Controlling ions and electrons in aqueous solution: an alternative point of view of the charge-transport behavior of eumelanin-inspired material

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Autor(es): dc.contributorMackenzie Institute for Research in Graphene and Nanotechnologies-
Autor(es): dc.contributorBrazilian Center for Research in Energy and Materials (CNPEM)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorMackenzie Evangelical Faculty of Paraná-
Autor(es): dc.creatorPaulin, João V.-
Autor(es): dc.creatorPereira, Mariane P.-
Autor(es): dc.creatorBregadiolli, Bruna A.-
Autor(es): dc.creatorCachaneski-Lopes, João P.-
Autor(es): dc.creatorGraeff, Carlos F. O.-
Autor(es): dc.creatorBatagin-Neto, Augusto-
Autor(es): dc.creatorBufon, Carlos C. B.-
Data de aceite: dc.date.accessioned2025-08-21T22:17:03Z-
Data de disponibilização: dc.date.available2025-08-21T22:17:03Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-04-17-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1039/d3tc00490b-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/249905-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/249905-
Descrição: dc.descriptionThe possibility of current injection and transport in eumelanin films, humans' most common natural pigment, has fascinated physicists and materials scientists since the early’ 60s. Nowadays, it is accepted that ionic transport is dominant in wet environments. The present study evaluates the charge transport in eumelanin-inspired films immersed in pure water and ionic aqueous solutions. Both current vs. voltage and voltage-dependent impedance/dielectric spectroscopy measurements are reported. The data confirm that the electrical response in pure water is dominated by ionic/protonic conduction, similar to standard eumelanin. Contrariwise, the protonic contribution is suppressed by faster electronic transport in an ionic aqueous solution. Considering these observations, an electrochemically doped mechanism is evoked to explain the charge transport of this class of material. The results yield new opportunities for tuning eumelanin-inspired materials' protonic and electronic conductivity and advancing towards in vivo implantable eumelanin-based (bio)devices.-
Descrição: dc.descriptionAdvanced Foods and Materials Canada-
Descrição: dc.descriptionAssociation Française contre les Myopathies-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionMinistry of Science and Technology-
Descrição: dc.descriptionMackenzie Presbyterian Institute Mackenzie Institute for Research in Graphene and Nanotechnologies, SP-
Descrição: dc.descriptionBrazilian Nanotechnology National Laboratory (LNNano) Brazilian Center for Research in Energy and Materials (CNPEM), SP-
Descrição: dc.descriptionSão Paulo State University (UNESP) School of Sciences Department of Physics, SP-
Descrição: dc.descriptionSão Paulo State University (UNESP) Postgraduate Program in Materials Science and Technology (POSMAT), SP-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Science and Engineering, SP-
Descrição: dc.descriptionMackenzie Evangelical Faculty of Paraná, PR-
Descrição: dc.descriptionSão Paulo State University (UNESP) School of Sciences Department of Physics, SP-
Descrição: dc.descriptionSão Paulo State University (UNESP) Postgraduate Program in Materials Science and Technology (POSMAT), SP-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Science and Engineering, SP-
Formato: dc.format6107-6118-
Idioma: dc.languageen-
Relação: dc.relationJournal of Materials Chemistry C-
???dc.source???: dc.sourceScopus-
Título: dc.titleControlling ions and electrons in aqueous solution: an alternative point of view of the charge-transport behavior of eumelanin-inspired material-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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