Red Emissive Carbon Dots: Photoluminescence Mechanism, Modulation and Application Research

Huan WANG; Jing XU; Yu-qing HUANG; Hong-lei ZHOU; Xue-lin FANG; Hui-jun LI; Xian-ying WANG; Jun-he YANG

doi:10.37188/CJL.20200276

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Red Emissive Carbon Dots: Photoluminescence Mechanism, Modulation and Application Research

Invited Paper | 更新时间：2020-12-10

- Red Emissive Carbon Dots: Photoluminescence Mechanism, Modulation and Application Research
- Chinese Journal of Luminescence Vol. 41, Issue 12, Pages: 1579-1597(2020)
- 作者机构：
  
  1.上海理工大学材料科学与工程学院, 上海 200082
  2.国家知识产权局专利局专利审查协作江苏中心化学发明审查部高分子化学室, 江苏苏州 215000
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China;Chenguang Scholar Project of Shanghai Education Commission;Interdisciplinary Project of Materials & Medical Science at USST
- DOI：10.37188/CJL.20200276
  CLC：
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Huan WANG, Jing XU, Yu-qing HUANG, et al. Red Emissive Carbon Dots: Photoluminescence Mechanism, Modulation and Application Research. [J]. Chinese Journal of Luminescence 41(12):1579-1597(2020)
DOI：

Huan WANG, Jing XU, Yu-qing HUANG, et al. Red Emissive Carbon Dots: Photoluminescence Mechanism, Modulation and Application Research. [J]. Chinese Journal of Luminescence 41(12):1579-1597(2020) DOI： 10.37188/CJL.20200276.

摘要

红色荧光碳点(简称红光碳点，R-CDs)具有成像对比度好、空间分辨率高等优势，受到了研究者们的广泛关注。但目前报道的红光碳点往往存在荧光量子效率低、FWHM较宽且需要蓝绿光激发的缺陷，达不到实际应用需求。因此，进一步明确红光碳点发光机制、实现高荧光量子产率(PL QY)激发非依赖红光具有十分重要的意义。本文首先阐述了量子限域效应、表面状态、聚集效应等因素对碳点红光发射性质的作用机制；其次分析了红光碳点制备过程中前驱体、溶剂类型等的调控机制，并简要介绍了红光碳点在发光二极管及生物成像中的应用现状；最后，针对红光碳点的制备方法、性能调控及发展方向进行了展望。

Abstract

Due to the advantages of excellent imaging contrast and high spatial resolution, red emissive carbon dots(R-CDs) have attracted intensive attention. However, most of the reported R-CDs exhibited low photoluminescence quantum yield(PL QY), wide half peak-width(FWMH), and excitation-dependence property(excited mainly by blue or green light), which limits practical applications. Therefore, it is of great importance to furtherly elucidate the PL mechanism of R-CDs and achieve excitation-independent PL property as well as high PL QY. In this paper, the PL influencing factors of red emission including the quantum confinement effect, surface states and aggregation behaviors have been explained. Then, the regulatory mechanism of different reaction conditions such as the precursor and reaction reagent is investigated in details. Besides, we have briefly introduced the current applications of R-CDs in the fields of light emitting diodes and bio-imaging. Finally, attempts to realize the state-of-the-art performance of R-CDs is prospected.

关键词

红色荧光碳点荧光机理制备手段

Keywords

red emissioncarbon dotsphotoluminescence mechanismsynthetic method

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