Color-tunable hypersensitive temperature sensor based on metal organic framework doped with Eu^(3+)and Dy^(3+)via phonon-assisted energy transfer  

作　　者：Mingze Zhang Lin Lin Zhuohong Feng Zhezhe Wang Yuanming Yang Wenjun Ma Jieyi Cai Pan Lu Siyi Jia Zhiqiang Zheng 

机构地区：[1]College of Physics and Energy,Fujian Normal University,Fuzhou,350117,China [2]Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials,Fuzhou,350117,China [3]Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering,Fuzhou,350117,China

出　　处：《Journal of Rare Earths》2023年第11期1662-1669,I0001,共9页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (12074068);Fund of National Engineering Research Center for Optoelectronic Crystalline Materials (OCM-2020-04);Natural Science Foundation of Fujian Province of China (2019J01283,2020J01190,2020J01194,2021J01183)。

摘　　要：In this work,catena-[(μ-benzene-1,3,5-tricarboxylato)-(1,10-phenanthroline)-(N,N-dimethylfo rmamide)-gadolinium(ⅲ)-N,N-dimethylformamide solvate](denoted as Gd-MOF)co-doped with Eu^(3+)and Dy^(3+)was successfully synthesized.The entire X-ray diffraction peaks of the sample match well with the GdMOF phase.A detailed characterization by inductively coupled plasma mass spectrometry(ICP-MS)shows that the actual concentration is basically consistent with the design concentration.The temperature sensing properties of Gd-MOF:Eu^(3+),Dy^(3+)were analyzed by temperature-dependent fluorescence spectra from 213 to 453 K.As temperature rises,the emission color of Gd-MOF:Eu^(3+),Dy^(3+)changes from yellow to red.The relative sensitivity reaches a maximum of 5.87%/K at 383 K in the Gd-MOF:1%Eu^(3+),30%Dy^(3+)sample.The high relative sensitivity of this MOF is due to the phonon-assisted energy transfer from Dy^(3+)to Eu^(3+),which is proved via fluorescence decay curves and fluoresce nce spectra.The major route of this energy transfer is^(4)F_(9/2)(Dy^(3+))→^(5)D_(1)(Eu^(3+)).

关 键 词：Rare-earth doped phosphors Tempetature sensor MOF Phonon-assisted energy transfer 

分 类 号：O62[理学—有机化学]