基于三角型三羧酸配体的微孔Pr-MOF的晶体结构、表征和原位合成量热研究  

Crystal Structure,Characterization and Calorimetric in Situ Synthesis of Microporous Pr-MOF Based on Triangular Tricarboxylic Acid Ligand

作　　者：王智香[1] 任小杰 袁娜娜 任宜霞[1] WANG Zhixiang;REN Xiaojie;Yuan Nana;REN Yixia(College of Chemistry and Chemical Engineering,Yan’an University,Yan’an 716000,Shaanxi,China;Xiasiwan Oil Production Plant,Yanchang Oilfield Company Ltd,Yan’an 716000,Shaanxi,China)

机构地区：[1]延安大学化学与化工学院,陕西延安716000 [2]延长油田股份有限公司下寺湾采油厂,陕西延安716000

出　　处：《咸阳师范学院学报》2024年第2期25-30,共6页Journal of Xianyang Normal University

基　　金：国家自然科学基金项目(22063010);陕西青年创新团队项目。

摘　　要：以4,4',4''-三嗪-2,4,6-三基三苯甲酸(H_(3)TATB)的三角型三羧酸为有机配体,在水热条件下与硝酸镨反应合成了一种新型Pr-MOF微孔材料,命名为[Pr(TATB)(H_(2)O)](1)。晶体结构分析表明,该配合物具有以共边缘双核金属单元为特征的三维骨架。气体吸附实验表明,配合物具有微孔性,且对CO_(2)的吸附性能优于N_(2)。固态发射光谱表明,配合物在可见光范围内有特征发射。采用微量热法在413.15 K模拟了1的原位合成过程,结果表明配合物的合成过程可分为三个阶段,获得结晶过程的反应速率常数为k=2.91×10^(-10)。One new microporous Pr(III)-MOF,named as[Pr(TATB)(H_(2)O)](1),has been synthesized from 4,4',4''-triazine-2,4,6-triyl-tribenzoate(H_(3)TATB)with praseodymium salt under hydrothermal conditions.Structural analysis shows the complex exhibits a three-dimensional framework featuring the co-edged binuclear metal units.The CO_(2)/N_(2) adsorption experiments of 1 demonstrate the higher CO_(2) uptake and the microporous structure.The luminescence spectra of 1 have been studied in the solid state and display characteristic transitions of the Pr^(3+)ion in the visible light range.The synthesis process of 1 could be divided into three stages when simulated by microcalorimetry in situ at 413.15 K,and the reaction rate constant of crystallizing is gained with the value of k=2.91×10^(-10).

关 键 词：配合物 晶体结构 发光性质 原位量热法 

分 类 号：O641.12[理学—物理化学]