磷光碳点的结构设计、合成及其应用  

Phosphorescent carbon dots:Microstructure design,synthesis and applications

作　　者：康海鑫 郑静霞 刘旭光[1,2] 杨永珍[2] KANG Hai-xin;ZHENG Jing-xia;LIU Xu-guang;YANG Yong-zhen(College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学材料科学与工程学院,山西太原030024 [2]太原理工大学新材料界面科学与工程教育部重点实验室,山西太原030024

出　　处：《新型炭材料》2021年第4期649-664,共16页New Carbon Materials

基　　金：国家自然科学基金(51972221);山西省回国留学人员科研资助项目(HGKY2019027,2020-051).

摘　　要：磷光碳点(CDs)因其具有长寿命、长波长发射、低背景干扰等优点,在能源、信息和生物医学等领域具有较大的潜力。但是,磷光CDs的制备及其发光机理依然面临一些挑战,如:其三重态极易受到外界环境的影响,从而导致磷光猝灭。因此,针对存在的问题,本文首先分析和总结了磷光CDs的起源以及杂元素掺杂、刚性结构和共轭结构等对磷光CDs结构和性能的影响;其次,从一步和两步法两方面综述了其合成方法;再次,归纳了磷光CDs在信息防伪、发光二极管、离子检测和生物成像等方面的应用研究;最后,提出目前仍然存在的问题,并展望了其研究和应用发展方向。Phosphorescent carbon dots(CDs)have great potential in energy,information,biomedicine,and other fields because of their long lifetime,long wavelength emission,and low background interference.However,there are still some challenges in their pre-paration and understanding their luminescence mechanism.For example,their triplet states are easily affected by the external envir-onment,which leads to phosphorescence quenching.The phosphorescence mechanism and the effects of element doping,rigidity of structure,and conjugated structure on their properties are reviewed to address these issues.The synthesis methods include one step and two step methods.The uses of phosphorescent CDs are summarized and include information security,light emitting diodes,ion detection,and biological imaging.The existing problems are discussed and development directions are proposed.

关 键 词：碳点 磷光 结构 合成 应用 

分 类 号：TQ127.11[化学工程—无机化工]