A one year post-doctoral position is opened for a joint project between two laboratories of Sorbonne Université: PHENIX (UMR 8234) and LCMCP (UMR 7574).
Sujet: Probing organisation and scaffold flexibility of hydrogels: a combined NMR and NMRD approach
Hydrogels are exciting soft permeable materials with a high potential for biomedical as well as food industry applications. We have at hand a well-characterized hydrogel system based on
charged polymers, showing strong sensitivity to the scaffold counterion  and presenting a possibility of incorporation of charged nanoparticles, such as clay nanoplatelets . Regular stacking of clay nanoplatelets in the hydrogel paves the way to a highly interesting system with potentially anisotropic permeability. NMR based methods are to be used here to study firstly the scaffold flexibility (chain dynamics) using PFG-NMR. We wish to link scaffold flexibility to permeability of the hydrogels to guest
species. Secondly, nuclear magnetic relaxation dispersion (NMRD) will be used to probe the variety or environments accessible to water molecules. especially in the case of hydrogels with incorporated nanoparticles. This can clarify the availability of the nanoparticle surface for adsorption of guest species.
More details can be found here : https://phenix.cnrs.fr/poste/postdoc-hydrogels/
Expected start: December 2023
Directeur de Recherche
Laboratoire de Chimie de la Matière Condensée de Paris - LCMCP
 C. Hotton, J. Sirieix-Plénet, G. Ducouret, T. Bizien, A. Chennevière, L. Porcar, L. Michot, N. Malikova, Organisation of Clay Nanoplatelets in a Polvelectrolvte-Based Hydrogel. J. of Colloid and Interface Science 2021, 604, 358-367.
 C. Hotton. G. Ducouret. J. Sirieix-Plenet. T. Bizien. L. Porcar, N. Malikova. Tuning structure and rheological properties of polvelectrolvte-based hydrogels through countering speciric eftects. Macromolecules 2023.56.3. 923-933