Work

A pathogen imprinted hybrid polymer capacitive sensor for selective Escherichia coli detection

Year: 2020

Type: article

Abstract: A versatile pathogen imprinted polymer electrochemical sensor has been developed for Escherichia coli detection. The sensor is based on layer by layer assembly of multi‐walled carbon nanotubes (CNT), nanocellulose (CNC) films, integrated with polyaniline (PANI) doped phenylboronic acid (PBA). The sensing layer is a poly(methacrylic acid) based pathogen microcontact imprinted polymer (PIP). The PIP@PBA/PANI@CNT/CNC sensor exhibits a high affinity towards E. coli in real biological matrices, while effective in discriminating E. coli amidst other bacteria. Using capacitance and impedance as transduction methods, the PIP sensor recorded a low limit of E. coli detection of 8.7 ± 0.5 cfu/ml, with a rapid response of ≤5 min.

Source: Medical Devices & Sensors

DOI: 10.1002/mds3.10071

Authors: Samuel M. Mugo, Weihao Lu, Dhanjai Dhanjai

Institutions: MacEwan University, Concordia University of Edmonton

Language: English

Topic: Electrochemical sensors and biosensors

Subfield: Analytical Chemistry

Field: Chemistry

Domain: Physical Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $3,000