Smart nanoprobe based on two-photon sensitized terbium-carbon dots for dual-mode fluorescence thermometer and antibacterial  

作　　者：Huicheng Yan Hongyuhang Ni Yiwei Yang Changfu Shan Xiaoxi Yang Xiangkai Li Jing Cao Wenyu Wu Weisheng Liu Yu Tang 

机构地区：[1]State Key Laboratory of Applied Organic Chemistry,Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province,College of Chemistry and Chemical Engineering,Lanzhou University,Lanzhou 730000,China [2]Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations,School of Life Sciences,Lanzhou University,Lanzhou 730000,China

出　　处：《Chinese Chemical Letters》2020年第7期1792-1796,共5页中国化学快报（英文版）

基　　金：the National Natural Science Foundation of China(Nos.21871121,21801104 and 21601074);Fundamental Research Funds for the Central Universities(No.Lzujbky-2018-ot01)。

摘　　要：Accurate temperature measurement plays an important role in a variety of industrial processes and scientific researches.In our work,the dual-mode temperature response nanoprobe CDs-Tb-TMPDPA containing a two-photon ligand(4-(2,4,6-trimethoxyphenyl)-pyridine-2,6-dicarboxylic acid,TMPDPA)sensitized Tb3+as a temperature-sensitive unit and carbon dots(CDs)as photothermal reagent and a fluorescence reference unit,have been designed and synthesized.In this system,both the fluorescence intensity ratio and the fluorescence lifetime have a good response to temperature.In additio n,due to the excellent photothermal conversion capability of CDs,photothermal antibacterial ability was also tested.Based on the temperature dependence of the fluorescence and the two-photon excitation characteristics of CDs-Tb-TMPDPA,the nanoprobe can also be used in the anti-counterfeiting.Our finding opens a new prospect for the use of two-photon sensitized dual-mode fluorescence thermometers.

关 键 词：Rare-earth Fluorescence lifetime Fluorescence intensity THERMOMETER ANTIBACTERIAL 

分 类 号：TH811[机械工程—仪器科学与技术]