Synthesis and characterization of carboxystyryl end-functionalized poly(3-hexylthiophene)/TiO₂ hybrids in view of photovoltaic applications

详细信息    查看全文

• 作者：Florian Boon ; Am ; ine Thomas ; Guylhaine Clavel ; David Moerman ; Julien De Winter ; Danielle Laurencin ; Olivier Coulembier ; Philippe Dubois ; Pascal Gerbaux ; Roberto Lazzaroni ; S¨¦bastien Richeter ; Ahmad Mehdi ; S¨¦bastien Cl¨¦ment
• 关键词：Poly(3-hexyl)thiophene ; TiO2 ; Nanoparticles ; AFM ; Solid-state NMR ; Luminescence
• 刊名：Synthetic Metals
• 出版年：2012
• 出版时间：October, 2012
• 年：2012
• 卷：162
• 期：17-18
• 页码：1615-1622
• 全文大小：1058 K

文摘

Regioregular head-to-tail ¦Á-bromo-¦Ø-carboxystyryl poly(3-hexylthiophene) (P3HT-COOH) has been prepared by a Wittig reaction of ¦Á-bromo-¦Ø-formyl poly(3-hexylthiophene) (P3HT-CHO) with [(4-carboxyphenyl)methyl]triphenylphosphonium bromide. This carboxylic end-group functionalized polymer was used to functionalize TiO₂ 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 TiO₂ nanoparticles was demonstrated by sedimentation tests in THF, and by thermogravimetric analysis (TGA), transmission electron microscopy (TEM), ¹H MAS solid-state NMR, UV-vis and X-ray photoelectron spectroscopies. Films were produced by solvent casting and the dispersion of the TiO₂ nanoparticles was evaluated by atomic force microscopy (AFM). Fluorescence quenching studies in CHCl₃ were performed on these hybrids materials.