Ultrathin optically transparent carbon electrodes produced from layers of adsorbed proteins

• Autores: Alharthi, Sarah A.; Benavidez, Tomás Enrique; Garcia, Carlos D.
• Año de publicación: 2013
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: OPTICALLY TRANSPARENT CARBON ELECTRODES; BOVINE SERUM ALBUMIN; NANOESTRUCTURED MATERIALS; GLUCOSE OXIDASE
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

This work describes a simple, versatile, and inexpensive procedure to prepare optically transparent carbon electrodes, using proteins as precursors. Upon adsorption, the protein-coated substrates were pyrolyzed under reductive conditions (5% H2) to form ultrathin, conductive electrodes. Because proteins spontaneously adsorb to interfaces forming uniform layers, the proposed method does not require a precise control of the preparation conditions, specialized instrumentation, or expensive precursors. The resulting electrodes were characterized by a combination of electrochemical, optical, and spectroscopic means. As a proof-of-concept, the optically transparent electrodes were also used as substrate for the development of an electrochemical glucose biosensor. The proposed films represent a convenient alternative to more sophisticated, and less available, carbon-based nanomaterials. Furthermore, these films could be formed on a variety of substrates, without classical limitations of size or shape.
Fil: Alharthi, Sarah A.. University Of Texas At San Antonio; Estados Unidos
Fil: Benavidez, Tomás Enrique. University Of Texas At San Antonio; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Garcia, Carlos D.. University Of Texas At San Antonio; Estados Unidos