Exploring the Charge Transport of a Natural Eumelanin for Sustainable Technologies

Author(s)

Paulin, Joao V. ; Bayram, Sinan ; Graeff, Carlos F. O. ; Bufon, Carlos C. B.

• Document type: Journal article
• Source: ACS APPLIED BIO MATERIALS; v. 6, n. 9, p. 5-pg., 2023-09-07.

Abstract

Eumelanin, the main quinone-based biomaterial of the melanin family of compounds, is emerging as a model for medical and sustainable electronic interfaces due to its biocompatibility, biodegradability, and transducing abilities. The study utilizes current-voltage measurements and impedance/dielectric spectroscopy under a controlled hydration atmosphere to investigate the charge transport of eumelanin produced from the S. parvus BSB49 strain. We show no differences in the electrical response in highly hydrated conditions compared to the standard synthetic eumelanin. Hence, our findings provide the groundwork to assess the potential use of this natural eumelanin in sustainable organic (bio)electronic applications. (AU)

• FAPESP's process: 17/02317-2 - Interfaces in materials: electronic, magnetic, structural and transport properties
• Grantee: Adalberto Fazzio
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 20/15869-6 - Rolled-up drain vertical organic transistors towards bioelectronic and neuromorphic applications
• Grantee: João Vitor Paulin
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 14/50906-9 - INCT 2014: in Functional Complex Materials
• Grantee: Fernando Galembeck
• Support Opportunities: Research Projects - Thematic Grants
• 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