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首页> 外文期刊>Journal of Materials Research >Preparation of highly luminescent and color tunable carbon nanodots under visible light excitation for in vitro and in vivo bio-imaging
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Preparation of highly luminescent and color tunable carbon nanodots under visible light excitation for in vitro and in vivo bio-imaging

机译：在可见光激发下制备高发光和颜色可调的碳纳米点，用于体外和体内生物成像

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摘要

Carbon nanodots (CDs) have generated enormous excitement because of their superiority in water solubility, chemical inertness, low toxicity, ease of functionalization and resistance to photo-bleaching. Here we report a facile thermal pyrolysis route to prepare CDs with high quantum yield (QY) using citric acid as the carbon source and ethylene diamine derivatives (EDAs) including triethylenetetramine (TETA), tetraethylenepentamine (TEPA) and polyene polyamine (PEPA) as the passivation agents. We find that the CDs prepared from EDAs, such as TETA, TEPA and PEPA, show relatively high photoluminescence (PL) QY (11.4, 10.6, and 9.8%, respectively) at λ_(ex) of 465 nm. The cytotoxicity of the CDs has been investigated through in vitro and in vivo bio-imaging studies. The results indicate that these CDs possess low toxicity and good biocompatibility. The unique properties such as the high PL QY at large excitation wave length and the low toxicity of the resulting CDs make them promising fluorescent nanoprobes for applications in optical bio-imaging and biosensing.
机译：碳纳米点（CD）由于在水溶性，化学惰性，低毒性，易于官能化和抗光漂白性方面的优越性而引起了极大的兴奋。在这里，我们报告了一种简便的热解路线，以柠檬酸为碳源和乙二胺衍生物（EDA），包括三亚乙基四胺（TETA），四亚乙基五胺（TEPA）和多烯多胺（PEPA），以高量子产率（QY）制备CD。钝化剂。我们发现，由EDA（例如TETA，TEPA和PEPA）制备的CD在465 nm的λ_（ex）下显示出相对较高的光致发光（PL）QY（分别为11.4、10.6和9.8％）。已通过体外和体内生物成像研究对CD的细胞毒性进行了研究。结果表明，这些CD具有低毒性和良好的生物相容性。诸如在大激发波长处的高PL QY和所得CD的低毒性等独特特性使它们成为有前途的荧光纳米探针，可用于光学生物成像和生物传感。

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  • 来源
    《Journal of Materials Research》 |2015年第22期|3386-3393|共8页
  • 作者

    Min Zheng; Shi Liu; Jing Li; Zhigang Xie; Dan Qu; Xiang Miao; Xiabin Jing; Zaicheng Sun; Hongyou Fan;

  • 作者单位

    Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing 100124, People's Republic of China, State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, People's Republic of China;

    State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, People's Republic of China;

    State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, People's Republic of China;

    State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, People's Republic of China;

    State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, People's Republic of China;

    State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, People's Republic of China, University of Chinese Academy of Sciences, Beijing, People's Republic of China;

    State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, People's Republic of China;

    Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing 100124, People's Republic of China, State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, People's Republic of China;

    Center for Micro-Engineered Materials, Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM 87106, USA, Advanced Materials Laboratory, Sandia National Laboratories, NM 87106, Albuquerque, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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