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Citation: SHAN Yun, ZHANG Honglin, ZHANG Feng. Photoluminescence of Graphene Oxide and Hydrothermally Reduced Graphene Oxide[J]. Chinese Journal of Applied Chemistry, ;2015, 32(7): 837-842. doi: 10.11944/j.issn.1000-0518.2015.07.140381 shu

Photoluminescence of Graphene Oxide and Hydrothermally Reduced Graphene Oxide

SHAN Yun ^a,b,, ,
ZHANG Honglin ^c ,
ZHANG Feng ^a

1.
a School of Environmental Science, Nanjing Xiaozhuang University, Nanjing 211171, China;
2.
b National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;
3.
c School of Food Science, Nanjing Xiaozhuang University, Nanjing 211171, China

Corresponding author: SHAN Yun,
Received Date: 4 November 2014
Available Online: 19 January 2015
Fund Project: 国家自然科学基金(21203098,21375067) (21203098,21375067)中国博士后基金(2013M530247)资助项目 (2013M530247)

Graphene oxide (GO) and reduced graphene oxide (RGO) were prepared by modified Hummers method and hydrothermal reduction,respectively.They were characterized by transmission electron microscopy (TEM),UV-Vis absorption spectroscopy (UV-Vis),Fourier transform infrared (FTIR) spectroscopy,and photoluminescence emission and excitation spectroscopy (PL,PLE).PL spectra indicate that the broad nearinfrared (NIR) photoluminescence ranging from 600 to 800 nm can be acquired from graphene oxide under excitation of visible light.By comparing PL spectra from GO with that from RGO,and through the analysis of their UV-Vis absorption and FTIR spectra,the oxygen related groups,such as C=O and COOH,are found to be responsible for the NIR PL from GO.NIR fluorescence is favorable for bio-imaging because of its excellent penetrating ability and little damage to tissues.This indictates that GO has great potential applications in bio-imaging.
- graphene oxide,
- reduced graphene oxide,
- oxygen related groups,
- near-infrared fluorescence
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