Reviewing the use of chitosan and polydopamine for electrochemical sensing

Prabhu, A, Crapnell, RD ORCID: https://orcid.org/0000-0002-8701-3933, Eersels, K, van Grinsven, B, Kunhiraman, AK, Singla, P, McClements, J, Banks, CE ORCID: https://orcid.org/0000-0002-0756-9764, Novakovic, K and Peeters, M (2022) Reviewing the use of chitosan and polydopamine for electrochemical sensing. Current Opinion in Electrochemistry, 32. p. 100885. ISSN 2451-9103

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Abstract

Biopolymers possess highly favorable properties for electrochemical biosensing such as their inherent biocompatibility, inexpensive nature, and strong interfacial adhesion. In this mini-review, we will focus on chitosan and polydopamine, two of the most commonly used biopolymers, for electrochemical sensing applications. Chitosan is a polysaccharide that exhibits high chemical resistance, offers straightforward modification and cross-linking, and possesses antibacterial properties and mucoadhesion. Polydopamine has the benefit of universal adhesion, in addition to the ability to form self-assembled structures. We will demonstrate how the unique structural and electrochemical features of these biopolymers can be used in a range of electrochemical biosensing platforms.