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首页> 外文期刊>RSC Advances >Oxygen-driven, high-efficiency production of nitrogen-doped carbon dots from alkanolamines and their application for two-photon cellular imaging
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Oxygen-driven, high-efficiency production of nitrogen-doped carbon dots from alkanolamines and their application for two-photon cellular imaging

机译：氧气驱动，高效生产氮掺杂碳点的氮氧胺和它们对双光子蜂窝成像的应用

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摘要

A novel oxygen-driven method has been developed for low-cost, large-scale, and high-efficiency production of nitrogen-doped carbon dots (N-C-dots) by bubbling pure oxygen into monoethanolamine (MEA) under heating conditions. We find that the addition of pure oxygen significantly increases the reaction rate, and makes feasible one-pot gram scale fabrication (3.36 g) of highly photoluminescent N-C-dots in a couple of hours (2.0 h). With an instantaneous nucleation and gradual growth mechanism, precise control over the particle size of the N-C-dots from 2.0 to 16.1 nm is achieved by simply prolonging the heating time from 0.5 to 4.0 h. The as-prepared N-C-dots contain aromatic CN heterocycles in the core and have plentiful hydrophilic groups on the surface. Practically, the oxygen-driven method can be used to synthesize fluorescent N-C-dots from other alkanolamines such as diethanolamine (DEA) and triethanolamine (TEA), which shows general universality. Due to the strong up-conversion photoluminescence, good aqueous dispersibility, high photostability, excellent biocompatibility, and low cytotoxicity, the N-C-dots are demonstrated to be promising two-photon probes for high contrast bioimaging applications.
机译：通过将纯氧在加热条件下鼓泡成单乙醇胺（MEA），开发了一种新的氧气驱动方法，用于低成本，大规模和高效生产氮气掺杂的碳点（N-C点）。我们发现纯氧的添加显着提高了反应速率，并在几个小时（2.0h）中使得可行的单壶克拉姆制造（3.36g）高度光致发光的N-C点。通过瞬时成核和逐渐生长机制，通过简单地延长0.5至4.0小时，通过2.0至16.1nm的N-C点的粒度进行精确控制。制备的N-C点含有核心中的芳族CN杂环，表面上具有丰富的亲水基团。实际上，氧气驱动的方法可用于将荧光N-C点从其他链烷醇胺（例如二乙醇胺（DEA）和三乙醇胺（TEA）合成，其显示一般普遍性。由于强大的上转化光致发光，良好的水分散性，高光稳定性，优异的生物相容性和低细胞毒性，对N-C点进行说明是对高对比度生物分析应用的双光子探针。

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  • 来源
    《RSC Advances》 |2015年第20期|共8页
  • 作者

    Hu Yaoping; Yang Jing; Tian Jiangwei; Jia Li; Yu Jun-Sheng;

  • 作者单位

    Nanjing Univ State Key Lab Analyt Chem Life Sci Sch Chem &

    Chem Engn Nanjing 210093 Jiangsu Peoples R China;

    Nanjing Univ State Key Lab Analyt Chem Life Sci Sch Chem &

    Chem Engn Nanjing 210093 Jiangsu Peoples R China;

    Nanjing Univ State Key Lab Analyt Chem Life Sci Sch Chem &

    Chem Engn Nanjing 210093 Jiangsu Peoples R China;

    Nanjing Univ State Key Lab Analyt Chem Life Sci Sch Chem &

    Chem Engn Nanjing 210093 Jiangsu Peoples R China;

    Nanjing Univ State Key Lab Analyt Chem Life Sci Sch Chem &

    Chem Engn Nanjing 210093 Jiangsu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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