Organic Frameworks Based on Triangle Flexible Multi-Carboxylic Ligand |
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| 摘要: 以柔性1，3，5-三（4-羧酸苯氧基）苯（H3TCPB）为配体，以4，4'-联吡啶（4，4'-BPY）为辅助配体，在溶剂热条件下合成了2个新颖的分别具有三核锌簇和三核钴簇的金属有机骨架化合物：{[Zn3（TCPB）2（4，4'-BPY）]·DMF·3H2O}n（1）和{[Co1.5（TCPB）（DMF）（H2O）]·DMF}n（2），通过单晶X射线衍射，红外光谱，元素分析，热重分析和粉末X射线衍射对其结构进行了表征。单晶X射线衍射分析表明化合物1属于三斜晶系，P1空间群，表现出三维（3，8）连接的网状结构，拓扑符号为：{43}2·{46·618·84}·{6}；化合物2也属于三斜晶系，P1空间群，为二维（3，6）连接的网络层状结构，拓扑符号为：{43}4·{46·618·84}。此外，荧光性质研究表明固态化合物1在室温条件下发射出源于TCPB3-和4，4'-BPY配体的淡蓝色荧光，而化合物2在相似的条件下没有荧光发射。 |
| 关键词: 柔性羧酸配体 金属有机骨架化合物 晶体结构 荧光 |
| 基金项目: 国家自然科学基金（No.21371091，21371150）资助项目。 |
| Abstract: Two novel metal-organic frameworks {[Zn3(TCPB)2(4,4'-BPY)]·DMF·3H2O}n (1) with trinuclear zinc cluster units and {[Co1.5(TCPB)(DMF)(H2O)]·DMF}n (2) with trinuclear cobalt cluster SBUs, have been prepared under solvothermal conditions based on flexible 1,3,5-tri(4-carboxyphenoxy) benzene ligand (H3TCPB) with the help of ancillary bridging N-donor pyridyl linker 4,4'-bipyridine (4,4'-BPY), and characterized by single crystal X-ray diffraction, IR spectra, elemental analyses, thermogravimetric analyses (TGA) and powder X-ray diffraction (PXRD). The single crystal X-ray diffraction analysis reveals that complex 1 crystallizes in triclinic space group P1 and exhibits three-dimensional (3D) (3,8)-connected network with Schläfli symbol of {43}2·{46·618·84}·{6}, complex 2 also belongs to the triclinic system with space group of P1 and shows two-dimensional (2D) (3,6)-connected net-like layered framework with Schläfli symbol of {43}4·{46·618·84}. In addition, the study of the solid state photoluminescent property of complex 1 indicates that it emits light blue fluorescence arising from TCPB3- and 4, 4'-BPY ligands at room temperature, while complex 2 is non-emissive under similar conditions. |
| Keywords: flexible carboxylic ligand metal-organic framework crystal structure photoluminescence |
| 投稿时间：2018-08-30 修订日期：2018-10-23 |
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| 荣介伟,章文伟.三角柔性多羧酸金属有机骨架化合物的合成、结构及荧光性质[J].无机化学学报,2018,34(12):2307-2315. |
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| Support information: 相关附件： file180467-Supporting Information.doc |
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