Laboratoire MAPIEM (EA 4323)

Matériaux Polymères Interfaces Environnement Marin

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Development of new copper (II) ion sensors for the control of the quality of harbour waters

SALA Alexandre
Durability & Functional materials - Ion and Molecularly Imprinted Polymers (IMIP)

Supervisors: BRANGER Catherine, BRISSET Hugues, MARGAILLAN André

Abstract

The concentration of copper ions in coastal waters has seen an increase in the last few decades due to its use as a biocide in anti-fouling marine coatings. However, it can negatively affect the ecosystem and health when exceeding certain thresholds.
Thus, it is vital to develop an innovative tool to do real-time analysis of this pollutant with a detection limit low enough to measure trace amounts. This sensor should be cheap to manufacture and easy to use to ensure its large scale deployment.
A chemical sensor consists of a recognition phase and a transducer that transforms the chemical "trapping" of copper (II) into a measurable signal (for example, electrochemical or optical signal). Ion-imprinted polymers (IIP) are tridimensional polymer networks capable of chelating specific ions thanks to the chelation of the target with a functional monomer. These high-specificity polymers can be used as the recognition phase of the sensor.
The main objective of this PhD is to integrate copper (II)-imprinted polymers in electrochemical or optical sensors to meet the previously stated criteria.

Development of new copper (II) ion sensors for the control of the quality of harbour waters

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