Effect of coordination restriction on pressure-induced fluorescence evolution  

作　　者：Ziyou Zhang Te Ji Hongliang Dong Zhiqiang Chen Zhi Su 

机构地区：[1]Jiangsu Collaborative Innovation Center of Biomedical Functional Materials,College of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210046,China [2]Center for High Pressure Science and Technology Advanced Research,Shanghai 201203,China [3]Shanghai Synchrotron Radiation Facility,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China

出　　处：《Chinese Chemical Letters》2024年第12期561-565,共5页中国化学快报（英文版）

基　　金：supported by NSAF(No.U1530402);Postgraduate Research&Practice Innovation of Jiangsu Province(No.KYCX22_1548);financially supported by the National Natural Science Foundation of China(Nos.22277056,21977052);the Distinguished Young Scholars of Jiangsu Province(No.BK20230006)。

摘　　要：The usage of flexible ligands in constructing MOF materials(FL-MOFs)has been widely studied due to its numerous advantages,including the structural diversity,polynuclear MOFs,transmitting magnetic exchanges,enantioselective separation,asymmetric catalysis,etc.However,the field still faces challenges in deeply understanding the effect of ligand configuration on the properties of these materials.Here,we employ a flexible aggregation-induced emission ligand(4,4-((1E,1 E)-anthracene-9,10-diylbis(ethene-2,1-diyl))dibenzoic acid)with great mechanical stability to construct FL-MOFs to lock the ligand configuration to explore the pressure-induced evolution of the ligand with coordination restriction,involving changes in fluorescence and intermolecular interaction.In-situ high-pressure fluorescence,Raman,and FT-IR experiments have revealed that the intermolecular interaction of AIE-Mn-MOF with configuration restriction increased more rapidly than that of free AIE-L.This discovery offers valuable insights for synthesizing MOF materials with exceptional mechanical stability and significantly advances our understanding of the impact of coordination restriction in FL-MOFs on their response to external stimuli.

关 键 词：Coordination chemistry High-pressure chemistry FL-MOFs High-pressure photoluminescent Coordination restriction 

分 类 号：O641.4[理学—物理化学]