Abstract
The present manuscript reports a mesoporous organosilica (mpSiO(2)) containing a p-phenylene vinylene (PPV) co-polymer partially grafted to the walls of the hybrid material (PPV⊂mpSiO(2)). This material was obtained by using a bis-silylated 2,5-bis(chloromethylphenylene) as the silicon precursor in combination with tetraethyl orthosilicate (TEOS) and cetyltrimethylammonium bromide (CTABr) as the surfactant. The final polymer was formed by adding appropriate amounts of 2,2'-{[2,5-bis(chloromethyl)-1,4-phenylene]bis(oxy)}diethanol as the co-monomer and KtBuO as the base. The resulting PPV⊂mpSiO(2) was characterized by XRD, SEM, TEM, FTIR spectroscopy, and magic angle spinning (29) Si NMR spectroscopy; all spectroscopic data were in agreement with the presence of a conducting polymer. The resulting PPV⊂mpSiO(2) material exhibits electrical conductivity, particularly after I(2) doping, an electrochemical response, and electroluminescence. Laser flash photolysis studies of PPV⊂mpSiO(2) indicate that this material can form PPV(·+) polarons that could be responsible for the electrochemical and electroluminescent response.
Published Version
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