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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A strategy towards melanin-based functional material: rGO and sulfonated melanin composites

Full text
Author(s):
Bregadiolli, Bruna Andressa [1] ; Paulin, Joao Vitor [2] ; Albano, Luiz Gustavo Simao [3] ; Martins, Lucas Michelao [1] ; de Camargo, Davi Henrique Starnini [3] ; da Silva-Filho, Luiz Carlos [2, 4] ; Bufon, Carlos Cesar Bof [2, 3] ; Graeff, Carlos Frederico de Oliveira [1, 2]
Total Authors: 8
Affiliation:
[1] Sao Paulo State Univ UNESP, Sch Sci, Dept Phys, Bauru, SP - Brazil
[2] Sao Paulo State Univ UNESP, Sch Sci, Postgrad Program Sci & Technol Mat POSMAT, Bauru, SP - Brazil
[3] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Nanotechnol Natl Lab LNNano, Campinas - Brazil
[4] Brazilian Ctr Res Energy & Mat CNPEM, Sch Sci, Dept Chem, Bauru, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: JOURNAL OF MATERIALS CHEMISTRY C; v. 9, n. 47 NOV 2021.
Web of Science Citations: 0
Abstract

Melanin is a natural pigment and is one of the most promising materials in the emerging field of bioelectronics. The low conductivity of this class of materials is a limiting factor to their implementation in 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 applications in bioelectronics and/or organic electronics. (AU)

FAPESP's process: 17/07627-0 - Synthesis of conjugated reduced graphene oxide-polythiophene derivatives for application as HTM in perovskite solar cells
Grantee:Bruna Andressa Bregadiolli
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 18/09235-4 - Synthesis of reduced graphene oxide modified with quinoline derivatives for solar cell applications.
Grantee:Lucas Michelão Martins
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 14/25979-2 - Fabrication and characterization of devices and systems based on hybrid nanomembranes
Grantee:Carlos César Bof Bufon
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 17/25553-3 - Fabrication and characterization of self-rolled up nanomembranes of surface-supported metal-organic frameworks (SURMOFs) for applications in ultracompact electronic devices
Grantee:Luíz Gustavo Simão Albano
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 15/23000-1 - Vertical organic field-effect transistor using dyes of natural origin as active layer
Grantee:João Vitor Paulin
Support Opportunities: Scholarships in Brazil - Doctorate