Fully-printed and silicon free self-powered electrochromic biosensors : Towards naked eye quantification
Aller Pellitero, Miguel (Institut de Microelectrònica de Barcelona)
Santiago, Sara (Universitat Autònoma de Barcelona. Departament de Química)
Ruiz, Jules (Centre National de la Recherche Scientifique. Université de Franche-Comté. Institut UTINAM)
Alonso, Yasmine (Universitat Autònoma de Barcelona. Departament de Química)
Lakard, Boris (Centre National de la Recherche Scientifique. Université de Franche-Comté. Institut UTINAM)
Hihn, Jean-Yves (Centre National de la Recherche Scientifique. Université de Franche-Comté. Institut UTINAM)
Guirado López, Gonzalo (Universitat Autònoma de Barcelona. Departament de Química)
del Campo, F. Javier (Institut de Microelectrònica de Barcelona)

Date:	2020
Abstract:	Electrochromic materials are becoming increasingly important in analytical devices and applications. Their opto-electronic properties make them particularly useful in the development of electronics-free, self-powered sensors. However, the mass manufacture of such devices is often limited by the need for transparent electrodes and liquid electrolyte systems. The self-powered biosensor presented here overcomes these limitations by means of a coplanar construction and a gel electrolyte. This configuration enables an effective separation between the sample and the electrochromic component, which allows the naked eye readout of the analyte concentration even if coloured or dark samples, such as blood, are used. This lack of contact between sample and electrochromic material also prevents the action of possible interferents on the electrochromic display, which is an additional advantage. Moreover, because the device is entirely screen-printed, its mass production is also feasible. The fabricated device features a glucose biosensor connected to a Prussian-Blue electrode, displaying a dynamic range between 2. 5 mM-10 mM that makes it suitable for blood testing and diabetes screening.
Grants:	Agència de Gestió d'Ajuts Universitaris i de Recerca PROD-0000114 Ministerio de Economía y Competitividad CTQ2015-65439-R
Note:	Altres ajuts: 2016 Leonardo grant from the BBVA Foundation (TIC-TIC-0007)
Rights:	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.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Glucose biosensor ; Prussian Blue ; Electrochromism ; Gel electrolyte ; Screenn-printed electrodes
Published in:	Sensors and actuators. B, Chemical, Vol. 306 (March 2020) , art. 127535, ISSN 1873-3077

DOI: 10.1016/j.snb.2019.127535

Postprint 18 p, 1.1 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group in Electrochemistry, Photochemistry and Organic Reactivity (GEFRO)
Articles > Research articles
Articles > Published articles