1239-1247Nanocomposites of few-layer graphene with
nanoparticles of CdSe and CdS have been synthesized by two different methods,
one involving ultrasonication of a mixture of graphene and the chalcogenide
nanoparticles, and another involving assembly at the organic-aqueous interface.
The nanocomposites have been examined by electron microscopy, electronic
absorption and photoluminescence spectroscopies as well as Raman spectroscopy.
Electron microscopy reveals that the nanoparticles are dispersed on the
graphene surface. Raman spectra show the presence of definitive electronic
interaction between the nanoparticles and graphene depending on the capping
agent. Photoluminescence spectra are markedly influenced by the interaction of
the nanoparticles with the graphene surface, depending on the capping agent