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Pyrolytic synthesis of carbon quantum dots, and their photoluminescence properties

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Abstract

Carbon quantum dots (CQDs) with strong photoluminescence (PL) emission and intriguing upconversion emission property have been prepared by facile and effective pyrolysis of the salt calcium disodium ethylenediamine tetraacetate (EDTA–2Na–Ca·4H2O) at 400 °C. The relative fluorescence quantum yield of the CQDs in aqueous solution reached 66.03 %, which is the highest value yet obtained. Moreover, the CQDs also had a strong upconversion PL property on excitation at 600–750 nm. It is proposed that an anti-Stokes shift is responsible for this upconversion PL emission.

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Acknowledgments

This work was supported by the Natural Science Foundation of China (no. 61176004, 61204078) and the Science and Technology Breakthrough Program of Henan Province (no. 122102210561).

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, Henan, People’s Republic of China

    Xiaomin Li, Jiuli Chang, Fang Xu, Xiaorui Wang, Yuehe Lang, Zhiyong Gao, Dapeng Wu & Kai Jiang

  2. Collaborative Innovation Center of Motive Power & Key Materials, Xinxiang, 453007, Henan, People’s Republic of China

    Fang Xu & Kai Jiang

Authors
  1. Xiaomin Li
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  2. Jiuli Chang
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  3. Fang Xu
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  4. Xiaorui Wang
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  6. Zhiyong Gao
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Correspondence to Zhiyong Gao or Kai Jiang.

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Li, X., Chang, J., Xu, F. et al. Pyrolytic synthesis of carbon quantum dots, and their photoluminescence properties. Res Chem Intermed 41, 813–819 (2015). https://doi.org/10.1007/s11164-013-1233-x

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  • DOI: https://doi.org/10.1007/s11164-013-1233-x

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