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Type: Artigo de periódico
Title: Synthesis and characterization of single wall carbon nanotube-grafted poly(3-hexylthiophene) and their nanocomposites with gold nanoparticles
Author: de Freitas, JN
Maubane, MS
Bepete, G
van Otterlo, WAL
Coville, NJ
Nogueira, AF
Abstract: Single-wall carbon nanotubes (SWCNTs) were functionalized via the Prato reaction, by using a combination of N-methylglycine and 2-thiophenecarboxaldehyde (2T) or 3-thiophenecarboxaldehyde (3T). Pristine SWCNTs or functionalized SWCNTs were then reacted with 3-hexylthiophene (3HT) in the presence of FeCl3 to produce a composite (P3HT/SWCNT) or copolymers (P3HT-2T-SWCNT and P3HT-3T-SWCNT), containing 3-hexylthiophene units as the main chain and carbon nanotubes as side groups. After that, gold nanoparticles (AuNPs) were synthesized using a two-phase, one-pot reaction involving the reduction of HAuCl4 by NaBH4, in the presence of P3HT, P3HT/SWCNT, P3HT-2T-SWCNT or P3HT-3T-SWCNT. This approach generated nanocomposites where AuNPs were stabilized directly with P3HT or P3HT-containing SWCNTs. The characteristics of the ternary nanocomposites were investigated using UV-vis and fluorescence spectroscopy, thermogravimetric analysis, X-ray diffraction and high-resolution transmission electron microscopy. (c) 2013 Elsevier B.V. All rights reserved.
Subject: Poly(3-hexylthiophene)
Gold nanoparticles
Carbon nanotubes
Country: Suíça
Editor: Elsevier Science Sa
Citation: Synthetic Metals. Elsevier Science Sa, v. 176, n. 55, n. 64, 2013.
Rights: fechado
Identifier DOI: 10.1016/j.synthmet.2013.05.026
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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