Yellow-Fluorescence Carbon Dots Employed for pH Sensing and Detection of Tigecycline  

作　　者：Jingwen Zhao Junchen Wang Linggao Zeng Sen Zhou Xiaoming Yang 

机构地区：[1]College of Pharmaceutical Sciences,Southwest University,Chongqing,400715 China [2]Chongqing Academy of Metrology and Quality Inspection,Chongqing,401121 China [3]NMPA Key Laboratory for Quality Monitoring of Narcotic Drugs and Psychotropic Substances,Chongqing Institute for Food and Drug Control,Chongqing,401121 China

出　　处：《Chinese Journal of Chemistry》2023年第24期3677-3683,共7页中国化学（英文版）

基　　金：supported by Natural Science Foundation of Chongqing,China(cstc2021jcyj-msxmx0027);Talent and Innovation Project of Beibei District in Chongqing(2022-11);Performance Incentive and Guidance Special Project of Scientific Research Organization,Chongqing Science and Technology(cstc2021jxjl130024).

摘　　要：Long-wavelength fluorescence carbon dots (CDs) show great importance in multiple fields,especially for the biochemical sensing.Here,we proposed one type of CDs doped with nitrogen and sulfur through the hydrothermal method,which exhibited obvious yellow-fluorescence in aqueous solution.Importantly,the fluorescence intensity of CDs decreased with pH decreasing in the acidic range,thus a linear relationship between pH and fluorescence intensity was established,exhibiting the potential of pH sensing.Additionally,introducing tigecycline into CDs resulted in their decreased fluorescence,thus,we further established a strategy of detecting tigecycline with the concentration range of 200 μM to 7 nM.Meanwhile,we elucidated the static quenching as the major mechanism for CDs responding tigecycline,which was induced by the formed new complex between CDs and tigecycline.Furthermore,the practicality of the method was verified by examining the recovery of tigecycline in the actual lake-water samples.

关 键 词：Yellow-fluorescence TIGECYCLINE NANOSTRUCTURES Quantum dots Sensors 

分 类 号：O61[理学—无机化学]