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Ultrasensitive Detection of Biomarkers by Using a Molecular Imprinting Based Capacitive Biosensor

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Published on: February 16, 2018

Generic sensor platform based on electro-responsive molecularly imprinted polymer nanoparticles (e-NanoMIPs).

A Garcia-Cruz¹, O S Ahmad¹, K Alanazi¹

¹School of Chemistry, University of Leicester, Leicester, UK.

Microsystems & Nanoengineering

|September 27, 2021

Summary

This summary is machine-generated.

This study introduces electro-responsive molecularly imprinted polymer nanoparticles (e-MIPs) for robust electrochemical sensors. These sensors offer a generic, inexpensive, and disposable solution for detecting various analytes in clinical, environmental, and forensic settings.

Keywords:

Bionanoelectronics Nanoparticles

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Last Updated: Oct 19, 2025

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Area of Science:

Electrochemistry
Materials Science
Nanotechnology

Background:

Traditional biosensors often rely on enzyme-mediator pairs, which can be complex and costly.
There is a need for robust, generic, and inexpensive sensor platforms for diverse applications.

Purpose of the Study:

To design and develop novel electrochemical sensors utilizing electro-responsive molecularly imprinted polymer nanoparticles (e-MIPs).
To demonstrate the capability of e-MIPs to function as integrated recognition and reporting elements, replacing traditional enzyme-mediator systems.

Main Methods:

Synthesis of electro-responsive molecularly imprinted polymer nanoparticles (e-MIPs) tagged with a redox probe.
Utilizing the generic actuation phenomenon of e-MIPs, where polymer conformation changes upon analyte binding.
Employing voltammetric methods for quantitative analyte detection.

Main Results:

Developed robust electrochemical sensors based on e-MIPs.
Demonstrated successful analyte recognition and quantification through conformational changes and redox signaling.
Validated the sensor's performance for diverse analytes including trypsin, glucose, paracetamol, C4-homoserine lactone, and THC.

Conclusions:

The developed e-MIPs offer a versatile platform for electrochemical sensing.
This technology enables the creation of generic, inexpensive, and disposable sensors.
Potential applications span clinical diagnostics, environmental monitoring, and forensic analysis.