一例钙金属-有机骨架的合成及其结构与性质分析  

Preparation and Evaluation of Astaxanthin Composite Nanoparticles Pickering Emulsion

作　　者：王伟娟 黄丽丽 林知秋 卢冬飞 史荣会 刘耀 洪俊明[1] WANG Weijuan;HUANG Lili;LIN Zhiqiu;LU Dongfei;SHI Ronghui;LIU Yao;HONG Junming(College of Chemical Engineering,Huaqiao University,Xiamen 361021,China;School of Ecological Environment and Urban Construction,Fujian University of Technology,Fuzhou 350118,China;Fujian Highsun Chemical Technology Limited Company,Fuzhou 350500,China)

机构地区：[1]华侨大学化工学院,福建厦门361021 [2]福建理工大学生态环境与城市建设学院,福建福州350118 [3]福建省恒申化工科技有限公司,福建福州350500

出　　处：《华侨大学学报（自然科学版）》2024年第5期603-609,共7页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学基金资助项目(21901040);福建省自然科学基金资助项目(2023J01931);华侨大学校级实验教学改革与管理课题(SY2023J08)。

摘　　要：通过溶剂热合成法,获得一例钙金属-有机骨架[Ca_(2)(CH_(3)COO)_(3)(HCOO)],其中,甲酸配体由溶剂N,N-二甲基甲酰胺原位分解生成。利用X-射线单晶衍射、傅里叶变换红外光谱、热重分析和荧光分光光度法,对[Ca_(2)(CH_(3)COO)_(3)(HCOO)]晶体结构和性质进行分析与表征。结果表明:该化合物属于三斜晶系,p1空间群,晶胞参数为a=0.67186(6)nm,b=0.97579(7)nm,c=0.98460(9)nm,V=0.56305(9)nm^(3),Z=1;Ca(Ⅱ)离子(8配位)之间通过共用乙酸上的羧基氧形成一维链,链的两侧由羧基氧与Ca(Ⅱ)离子(7配位)配位形成三明治的夹层,每个夹层不断重复与乙酸配体配位形成二维层,层与层之间通过甲酸配体的两个羧基氧分别与层中两种配位模式的Ca(Ⅱ)离子连接形成三维有机骨架;该化合物具有良好的稳定性,在紫外光下可观察到绿光。A calcium metal-organic framework[Ca_(2)(CH_(3)COO)_(3)(HCOO)]was obtained by solvothermal synthesis method,in which the formic acid ligand was generated by in-situ decomposition of the solvent N,N-dimethylformamide.The crystal structure and properties of[Ca_(2)(CH_(3)COO)_(3)(HCOO)]were analyzed and characterized using X-ray single-crystal diffraction,Fourier transform infrared spectroscopy,thermogravimetric analysis and fluorescence spectrophotometry.The results show that the compound belongs to the triclinic crystal system with p1 space group,the unit cell parameters are a=0.67186(6)nm,b=0.97579(7)nm,c=0.98460(9)nm,V=0.56305(9)nm^(3),and Z=1.Ca(Ⅱ)ions(octacoordinate)form one-dimensional chains by sharing carboxyl oxygen on acetic acid,and the two sides of the chain are sandwiched by carboxyl oxygen coordinating with Ca(Ⅱ)ions(heptacoordinate)to form sandwich layers.Each sandwich layer repeatedly coordinates with acetic acid ligands to form two-dimensional layers,and the two carboxyl oxygen groups of formic acid ligands are connected to Ca(Ⅱ)ions in the two coordination modes of the layers to form a three-dimensional organic skeleton.This compound has good stability and green light can be observed under ultraviolet light.

关 键 词：钙金属-有机骨架 溶剂热合成法 晶体结构 荧光性质 

分 类 号：O641.4[理学—物理化学]