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Core-shell and raspberry-like nanocomposites based on hybrid silica nanoparticles and on a functional polycarbazole polymer
|Anna Peled 1, Vadim Kotlyar , Jean-Paul Lellouche
1. Bar Ilan Universiry, Ramet-Gan 52900, Israel
Preparation of inorganic particle / organic polymer nanocomposites is challenging nanotechnological problem in terms of morphology control. However, preparation of nanocomposites from hard inorganic nanoparticles and functional conducting polymers can lead to development of remarkable materials with synergistic inorganic-organic properties. These novel nanocomposites may found practical application in stable sensory coatings, corrosion protection and electrode materials for organic photovoltaics.
Figure. Fabrication of core-shell and raspberry-like hybrid silica/polycarbazole nanocomposites
In this poster, we describe preparation of triethoxysilane-carbazole anchoring group and their incorporation into hybrid silica nanoparticles (20-25 & 150-250 nm), Figure. The hybrid silica nanoparticles with carbazole-anchoring groups were used for the preparation of hybrid silica/functional polycarbazole nanocomposite materials by chemical oxidative polymerization, Figure. Resulting nanocomposites were extensively characterized by TEM, SEM, HR-SEM, FT-IR, XPS and elemental analysis. They showed distinct core-shell and raspberry-like morphologies. The main conclusion of our study is that hybrid silica with anchoring carbazole groups on the surface is a critical factor (besides the many ones which were investigated) for morphology control at a nanometric scale.
Presentation: Poster at E-MRS Fall Meeting 2008, Workshop, by Anna Peled
See On-line Journal of E-MRS Fall Meeting 2008
Submitted: 2008-05-18 16:16 Revised: 2009-06-07 00:48