固态荧光碳点的制备  

Preparation of Solid-State Fluorescent Carbon Dots

作　　者：李世嘉[1,2] 庞尔楠[1,2] 郝彩红 蔡婷婷 胡胜亮 Shijia Li;Ernan Pang;Caihong Hao;Tingting Cai;Shengliang Hu(School of Materials Science and Engineering,North University of China,Taiyuan 030051,China;ShanxiInstitute of Mechanical&Electrical Engineering,Changzhi 046011,China;School of Energy and Power Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学材料科学与工程学院,太原030051 [2]山西机电职业技术学院,长治046011 [3]中北大学能源动力工程学院,太原030051

出　　处：《化学进展》2020年第5期548-561,共14页Progress in Chemistry

基　　金：山西省三晋学者计划;山西省高等学校中青年拔尖创新人才支持计划;山西省重点研发计划-国际合作项目(No.201903D421082,201803D421091);山西省高校成果转化培育项目资助。

摘　　要：荧光碳点由于其具有无毒、制备成本低以及独特的光致发光性能而引起人们极大的研究兴趣,但是通常碳点的制备和使用均是在溶液中,而且随着碳点浓度的增加其荧光强度可能会降低甚至猝灭,通过简单干燥后得到的固态粉末则常常缺少荧光性质。因此,固态荧光碳点制备及其相关应用的研究相对较少。本文综述了固态荧光碳点的制备方法,包括后处理法(基质分散法、表面工程法)和前驱体直接合成法;对比了各种调控手段处理前后碳点荧光性能的变化情况,总结了各种固态碳点在制备过程中和使用过程中存在的主要问题。最后,针对固态发光碳点的制备方法、性能调控及发展方向进行了展望。开发具有聚集诱导发射增强的碳点是至关重要的,也为固态碳点的发展提供了新思路。Fluorescent carbon dots have attracted significant interest for their non-toxicity, low cost and unique photoluminescence properties. Generally, the preparation and usage of carbon dots(CDs) are in solution. With the increase of CDs concentration, their fluorescence intensity may be reduced or even quenched. Following, the solid-state fluorescent CDs powder obtained by simple drying often lack of fluorescence properties. Therefore, there are relatively few researches on the preparation and related applications of solid-state fluorescent CDs. The article describes recent preparation methods of solid-state fluorescent CDs, including post-processing methods(matrix dispersion method, surface engineering) and direct synthesis method. The changes of fluorescence properties of CDs before and after treatment are compared, and the main problems in preparation and application of solid CDs are summarized. Meanwhile, the preparation, performance modulation of solid-state fluorescent CDs are prospected. It is very crucial to exploit the CDs with the enhancement of aggregation induced emission, which provides a new strategy for the development of solid-state fluorescence CDs.

关 键 词：固态荧光碳点 制备 荧光量子产率 荧光猝灭 负载率 

分 类 号：O613.71[理学—无机化学]