Melanin-inspired conductive thin films for multimodal-sensing wearable on-skin electronics
Contreras Pereda, Noemí (Institut Català de Nanociència i Nanotecnologia)
Suárez García, Salvio (Institut Català de Nanociència i Nanotecnologia)
Pfattner, Raphael (Institut de Ciència de Materials de Barcelona)
Ruiz-Molina, Daniel (Institut Català de Nanociència i Nanotecnologia)

Fecha:	2024
Resumen:	Electronic skins (e-skins), composed of various flexible sensors, mimic the sensing functions of human skin aiming for both healthcare monitoring and prosthetics development applications. So far different multi-component e-skin devices aimed to fulfill different requirements (biocompatibility, skin adhesion, flexibility, conductivity, sensitivity towards biological stimuli and stretchability) have been reported. However, the obtaining of such devices combining all the above requirements within a single material that simplifies not only cost but specially functioning still remains a challenge. For this, catechol-based materials have attracted special attention due to their adhesive properties, compatibility and melanin-like electrical conduction. In this work, 2,3,6,7,10,11 - hexahydroxy triphenylene (HHTP) was used as catechol moiety in a typical melanin-like polymerization, resulting in a free-standing melanin-inspired film (MN-film). The obtained MN-film showcased good conductivities with dual charge carriers (electrons and ions) under different environments, i. e. pure water and buffers simulating sweat. Large biocompatibility, adhesion and conformability to skin were obtained as well, allowing to implement the film in wearable electronic on-skin devices on porcine skin. Measurements in wearable devices indicated large sensitivity towards different stimuli (strain, motion and temperature) under sweat-like conditions.
Ayudas:	Agencia Estatal de Investigación PID2021-127983OB-C21 Agencia Estatal de Investigación CEX2021-001214-S "la Caixa" Foundation ID 100010434 Agencia Estatal de Investigación RyC2019-028474-I
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Melanin-inspired ; Wearable devices ; E-skin ; Thin films
Publicado en:	Materials Today Chemistry, Vol. 35 (January 2024) , art. 101855, ISSN 2468-5194

DOI: 10.1016/j.mtchem.2023.101855

8 p, 6.7 MB

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