articleAdvanced MaterialsNov 27, 2017GREEN OA

Synthesis of Carbon Dots with Multiple Color Emission by Controlled Graphitization and Surface Functionalization

XSXiang Shui MiaoDQDan QuDYDongxue YangBNBing NieYZYikang Zhao

Beijing University of Technology · Changchun Institute of Optics, Fine Mechanics and Physics · +5 more institutions

PubMed
Indexed incrossrefpubmed

Abstract

Multiple-color-emissive carbon dots (CDots) have potential applications in various fields such as bioimaging, light-emitting devices, and photocatalysis. The majority of the current CDots to date exhibit excitation-wavelength-dependent emissions with their maximum emission limited at the blue-light region. Here, a synthesis of multiple-color-emission CDots by controlled graphitization and surface function is reported. The CDots are synthesized through controlled thermal pyrolysis of citric acid and urea. By regulating the thermal-pyrolysis temperature and ratio of reactants, the maximum emission of the resulting CDots gradually shifts from blue to red light, covering the entire light spectrum. Specifically,…

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Topics & keywords

Topics
Keywords
  • Materials science
  • Photoluminescence
  • Surface modification
  • Carbon fibers
  • Optoelectronics
  • Pyrolysis
  • Citric acid
  • Luminescence
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