Highly green fluorescent Nb2C MXene quantum dots for Cu2+ion sensing and cell imaging  

作　　者：Xiang Yan Junfei Ma Kaixuan Yu Jiapeng Li Lei Yang Jjiaqi Liu Juncheng Wang Lulu Cai 

机构地区：[1]School of Materials Science and Engineering.Baise University.Baise 533000,China [2]State Key Laboratory of Heavy Oilt Processing,China University of Petroleum-Beijing,Beijing 102249,China [3]Personalized Drug Therapy Key Laboratory of Sichuan Province,Department of Pharmacy,Sichuan Provincial Peoples Hospital School Medicine,University of Electronic Science and Technology of China.Chengdu 610072,China [4]Stomatology Department of the General Haspital of Chinese PLA,Beijing 100853,China

出　　处：《Chinese Chemical Letters》2020年第12期3173-3177,共5页中国化学快报（英文版）

基　　金：the National Nature Science Foundation of China(No.31340014);the Youth Development Project of Medical Technologyin Army(No.13QNP166);the Key Research and Development Program of Science and Technology Department of Sichuan Province(No.2019YFS0514);Funds for the Construction of Master’s Degree Granting Units in Guangxi Zhuang Autonomous Region in 2020 for the support。

摘　　要：Niobium carbide MXene quantum dots(Nb2 C MQDs)derived from 2 D Nb2 CTx(MXene)are the rising-star material recently.Herein,a sulfur and nitrogen co-doped Nb2 C MQDs(S,N-MQDs)were synthesized through a hydrothermal method.The obtained Nb2 C MQDs have excellent green fluorescence with a quantum yield(QY)of 17.25%.In addition,they exhibited excitatio n-dependent photoluminescence,antiphotobleaching and dispersion stability.They emit light at 520 nm when excited at 390 nm.The Nb2 C MQDs could be successfully applied to copper ion detection with detection limit of 2μmol/L and Caco-2 cells imaging.

关 键 词：2D-QDs Nb2C-Mxene Cell imaging Ion sensing Sulfur-nitrogen co-doping 

分 类 号：O657.3[理学—分析化学] Q503[理学—化学]