Delayed Capillary Flow of Elastomers: An Efficient Method for Fabrication and Nanofunctionalization of Flexible, Foldable, Twistable, and Stretchable Electrodes from Pyrolyzed Paper

Autor(es)

Damasceno, Sergio ^{[1, 2]} ; Correa, Catia Crispilho ^[1] ; Gouveia, Rubia Figueredo ^[1] ; Strauss, Mathias ^[1] ; Bof Bufon, Carlos Cesar ^{[1, 2]} ; Santhiago, Murilo ^[1]

Afiliação do(s) autor(es)

^[1] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Nanotechnol Natl Lab LNNano, BR-13083970 Campinas, SP - Brazil

^[2] Sao Paulo State Univ UNESP, Postgrad Program Mat Sci & Technol POSMAT, BR-17033360 Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ADVANCED ELECTRONIC MATERIALS; v. 6, n. 1 NOV 2019.
• Citações Web of Science: 0

Resumo

Pyrolyzed cellulose-based materials are extensively used in many fields for many different applications due to their excellent electrical properties. However, pyrolyzed materials are extremely fragile and prone to crack. To address this issue, a new fabrication method is reported to delay the capillary flow of elastomeric materials into the porous structure of the paper. By changing the surface chemistry and porosity of the material, the capillary flow of the elastomer through the porous structure is delayed. Delayed capillary flow of elastomers (DCFE method) ensures both extremely high mechanical stability and electrochemical performance to the devices. Impressively, the electrochemical devices can be bent, folded, twisted, and stretched at 75% of their original length without hindering their electrochemical response. Moreover, cooperative nanofilms are prepared using a co-deposition process with Meldola's blue (MB) and polydopamine (PDA). While MB guarantees electrocatalytic properties toward nicotinamide adenine dinucleotide (NADH) electrooxidation, PDA increases the wettability of the surfaces and contribute to addressing hydrophobicity issues of elastomer-based devices. Remarkably, the nanofilms have unprecedented properties by self-collecting aqueous liquids. Furthermore, extreme mechanical tests do not impact the electrochemical performance of the nanofilms. (AU)

• Processo FAPESP: 14/25979-2 - Fabricação e caracterização de dispositivos e sistemas baseados em nanomembranas híbridas
• Beneficiário: Carlos César Bof Bufon
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 13/22127-2 - Desenvolvimento de novos materiais estratégicos para dispositivos analíticos integrados
• Beneficiário: Lauro Tatsuo Kubota
• Modalidade de apoio: Auxílio à Pesquisa - Temático