Li Gui'an1,Song Jianping1,Li Xiu1,Meng Lingjie1,Li Farong1,Li Changbiao1, Bian Xiaobing2
(1.School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China; 2.School of Physics and Information Technology, Shaanxi Normal University, Xi¡äan 710062, China)
Abstract: A new synthetic method for nanocomposites, which are
doped by metal nanoparticles azo-dye compound (MNPADC) based on the structural model for
coating-codoping, was presented. Firstly, the azo-dye methyl orange (MO) were oriented and
adsorbed on the surface of spherical metal silver nanoparticles to form the dye-coating.
Secondly, the coated particles were doped into polymer matrix polyvinyl alcohol (PVA)
solution. Finally, the nanocomposites film was prepared by spin-coating. The structural
model for coating-codoping of nanocomposites was proposed, and its thermal properties were
analyzed. The UV-Vis spectrum of sample shows that there is an intense absorption in the
blue-violet band (400-450 nm).It is found from TGA that the MNPADC nanocomposites are more
suitable for the requirements optical storage compared with the only azo-dye doped one due
to its excellent thermal properties. The experimental results indicate that the synthetic
method presented here can offer an effective way for improving the thermal properties of
organic optical storage materials.
Keywords: metal nanoparticle; coating-codoping; nanocomposite; thermal property