Synthesis of strongly fluorescent molybdenum disulfide nanosheets for cell-targeted labeling.
MoS2 nanosheets with polydispersity of the lateral dimensions from natural mineral molybdenite have been prepared in the emulsions microenvironment built by the water/surfactant/CO2 system. The size, thickness, and atomic structure are characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), and laser-scattering particle size analysis. Meanwhile, by the analysis of photoluminescence spectroscopy and microscope, the MoS2 nanosheets with smaller lateral dimensions exhibit extraordinary photoluminescence properties different from those with relatively larger lateral dimensions. The discovery of the excitation dependent photoluminescence for MoS2 nanosheets makes them potentially of interests for the applications in optoelectronics and biology. Moreover, we demonstrate that the fabricated MoS2 nanosheets can be a nontoxic fluorescent label for cell-targeted labeling application.
College of Materials Science and Engineering, Zhengzhou University , Zhengzhou 450052, China.
Nan
N
Wang
Fang
F
Wei
Yuhang
Y
Qi
Hongxiang
H
Li
Xin
X
Lu
Guoqiang
G
Zhao
Qun
Q
Xu
D002245:Carbon Dioxide / Q000737:chemistry; D058948:Cell Tracking / Q000379:methods*; D004220:Disulfides / Q000138:chemical synthesis* / Q000737:chemistry; D018625:Microscopy, Atomic Force; D046529:Microscopy, Electron, Transmission; D008982:Molybdenum / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry*; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry; D014867:Water / Q000737:chemistry
D004220:Disulfides; D013501:Surface-Active Agents; D014867:Water; D002245:Carbon Dioxide; D008982:Molybdenum; C082964:molybdenum disulfide
cell labeling; lateral dimensions control; molybdenum disulfide; nanosheets; photoluminescence