Exploring the Charge Transport of a Natural Eumelanin for Sustainable Technologies

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.

Automated summary

Eumelanin, a quinone-based biomaterial, is being explored as a model for medical and sustainable electronic interfaces due to its biocompatibility, biodegradability, and transducing abilities. This study investigates the charge transport of eumelanin produced from the S. parvus BSB49 strain using current-voltage measurements and impedance/dielectric spectroscopy under controlled humidity conditions. The results show no differences in the electrical response compared to standard synthetic eumelanin, suggesting the potential use of natural eumelanin in sustainable organic (bio)electronic applications.