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Excitation-dependent carbon dots powders based on dehydration condensation by microwave–hydrothermal method

  • Kun Zheng
  • Li Guan
  • Haotian Ma
  • Shuya Zhao
  • Jing Zhao
  • Zhaoyang Wang
  • Guoyi Dong
  • Zhiren Wei
  • Xu Li
Chemical routes to materials
  • 30 Downloads

Abstract

A green and economical microwave–hydrothermal method is employed to prepare carbon dots (CDs) that low-cost dl-malic acid serves as the carbon source and the formamide serves simultaneously as the pyrolysis solvent and carbon source. In the reaction process, neither assistant catalytic treatment nor further surface modification is necessary. We obtain better disperse CDs powders whose quantum yield reaches 25% as well as explain the dehydration condensation reaction mechanism based on the analysis by XPS and FTIR data. The luminescent properties are investigated in detail, and the results reveal that the excitation-dependent feature of as-prepared CDs has the potential for anti-counterfeiting mark and luminescence picture field.

Notes

Acknowledgements

This work was supported by the National Science Foundation of China (No. 61205180), the Young Top-notch Talent Support Program of Hebei Province and the Distinguished Young Scholars of Hebei University (2012JQ01). We also appreciate the National Science Foundation of Hebei University (Nos. 799207217040, 799207217035, 799207217027).

Supplementary material

10853_2018_2764_MOESM1_ESM.docx (268 kb)
Supplementary material 1 (DOCX 267 kb)

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Hebei Key Laboratory of Photo-Electricity Information and Materials, College of Physics Science and TechnologyHebei UniversityBaodingPeople’s Republic of China

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