Effects of local matrix environment on the spectroscopic properties of ensemble to single-particle level carbon dots  

作　　者：Zhihong Wei Boyang Wang Mingcai Xie Daocheng Hong Xin Yang Sushu Wan Weiqing Yang Siyu Lu Yuxi Tian 

机构地区：[1]Key Laboratory of Mesoscopic Chemistry of MOE,School of Chemistry and Chemical Engineering,Jiangsu Key Laboratory of Vehicle Emissions Control,Nanjing University,Nanjing 210023,China [2]Green Catalysis Center,and College of Chemistry,Zhengzhou University,Zhengzhou 450001,China [3]Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province,Yancheng Institute of Technology,Yancheng 224051,China

出　　处：《Chinese Chemical Letters》2022年第2期751-756,共6页中国化学快报（英文版）

基　　金：financial support from National Natural Science Foundation of China (No.22073046);Fundamental Research Funds for the Central Universities。

摘　　要：Carbon dots(CDs), because of their unique properties, are being rapidly developed as important luminescent materials for imaging, sensing, and use in photonic devices. However, most of the reported fundamental properties of the CDs are results of investigations conducted in the solution state, which may be completely different from those conducted in the solid state. In this work, we study the luminescence properties, photostability, and the dynamics of CDs in different matrix environments, from ensemble to the single-particle level. We observed that the properties associated with the emission centers and photostability of CDs were extremely sensitive to the local chemical environment. A better understanding of the dependence of the spectroscopic properties of CDs on the complex local chemical environment is an important step toward finding new ways of controlling the optical properties of CDs and optimizing their use in various applications.

关 键 词：Carbon dots Matrix effects SINGLE-PARTICLE PHOTOSTABILITY BLINKING 

分 类 号：TQ127.11[化学工程—无机化工] TB383.1[一般工业技术—材料科学与工程]