The French Society for Metallurgy and Materials (SF2M) has awarded the Jean Rist medal to Thierry Darmanin. The prize Jean Rist is awarded each year to French or foreign young metallurgists or specialists in materials science, which are distinguished by their work on materials (fundamental or applied).
His works concerns the elaboration of superhydrophobic and/or superoleophobic by electrodeposition of conducting polymers substituted by hydrophobic groups. In these works, He is interested in the control of the surface morphology and as a consequence the wetting properties (of water and oils) by playing on molecular conception of the monomer used for the depositions.
Several major facts were reported :
the possibility to elaborate superhydrophobic nanofibrous surfaces by electrodeposition of 3,4-ethylenedioxythiophene (EDOT) derivatives. The control of length, diameter, height of nanofibres, their orientation to the substrate or the density of nanofibers has been possible for example, by changing the length and hydrophobicity of the substituent, heteroatoms in 3- and 4-position of EDOT or the nature of the connector ;
the possibility to form superoleophobic nanoporous surfaces by electrodeposition of 3,4-ethylenedioxypyrrole (EDOP) derivatives. The control of the nanoporosity could also be done by tuning the length of the alkylenedioxy bridge, heteroatoms in 3- and 4-position of EDOP, nature of the connector and spacer. It has also been possible to obtain superoleophobic surfaces with short fluorinated chains (C4F9), which was never reported in the literature. The aim is to reduce the bioaccumulative potential of materials containing long perfluorinated chains.
Fluides & Matériaux Complexes, (Enseignants-)Chercheurs, Surfaces & Interfaces
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