Photo-induced Ag modulating carbon dots:Greatly improved fluorescent properties and derived sensing application

作     者：Yuwei Wang Ye Li Guixiang Yang Xiaofeng Yang Chenglu Yan Huaqiao Peng Huiyong Wang Juan Du Baozhan Zheng Yong Guo Yuwei Wang;Ye Li;Guixiang Yang;Xiaofeng Yang;Chenglu Yan;Huaqiao Peng;Huiyong Wang;Juan Du;Baozhan Zheng;Yong Guo

作者机构：Department of ChemistrySichuan UniversityChengdu 610064China Institute of Quality Standard and Testing Technology for Agro-productsSichuan Academy of Agricultural SciencesChengdu 610066China Key Laboratory of Aviation Fuel&Chemical Airworthiness and Green DevelopmentThe Second Research Institute of Civil Aviation Administration of ChinaChengdu 610041China School of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiang 453007China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2024年第35卷第1期

页      面：338-342页

核心收录：

学科分类：081702[工学-化学工艺] 081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学] 

基　　金：the National Natural Science Foundation of China(Nos.U1833202 and 21876117) the Open Research Fund of the School of Chemistry and Chemical Engineering,Henan Normal University(No.2021YB05) 

主　　题：Carbon dots Photo-induced Ag modulating Fluorescent enhancement High quantum yield Derived sensing application Sulfide determination 

摘      要：Carbon dots(CDs)have been attracted much attention and widely studied due to their excellent fluorescence(FL)properties,better biocompatibility and outstanding photo/chemical ***,the disadvantage of lower quantum yield(QY)still limits its wide ***,we reported a novel and convenient strategy to prepare photo-induced Ag/CDs(p-Ag/CDs)by irradiating the mixed Ag+and hydrophobic CDs(h-CDs)acetone solution with ultraviolet(UV)*** obtained p-Ag/CDs exhibit a greatly enhanced FL emission together with a blue shift(460 nm)than h-CDs(520 nm).The QY of p-Ag/CDs is measured to be 51.1%,which is 10.4 times higher than that of h-CDs(4.9%),indicating that photo-induced Ag modulation can effectively improve the optical properties of *** mechanisms for the FL enhancement and blue shift of h-CDs are studied in *** results prove that the greatly enhanced FL emission is from the generated Ag nanoparticles(AgNPs)by UV light irradiation based on metal-enhanced fluorescence(MEF),and the increased oxygen-contained groups in this process lead to the blue shift in CDs ***,the p-Ag/CDs exhibit higher sensitivity and selectivity for sulfide ions(S2-)detection than that of h-CDs,which have a lower response to S2-.This work not only offers a novel strategy to improve the FL properties of materials but also endows them with new functions and broadens their application fields.