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Hou X, Hu Y, Wang P, et al. Modified Facile Synthesis for Quantitatively Fluorescent Carbon Dots. Carbon N Y. 2017;122:389-394doi: 10.1016/j.carbon.2017.06.093.
Hou, X., Hu, Y., Wang, P., Yang, L., Al Awak, M. M., Tang, Y., Twara, F. K., Qian, H., & Sun, Y. P. (2017). Modified Facile Synthesis for Quantitatively Fluorescent Carbon Dots. Carbon, 122389-394. https://doi.org/10.1016/j.carbon.2017.06.093
Hou, Xiaofang, et al. "Modified Facile Synthesis for Quantitatively Fluorescent Carbon Dots." Carbon vol. 122 (2017): 389-394. doi: https://doi.org/10.1016/j.carbon.2017.06.093
Hou X, Hu Y, Wang P, Yang L, Al Awak MM, Tang Y, Twara FK, Qian H, Sun YP. Modified Facile Synthesis for Quantitatively Fluorescent Carbon Dots. Carbon N Y. 2017 Oct;122:389-394. doi: 10.1016/j.carbon.2017.06.093. Epub 2017 Jun 28. PMID: 29176908; PMCID: PMC5697797.
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Carbon N Y. 2017 Oct;122:389-394. doi: 10.1016/j.carbon.2017.06.093. Epub 2017 Jun 28.

Modified Facile Synthesis for Quantitatively Fluorescent Carbon Dots.

Carbon

Xiaofang Hou, Yin Hu, Ping Wang, Liju Yang, Mohamad M Al Awak, Yongan Tang, Fridah K Twara, Haijun Qian, Ya-Ping Sun

Affiliations

  1. Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, South Carolina 29634, USA.
  2. School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, China.
  3. Department of Pharmaceutical Sciences, Biomanufacturing Research Institute and Technology Enterprise, North Carolina Central University, Durham, NC 27707, USA.
  4. Department of Mathematics and Physics, North Carolina Central University, Durham, NC 27707, USA.

PMID: 29176908 PMCID: PMC5697797 DOI: 10.1016/j.carbon.2017.06.093

Abstract

A simple yet consequential modification was made to the popular carbonization processing of citric acid - polyethylenimine precursor mixtures to produce carbon dots (CDots). The modification was primarily on pushing the carbonization processing a little harder at a higher temperature, such as the hydrothermal processing condition of around 330 °C for 6 hours. The CDots thus produced are comparable in spectroscopic and other properties to those obtained in other more controlled syntheses including the deliberate chemical functionalization of preprocessed and selected small carbon nanoparticles, demonstrating the consistency in CDots and reaffirming their general definition as carbon nanoparticles with surface passivation by organic or other species. Equally significant is the finding that the modified processing of citric acid - polyethylenimine precursor mixtures could yield CDots of record-setting fluorescence performance, approaching the upper limit of being quantitatively fluorescent. Thus, the reported work serves as a demonstration on not only the need in selecting the right processing conditions and its associated opportunities in one-pot syntheses of CDots, but also the feasibility in pursuing the preparation of quantitatively fluorescent CDots, which represents an important milestone in the development and understanding of these fluorescent carbon nanomaterials.

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