摘要
Self-calibrating luminescent thermometry employing luminescence within the optical transparency windows provides a promising prospect for temperature measurement in the biological fields.In this work,a new Nd^(3+)/Yb^(3+)-codoped metal-organic framework Nd_(0.95)Yb_(0.05)BPTC showing threedimensional anionic network,obtained by reacting ligand[1,1’-biphenyl]-3,3’,5,5’-tetracarboxylic acid(H4BPTC)with Nd^(3+)and Yb^(3+)ions under solvothermal conditions,is reported.Upon 808 nm photoexcitation,Nd_(0.95)Yb_(0.05)BPTC simultaneously emits the characteristic near-infrared luminescence of Nd^(3+)and Yb^(3+)ions based on the efficient energy transfer from Nd^(3+)to Yb^(3+)ions.In addition,the emission intensity ratio of Yb^(3+)and Nd^(3+)shows good exponential-like response to temperature in the physiological range of 293-323 K.The feature properties of Nd_(0.95)Yb_(0.05)BPTC include near-infrared absorption and emission,favorable temperature sensitivity and accurate temperature uncertainty,as well as good chemical stability,making such system useful in biomedical applications.
基金
Project supported by the National Natural Science Foundation of China(51802284,51872263)
Zhejiang Provincial Natural Science Foundation of China(LY20E020007,LZ19E020001)。
作者简介
Corresponding author:Dian Zhao,E-mail addresses:dzhao@zjnu.edu.cn;Corresponding author:Chunxia Li,E-mail addresses:cxii@zjnu.edu.cn;Chao Gu,These authors contributed equally to this work;Yanyun Ding,These authors contributed equally to this work。
