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四咪唑基卟啉构筑的Zn(Ⅱ)配位聚合物的结构和性质研究
Structures and properties of Zn(Ⅱ)-coordination polymers constructed from tetraimidazolyl-based porphyrin
【摘要】 以5,10,15,20-四(4-(1-咪唑基)苯基)卟啉(H2tipp)为配体,Zn(Ⅱ)为金属中心,通过调控阴离子种类合成了2种卟啉配位聚合物:[Zn3(tipp)(CH3COO)4(H2O)]·0.5DMA (1)和[Zn3(tipp)Cl4(H2O)]·0.5DMA (2).单晶结构分析表明,化合物(1)和(2)结晶于单斜C2/c空间群,每个独立单元中包含0.5个tipp2-配体、1.5个Zn(Ⅱ)离子、1个配位水分子、2个配位阴离子和游离溶剂.两个化合物具有相似的一维链状结构,并通过苯环和吡咯环间的C—H…π相互作用拓展为三维超分子框架.此外,热重曲线表明制备的配位聚合物具有良好的热稳定性.紫外-可见漫反射光谱显示化合物(1)和(2)具有宽泛的可见光吸收范围和良好的光吸收能力.固体光致发光光谱证明化合物(1)和(2)在410 nm波长激发下有明显的发射峰.
【Abstract】 By adjusting anions, two porphyrinic coordination polymers, [Zn3(tipp)(CH3COO)4(H2O)]·0.5 DMA(1) and [Zn3(tipp)Cl4(H2O)]·0.5 DMA(2) were synthesized by utilizing 5,10,15,20-tetrakis(4-(imidazol-1-yl)phenyl)porphyrin(H2tipp) as ligand and Zn(Ⅱ) as metal center.Single-crystal X-ray diffraction analyses reveal that compound(1) and(2) crystallize in monoclinic C2/c space group.Each individual unit contains half tipp2- ligand, one and a half Zn(Ⅱ) ion and two coordinated anions.Both compounds exhibit similar 1 D chain structures, which are further extended to 3 D supramolecular architectures through C—H…π interactions.In addition, thermogravimetric curves demonstrate that compound(1) and(2) have better thermal stability.The UV-vis diffuse reflectance spectra show that compounds(1) and(2) have broad visible light absorption range and excellent light absorption ability.In the end, the solid-state photoluminescence spectra verify compounds(1) and(2) have obvious emission peaks upon excitation at 410 nm.
【Key words】 porphyrin; coordination polymer; imidazole; crystal structure;
- 【文献出处】 吉林师范大学学报(自然科学版) ,Journal of Jilin Normal University(Natural Science Edition) , 编辑部邮箱 ,2021年04期
- 【分类号】O641.4
- 【下载频次】213