Chlorine Modulation Fluorescent Performance of Seaweed-Derived Graphene Quantum Dots for Long-Wavelength Excitation Cell-Imaging Application

We developed a novel ecofriendly solvothermal method that uses ethanol as a solvent and doping with chlorine atoms to prepare highly fluorescent graphene quantum dots from seaweed

Weitao Li; Ningjia Jiang; Bin Wu; Yuan Liu; Luoman Zhang; Jianxin He

2021

Scholarcy highlights

  • Today, humankind is faced with some diseases that are extremely difficult to cure, such as cancer
  • Cl-graphene quantum dots were larger than GQDs, which indicates that Cl-doping is helpful for the growth of GQDs
  • Using high-resolution transmission electron microscopy, we obtained the single-crystal structure of GQDs
  • There are three peaks in the X-ray photoelectron spectroscopy spectrum of GQDs, which correspond to C1s
  • Summary, we turned seaweed into valuable fluorescent nanomaterials
  • The comparison of N1s shows that the nitrogen content of the Cl-GQDs increased to 30%, the Cl content was 2.38%, which did not change much with the increase is reduced, indicating that the Cl-doping replaces the nitrogen atoms
  • In wehave have turned seaweed into valuable fluorescent nanomaterials
  • Through Cl-doping, the graphitization degree of Cl-graphene quantum dots is improved and the fluoresis enhanced

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