Pressure-promoted ligand to metal energy transfer for emission enhancement of[Tb_(2)(BDC)_(3)(DMF)_(2)(H_(2)O)_(2)]_n metal-organic framework  

作　　者：Yunfeng Yang Kaiyan Yuan Binhao Yang Qing Yang Yixuan Wang Xinyi Yang 杨云峰;袁开岩;杨斌豪;杨青;王艺璇;杨新一

机构地区：[1]Synergetic Extreme Condition High-Pressure Science Center,State Key Laboratory of Superhard Materials,College of Physics,Jilin University,Changchun 130012,China

出　　处：《Chinese Physics B》2025年第3期116-121,共6页中国物理B(英文版)

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.12304261 and 12274177);the China Postdoctoral Science Foundation(Grant No.2024M751076)。

摘　　要：Lanthanide metal-organic frameworks(Ln-MOFs)have received extensive attention in the development of photoluminescent(PL)materials due to their stable structures and unique line-like emission spectroscopic properties.However,in order to prepare Ln-MOFs with high PL quantum yield(PLQY),further improving the sensitization efficiency of the“antenna effect”is essential.Herein,remarkably enhanced PL in[Tb_(2)(BDC)_(3)(DMF)_(2)(H_(2)O)_(2)]_n MOF is successfully achieved via high-pressure engineering at room temperature.Notably,the PL intensity continues to increase as the pressure increases,reaching its peak at 12.0 GPa,which is 4.4 times that of the initial state.Detailed experimental and theoretical calculations have demonstrated that pressure engineering significantly narrows the bandgap of[Tb_(2)(BDC)_(3)(DMF)_(2)(H_(2)O)_(2)]_n,optimizing both singlet and triplet energy levels.Ultimately,higher antenna effect sensitization efficiency is achieved by promoting intersystem crossing and energy transfer processes.Our work provides a promising strategy for the development of high PLQY Ln-MOFs.

关 键 词：lanthanide metal-organic frameworks high pressure green light photoluminescence enhancement energy transfer 

分 类 号：O64[理学—物理化学]