Synthesis of Highly Luminescent LnMOFs through Structural Regulation

• 作者: YU Xiao-Bo CHEN Zhao MA Yuan-Jie LI Ling CHANG Wen-Ting LI Bo ZENG Cheng-Hui
• 来源期刊: 结构化学
• 年，卷（期）: 2022,（3）
• 页码范围: 270-276
• 页数: 7页
• 语种: 英文
• DOI: 10.14102/j.cnki.0254-5861.2021-0013

摘要

Two series of three dimensional(3D)lanthanide metal-organic frameworks(LnMOFs)of[Ln(tftpa)1.5(phen)(H2O)]n(Ln=Sm 1a,Eu 1b,Tb 1c,Dy 1d,H2tftpa=tetrafluoroterephthalic acid,phen=1,10-phenanthrolin)and[Ln(tftpa)1.5(bpy)(H2O)]n(Ln=Sm 2a,Eu 2b,Tb 2c,Dy 2d,bpy=2,2'-bipyridine)are obtained by structural regulation.Results reveal that the 3D LnMOFs show high water-and thermal-stability.Interestingly,through selecting the perfluorinated ligand,and using bpy as an auxiliary ligand to hold back the solvents near to the lanthanide ions,2b,and 2c show high luminescence quantum yield(QY)of 74.50％and 60.03％,respectively.In order to further improve the luminescence QY,the auxiliary ligand of phen with larger conjugation and more rigid structure is synthesized to replace bpy,and fortunately,higher luminescence QY of 80.73％(1b)and 75.17％(1c)are realized.