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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|
van Otterlo, WAL
|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.|
|Editor:||Elsevier Science Sa|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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