Florian Boon, Amandine Thomas, G. Clavel
Oct 1, 2012
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0
Influential Citations
22
Citations
Journal
Synthetic Metals
Abstract
Abstract Regioregular head-to-tail α-bromo-ω-carboxystyryl poly(3-hexylthiophene) (P3HT-COOH) has been prepared by a Wittig reaction of α-bromo-ω-formyl poly(3-hexylthiophene) (P3HT-CHO) with [(4-carboxyphenyl)methyl]triphenylphosphonium bromide. This carboxylic end-group functionalized polymer was used to functionalize TiO 2 nanoparticles in view of improving the miscibility between poly(3-hexylthiophene) and the nanoparticles, for future photovoltaic applications. The anchoring of the polymer on the surface of the TiO 2 nanoparticles was demonstrated by sedimentation tests in THF, and by thermogravimetric analysis (TGA), transmission electron microscopy (TEM), 1 H MAS solid-state NMR, UV–vis and X-ray photoelectron spectroscopies. Films were produced by solvent casting and the dispersion of the TiO 2 nanoparticles was evaluated by atomic force microscopy (AFM). Fluorescence quenching studies in CHCl 3 were performed on these hybrids materials.