Common Origin of Green Luminescence in Carbon Nanodots and Graphene Quantum Dots

Our findings further suggest that the competition among various emission centers and traps dominates the optical properties of these fluorescent carbon nanomaterials

Lei Wang; Shou-Jun Zhu; Hai-Yu Wang; Song-Nan Qu; Yong-Lai Zhang; Jun-Hu Zhang; Qi-Dai Chen; Huai-Liang Xu; Wei Han; Bai Yang; Hong-Bo Sun

2014

Scholarcy highlights

  • Carbon nanodots synthesized by electrochemical ablation and small molecule carbonization, as well as graphene quantum dots fabricated by solvothermally cutting graphene oxide, are three kinds of typical green fluorescence carbon nanomaterials
  • The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online
  • A common origin of green luminescence in these C-dots and GQDs is unraveled by ultrafast spectroscopy
  • According to the change of surface functional groups during surface chemical reduction experiments, which are accompanied by obvious emission-type transform, these common green luminescence emission centers that emerge in these C-dots and GQDs synthesized by bottom-up and top-down methods are unambiguously assigned to special edge states consisting of several carbon atoms on the edge of carbon backbone and functional groups with C═O
  • Our findings further suggest that the competition among various emission centers and traps dominates the optical properties of these fluorescent carbon nanomaterials
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