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北京工业大学化学与生物系 绿色催化与分离北京市重点实验室 环境安全与生物效应中心,北京 100124
Published:2021-12,
Received:16 September 2021,
Revised:25 September 2021,
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JI-JIAN XU, DAN QU, LI AN, et al. Preparation, Optical Control and Application of Red/Near Infrared Emitting Carbon Dots. [J]. Chinese journal of luminescence, 2021, 42(12): 1837-1851.
JI-JIAN XU, DAN QU, LI AN, et al. Preparation, Optical Control and Application of Red/Near Infrared Emitting Carbon Dots. [J]. Chinese journal of luminescence, 2021, 42(12): 1837-1851. DOI: 10.37188/CJL.20210302.
红光/近红外发射碳点(简称R/NIR-CDs)具有生物相容性好、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、半峰宽较宽且具有激发波长依赖的缺陷,限制了其在生物医学领域的应用。因此,合成制备高荧光量子产率(PLQY)、半峰宽窄且激发非依赖的红光/近红外发射碳点具有十分重要的意义。本文首先阐述了近年来几种具有代表性的典型前驱体及其合成碳点,总结了尺寸效应、杂原子掺杂、表面态等高效的碳点光学调控理论,并简要介绍了红光/近红外发射碳点在生物成像、疾病治疗及白光发光二极管中的应用现状。最后,针对红光/近红外发射碳点的发光机理、制备方法中面临的问题与挑战进行了展望。
Red/near-infrared emitting carbon dots(marked as R/NIR-CDs) have the advantages of good biocompatibility and high spatial resolution
which had attracted the attention of researchers. However
the currently reported red carbon dots often have the defects of low fluorescence quantum efficiency
wide full width at half-maximum and excitation wavelength dependence
which limit their application in the biomedical field. Therefore
it is of great significance to synthesize carbon dots with high photoluminescence quantum yield(PLQY)
narrow half-width and excitation-independent red/near-infrared emission. This article first describes several representative typical precursors and their synthesized carbon dots in recent years
and then summarizes several efficient regulation methods for the optical properties of CDs such as size effect
heteroatom doping
surface state
etc
and briefly introduces the application of red/near infrared emitting carbon dots in bioimaging
disease treatment and white light emitting diodes. Finally
the problems and challenges faced in the luminescence mechanism and the preparation method of red/near-infrared emitting carbon dots are prospected.
碳点红光/近红外发射光学调控生物成像LED
carbon dotsred/NIR emissionoptical controlbioimagingLED
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