High conductivity Sepia melanin ink films for environmentally benign printed electronics.
Proc Natl Acad Sci U S A
; 119(32): e2200058119, 2022 08 09.
Article
em En
| MEDLINE
| ID: mdl-35914170
ABSTRACT
Melanins (from the Greek µÎλας, mélas, black) are bio-pigments ubiquitous in flora and fauna. Eumelanin is an insoluble brown-black type of melanin, found in vertebrates and invertebrates alike, among which Sepia (cuttlefish) is noteworthy. Sepia melanin is a type of bio-sourced eumelanin that can readily be extracted from the ink sac of cuttlefish. Eumelanin features broadband optical absorption, metal-binding affinity and antioxidative and radical-scavenging properties. It is a prototype of benign material for sustainable organic electronics technologies. Here, we report on an electronic conductivity as high as 10-3 S cm-1 in flexographically printed Sepia melanin films; such values for the conductivity are typical for well-established high-performance organic electronic polymers but quite uncommon for bio-sourced organic materials. Our studies show the potential of bio-sourced materials for emerging electronic technologies with low human- and eco-toxicity.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Eletrônica
/
Sepia
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Melaninas
Limite:
Animals
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Humans
Idioma:
En
Revista:
Proc Natl Acad Sci U S A
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Canadá