Optical and electrical properties of gold nanoparticles/poly(3-alkylthiophene) composites

0388457 - ÚMCH 2013 RIV US eng J - Článek v odborném periodiku
Halašová, Klára - Pfleger, Jiří - Sharf, Ahmed - Vobecký, Miloslav - Baldrian, Josef - Ladas, S. - Hromádková, Jiřina
Optical and electrical properties of gold nanoparticles/poly(3-alkylthiophene) composites.
Science of Advanced Materials. Roč. 5, č. 1 (2013), s. 28-36. ISSN 1947-2935. E-ISSN 1947-2943
Grant CEP: GA ČR GAP208/10/0941; GA MŠMT 7E10040
GRANT EU: European Commission(XE) 247745 - FlexNet
Výzkumný záměr: CEZ:AV0Z40500505
Institucionální podpora: RVO:61389013 ; RVO:68081715
Klíčová slova: nanocomposites * poly(3-alkylthiophene) * gold nanoparticles
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
Impakt faktor: 2.908, rok: 2013

Optical and electrical properties of nanocomposite materials based on poly(3-hexylthiophene), P3HT, or poly(3-octylthiophene), P3OT, blended with gold nanoparticles (2.6±1.2 nm) up to the Au content 5.7 vol% are reported. The (polyalkylthiophene)/Au nanocomposites are easily processable, film-forming temperature-stable materials. The optical spectra analysis and the X-ray diffraction show a decrease in the crystalinity of the poly(alkylthiophene)/Au thin films in comparison with the neat polymer. At lower temperatures, the electrical conductivity of the nanocomposites is thermally activated and depends exponentially on the distance of the nanoparticles as in the case of 3D nanoparticle arrays. At higher temperatures, the conductivity passes a maximum whose position varies from 70 °C and 80 °C in the neat P3OT and P3HT, respectively, to approx. 100 °C in the case of the nanocomposites. The shift of the conductivity maximum has been related to the changes in the polymer morphology introduced by the presence of the nanoparticles.
Trvalý link: http://hdl.handle.net/11104/0217573