Polymer types regulation strategy toward the synthesis of carbonized polymer dots with excitation-wavelength dependent or independent fluorescence  

作　　者：Jianliang Bai Xinyu Wang Yaqing Zhu Guojun Yuan Shuang Wu Fu Qin Xu Yu Lili Ren 

机构地区：[1]School of Chemistry&Chemical Engineering,Southeast University,Nanjing 211189,China [2]School of Environment and Chemical Engineering,Anhui Vocational and Technical College,Hefei 230011,China

出　　处：《Chinese Chemical Letters》2023年第2期388-392,共5页中国化学快报（英文版）

基　　金：the Priority Academic Program Development of Jiangsu Higher Education Institutions (No. 1107047002);the Key Research and Development Plan (Modern Agriculture) of Jiangsu Province (No. BE2018385);Innovation Platform Project supported by Jiangsu Province (No. 6907041203)。

摘　　要：Three kinds of carbonized polymer dots(CPDs) synthesized via a one-pot process from ophenylenediamine(OPD), m-phenylenediamine(MPD) and p-phenylenediamine(PPD) exhibit excitationwavelength independent yellow, green and red emissions, respectively. In sharp contrast, two kinds of CPDs prepared via a hydrothermal process from citric acid(CA) and diethylenetriamine(DETA) exhibit obvious excitation-wavelength dependent emissions. Through the characterization and comparison of the two types of CPDs, it is concretely revealed that the polymer structure types during the formation of CPDs can effectively control the fluorescence excitation-wavelength independence/dependence. The homogeneous polymer structures contained in CPDs contribute to excitation-wavelength independence, whereas random copolymer structures contribute to excitation-wavelength dependence. These studies are of great significance for further understanding the polymer structures and designing unique optical properties of CPDs.

关 键 词：Carbonized polymer dots Excitation-wavelength dependence Excitation-wavelength independence Homogeneous polymer structures Random polymer structures 

分 类 号：TQ317[化学工程—高聚物工业]