Synthesis and characterization of single wall carbon nanotube-grafted poly(3-hexylthiophene) and their nanocomposites with gold nanoparticles

Autor(es)

de Freitas, Jilian N. ^[1] ; Maubane, Manoko S. ^{[2, 3]} ; Bepete, George ^{[2, 3]} ; van Otterlo, Willem A. L. ^{[3, 4]} ; Coville, Neil J. ^{[2, 3]} ; Nogueira, Ana F. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, Inst Chem, Lab Nanotechnol & Solar Energy, BR-13083970 Campinas, SP - Brazil

^[2] Univ Witwatersrand, DST NRF Ctr Excellence Strong Mat, ZA-2050 Johannesburg - South Africa

^[3] Univ Witwatersrand, Sch Chem, Inst Mol Sci, ZA-2050 Johannesburg - South Africa

^[4] Univ Stellenbosch, Dept Chem & Polymer Sci, ZA-7600 Stellenbosch, Western Cape - South Africa

• Tipo de documento: Artigo Científico
• Fonte: Synthetic Metals; v. 176, p. 55-64, JUL 15 2013.
• Citações Web of Science: 8

Resumo

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. (AU)

• Processo FAPESP: 09/15428-0 - Células fotovoltaicas híbridas com nanopartículas inorgânicas: investigação da função das nanopartículas e desenvolvimento de dispositivos mais eficientes
• Beneficiário: Jilian Nei de Freitas
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado