Combining 2D organic and 1D inorganic nanoblocks to develop free-standing hybrid nanomembranes for conformable biosensors

Autor: Jose García-Torres, Carmen Lázaro, Dioulde Sylla, Sonia Lanzalaco, Maria-Pau Ginebra, Carlos Alemán
Přispěvatelé: Universitat Politècnica de Catalunya. Departament de Ciència i Enginyeria de Materials, Institut de Recerca en Energía de Catalunya, Universitat Politècnica de Catalunya. Departament d'Enginyeria Química, Universitat Politècnica de Catalunya. BBT - Biomaterials, Biomecànica i Enginyeria de Teixits, Universitat Politècnica de Catalunya. IMEM-BRT- Innovation in Materials and Molecular Engineering - Biomaterials for Regenerative Therapies, Institut de Recerca Sant Joan de Déu, Institut de Recerca en Energia de Catalunya, Institut de Bioenginyeria de Catalunya
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Dipòsit Digital de la UB
Universidad de Barcelona
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Journal of Nanostructure in Chemistry
r-FSJD. Repositorio Institucional de Producción Científica de la Fundació Sant Joan de Déu
instname
ISSN: 2008-9244
Popis: We report a simple approach to fabricate free-standing perforated 2D nanomembranes hosting well-ordered 1D metallic nanostructures to obtain hybrid materials with nanostructured surfaces for flexible electronics. Nanomembranes are formed by alternatively depositing perforated poly(lactic acid) (PLA) and poly(3,4-ethylenedioxythiophene) layers. Copper metallic nanowires (NWs) were incorporated into the nanoperforations of the top PLA layer by electrodeposition and further coated with silver via a transmetallation reaction. The combination of 2D polymeric nanomembranes and aligned 1D metallic NWs allows merging the flexibility and conformability of the ultrathin soft polymeric nanomembranes with the good electrical properties of metals for biointegrated electronic devices. Thus, we were able to tailor the nanomembrane surface chemistry as it was corroborated by SEM, EDX, XPS, CV, EIS and contact angle. The obtained hybrid nanomembranes were flexible and conformable showing sensing capacity towards H2O2 with good linear concentration range (0.35–10 mM), sensitivity (120 µA cm−2 mM−1) and limit of detection (7 μm). Moreover, the membranes showed good stability, reproducibility and selectivity towards H2O2.
Databáze: OpenAIRE
Externí odkaz: