Graphene-Paper-Based Electrodes on Plastic and Textile Supports as New Platforms for Amperometric Biosensing
Journal article, 2021

The possibility of exfoliating graphite into graphene sheets allows the researchers to produce a material, termed “graphene paper” (G-paper), conductive as graphite but more flexible and processable. G-paper is already used for electronic applications, like conductors, antennas, and heaters, outperforming metal conductors thanks to its high flexibility, lightness, chemical stability, and compatibility with polymeric substrates. Here, the effectiveness in the use of G-paper for the realization of electrodes on flexible plastic substrates and textiles, and their applicability as amperometric sensors are demonstrated. The performance of these devices is compared with commercial platforms made of carbon-based inks, finding that they outperform commercial devices in sensing nicotinamide adenine dinucleotide (NADH), a key molecule for enzymatic biosensing; the electrodes can achieve state-of-the-art sensitivity (107.2 μA mm−1 cm−2) and limit of detection (0.6 × 10−6 m) with no need of additional functionalization. Thanks to this property, the stable deposition of a suitable enzyme, namely lactate dehydrogenase, on the electrode surface is used as a proof of concept of the applicability of this new platform for the realization of a biosensor. The possibility of having a single material suitable for antennas, electronics, and now sensing opens new opportunities for smart fabrics in wearable electronic applications.

flexible electronics

smart fabrics

electrochemical platforms

electrochemical biosensors

graphene paper

Author

Fabrizio Poletti

University of Modena and Reggio Emilia

A. Scidà

Consiglo Nazionale Delle Richerche

Barbara Zanfrognini

Consiglo Nazionale Delle Richerche

Alessandro Kovtun

Consiglo Nazionale Delle Richerche

Vitaliy Parkula

Consiglo Nazionale Delle Richerche

Laura Favaretto

Consiglo Nazionale Delle Richerche

M. Melucci

Consiglo Nazionale Delle Richerche

Vincenzo Palermo

Chalmers, Industrial and Materials Science, Materials and manufacture

Consiglo Nazionale Delle Richerche

E. Treossi

Consiglo Nazionale Delle Richerche

Chiara Zanardi

University of Modena and Reggio Emilia

Consiglo Nazionale Delle Richerche

Advanced Functional Materials

1616-301X (ISSN)

Vol. In Press

Subject Categories

Analytical Chemistry

Textile, Rubber and Polymeric Materials

Materials Chemistry

Areas of Advance

Health Engineering

DOI

10.1002/adfm.202107941

More information

Latest update

11/9/2021