Easy-to-perform organic-solvent-free synthesis of carbon dots with strong green photoluminescence

作     者：Jiazhuang Guo Yifeng Chen Pan Zhang Ge Li Xiaoning Yang Cai-Feng Wang Su Chen Jiazhuang Guo;Yifeng Chen;Pan Zhang;Ge Li;Xiaoning Yang;Cai-Feng Wang;Su Chen

作者机构：State Key Laboratory of Materials-Oriented Chemical EngineeringCollege of Chemical EngineeringNanjing Tech UniversityNanjing 210009China 

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

年 卷 期：2024年第35卷第3期

页      面：373-378页

核心收录：

学科分类：081702[工学-化学工艺] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by National Natural Science Foundation of China(Nos.21736006 and 21978132) National Key Research and Development Program of China(No.2022YFC2104600) Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD) 

主　　题：Carbon dots Efficient synthesis Green fluorescence Quantum yield White LEDs Microfluidic detection platform 

摘      要：Carbon dots(CDs)have been extensively studied owing to their fascinating optical properties and wide potential ***,we report an easy-to-perform and organic-solvent-free synthesis strategy for green-emissive CDs(G-CDs)possessing high photoluminescence(PL)quantum yield(QY).The G-CDs are synthesized by heating the homogeneous precursors of citric acid and cyanamide in an open vessel,circumventing the use of organic solvents,complex operations,high-pressure reactors,and expensive instruments in the synthesis *** effect of various reaction variables on the formation and the optical properties of G-CDs are systematically *** resultant G-CDs show bright PL emission at 521 nm with PL QY up to 73%.Then a white light-emitting diode(LED)with Commission Internationable de L Eclairage(CIE)coordinates of(0.33,0.34)and color rendering index(CRI)of 92 is constructed based on G-CDs/thermoplastic polyurethane(TPU)***,a visual microfluidic detection platform is designed by using G-CDs as fluorescent probes for rapid quantitative detection of Fe^(3+),Cu^(2+),and Mn^(2+)metal ions,which can realize synchronized testing of multiple *** study might promote the development and preparation methods of high-performance CDs with various optical applications.