Abstract
This work aimed to develop an innovative composite material consisting of graphene oxide films coated with silver nanowires (AgNWs)/poly(3-hexylthiophene) (P3HT). Translucent chemically reduced graphene oxide (CGO) films, presenting electrical conductivity of ca. 5.2 × 101 S/m, as well as graphene oxide (GO) films, have been coated with high aspect ratio AgNWs (78 ± 20 nm diameter and ca. 10-µm length) and undoped P3HT, by casting and dip-coating. The presence of AgNWs favored the formation of H-aggregates of P3HT, both in toluene solution and in the films, lowering the degree of ordering of P3HT chains. The nanowires also tend to agglomerate in the presence of the conjugated polymer during the preparation of casted and dip-coating films from toluene solutions. Thus, AgNWs/P3HT films presented capacitive impedances similar to that of dielectric materials, while AgNWs/P3HT/CGO films showed behavior of resistive materials with conductivities between 1.5 and 4.2 × 101 S/m. Impedance and UV–Vis results also suggest that casted films present a better organization of P3HT chains than those deposited by dip-coating.
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Complementary data is available in the Supporting Information attached to this paper or from the corresponding author. Part of the data is also available to download from https://sucupira.capes.gov.br/sucupira/public/consultas/coleta/trabalhoConclusao/viewTrabalhoConclusao.jsf?popup=true&id_trabalho=2430480
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Acknowledgements
The authors are grateful to FAPESC (2019TR582), for the financial support, and to CAPES-DS, CNPq (200741/2018-7), and UDESC-PROMOP, for the scholarships to J. L. S. Gascho, S F. da Costa and K.F. Morcelles, respectively.
Funding
The authors are grateful to:
Fundação de Amparo à Pesquisa e Inovação do Estado de Santa Catarina (Brazil)—FAPESC, Grant 2019TR582, for the financial support.
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior–Demanda Social (Brazil)—CAPES-DS, for the scholarship to J. L. S. Gascho.
Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brazil)—CNPq, Grant 200,741/2018–7, for the scholarship to S F. da Costa.
Fundação Universidade do Estado de Santa Catarina–Programa de Bolsas de Monitoria de Pós-Graduação (Brazil)—UDESC-PROMOP, for the scholarship to K.F. Morcelles.
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da Silva Gascho, J.L., da Costa, S.F., Morcelles, K.F. et al. The effect of silver nanowires on the formation of aggregates of poly(3-hexylthiophene) in films deposited on reduced graphene oxide. J Nanopart Res 23, 153 (2021). https://doi.org/10.1007/s11051-021-05287-1
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DOI: https://doi.org/10.1007/s11051-021-05287-1