【作者】 霍泽鹏； 陈刚； 耿乙迦； 张雪； 潘凌云； 徐蔚青； 徐抒平；

【Author】 HUO Ze-peng;CHEN Gang;GENG Yi-jia;ZHANG Xue;PAN Ling-yun;XU Wei-qing;XU Shu-ping;State Key Laboratory of Supramolecular Structure and Materials,Institute of Theoretical Chemistry,College of Chemistry,Jilin University;College of Physics,Jilin University;

【机构】 吉林大学超分子结构与材料国家重点实验室理论化学研究所化学学院； 吉林大学物理学院；

【摘要】 用一锅法合成了具有高量子产率,绿光发射,低毒性的碳化聚合物点(CPDs)。利用紫外可见光谱、单光子荧光光谱、双光子荧光光谱和傅里叶变换红外光谱等多种光谱手段对CPDs的表面状态进行了表征。此外,还利用能提供超快动力学过程信息的瞬态吸收光谱,证明了CPDs表面状态随pH值的变化。本研究有利于对碳点的表面态进行更加深入的理解,同时,为进一步研究碳点的发光特性及其传感应用提供了参考。更多还原

【Abstract】 In this study,carbonized polymer dots(CPDs) with high quantum yield,green emission and low toxicity was synthesized by one pot hydrothermal method.The surface state of CPDs can be effectively controlled by the change of pH,which were characterized by various spectroscopies,involving UV-vis spectrum,one-photon photoluminescence spectrum,two-photon photoluminescence spectrum and Fourier transform infrared spectrum(FT-IR).Transient absorption spectroscopy that can give information of ultrafast dynamic process were used for proving the changes of the surface states of CPDs with pH values.This study is a deeper understanding of the surface states of carbon dots,which will be a reference for tuning the luminescent features of the CPDs and their sensing applications.更多还原