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Submicron magnetic core conducting polypyrrole polymer shell: Preparation and characterization

Abstract : Magnetic particles are of great interest in various biomedical applications, such as, sample preparation, in vitro biomedical diagnosis, and both in vivo diagnosis and therapy. For in vitro applications and especially in labs-on-a-chip, microfluidics, microsystems, or biosensors, the needed magnetic dispersion should answer various criteria, for instance, submicron size in order to avoid a rapid sedimentation rate, fast separations under an applied magnetic field, and appreciable colloidal stability (stable dispersion under shearing process). Then, the aim of this work was to prepare highly magnetic particles with a magnetic core and conducting polymer shell particles in order to be used not only as a carrier, but also for the in vitro detection step. The prepared magnetic seed dispersions were functionalized using pyrrole and pyrrole-2-carboxylic acid. The obtained core–shell particles were characterized in terms of particle size, size distribution, magnetization properties, FTIR analysis, surface morphology, chemical composition, and finally, the conducting property of those particles were evaluated by cyclic voltammetry. The obtained functional submicron highly magnetic particles are found to be conducting material bearing function carboxylic group on the surface. These promising conducting magnetic particles can be used for both transport and lab-on-a-chip detection.
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https://hal.archives-ouvertes.fr/hal-01275272
Contributor : Agnès Bussy <>
Submitted on : Wednesday, February 17, 2016 - 11:04:25 AM
Last modification on : Friday, April 17, 2020 - 5:16:02 PM

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Ernandes Taveira Tenorio-Neto, Abdoullatif Baraket, Dounia Kabbaj, Abdelhamid Errachid, Hatem Fessi, et al.. Submicron magnetic core conducting polypyrrole polymer shell: Preparation and characterization. Materials Science and Engineering: C, Elsevier, 2016, 61, pp.688-694. ⟨10.1016/j.msec.2015.12.052⟩. ⟨hal-01275272⟩

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