Publicação: A strategy towards melanin-based functional material: rGO and sulfonated melanin composites
Carregando...
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Royal Society of Chemistry
Tipo
Artigo
Direito de acesso
Acesso aberto
Resumo
Melanin is a natural pigment and one of the most promising materials for the emerging field of bioelectronics. The low conductivity of this class of materials is a limiting factor to their implementation on electronics. In this work, we have improved the electrical properties of a melanin-like material by combining it with reduced graphene oxide (rGO). Three different concentrations of rGO (5, 10 and 15 wt%) were studied. The composites were structurally (SEM, Raman, XPS, FTIR, and solid-state NMR) and optically (UV-vis and PL) characterized. The electrical properties were investigated through transient current, current-voltage curves and electrochemical impedance under different humidity levels. An improved DC conductivity was found for the 15%rGO@sulfonated melanin composite. The results suggest that, together with sulfonated melanin, it could potentially be suitable for application in bioelectronics and/or organic electronics
Descrição
Palavras-chave
Bioeletronic material, Melanin, rGO, Composites, Electrical Properties
Idioma
Inglês
