DARMANIN , Thierry

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National audience

The control of the surface wettability of materials is very important for many applications. Since the discovery of the superhydrophobic surfaces in nature, their interest is increasing in the scientific community. On the basis of Wenzel and Cassie-Baxter models, who demonstrated the influence of the roughness and the chemistry of surface on...

Obtaining super-phobic surfaces for liquid dewetting, water and oil for example, are of both theoretical and practical interest, as has been reported in recent reviews. On the one hand, the wettability of rough solid surfaces is governed by their roughness / morphology at the nano/micro scale and their low surface energy materials presented at...

Due to the much lower surface tension of oils in comparison to water, it is extremely difficult to obtain superoleophobic properties and also both oleophobic and hydrophilic properties. While the obtaining of superoleophobic properties needs extremely complex surface structures such as re-entrant structures to impede the oil wetting, the...

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Here, we report for the first time parahydrophobic (high water adhesion) vertically aligned nanotubes by a one-step electropolymerization of naphtho[2,3-b]thieno[3,4-e][1,4]dioxine (NaphDOT) without surfactant and hard template. The formation of nanotubes is probably due to the stabilization by the polymer of gas bubbles produced in-situ during...

International audience

We report the synthesis and characterization of 3-alkyl-3,4-propylenedioxythiophene (ProDOT) of various alkyl chain lengths, their electropolymerization by cyclic voltammetry and the characterization of the surface morphology and wettability of the corresponding conducting polymers. We show the possible control of the fiber assembly in order to...

In the aim to produce superhydrophobic surface properties, the nanofibers are excellent candidates due to the possible control in the water adhesion by the nanofiber characteristics, for example. Here, we report the growth of nanofibers with various assemblies directly on surfaces by electropolymerization. For this purpose, an original...

This review allows to give an overview of recent advances in the potential applications of superhydrophobic materials. Such properties are characterized by extremely high water contact angle and various adhesion properties. The conception of superhydrophobic materials has been possible by studying and mimicking natural surfaces. Now, extremely...

The formation of superoleophobic materials is extremely important for various potential applications but are extremely difficult to obtain due to the low surface tension of oils. Here, we synthesized original fluorinated (C4F9, C6F13 and C8F17) 3,4-ethylenedioxypyrrole (EDOP) derivatives with polar glycol spacers (diethylene glycol or...

We report the synthesis and characterization of 3-alkyl-3,4-propylenedioxythiophene (ProDOT) of various alkyl chain lengths, their electropolymerization by cyclic voltammetry and the characterization of the surface morphology and wettability of the corresponding conducting polymers. We show the possible control of the fiber assembly in order to...

The invention relates to a multilayer superoleophobic and/or superhydrophobic material comprising: on the one hand, a first constituent that is a conductive substrate or a substrate that has previously been rendered conductive (1): • the surface of which is modified by chem. and/or phys. treatment (2); and/or • that incorporates a first...

The review reports most of the works realized in the field of the surface wettability based on conducting polymers. The surface wettability is highly depending on the intrinsic hydrophobicity of materials and the roughness geometry. Conducting polymers have unique properties allowing to tune the surface wettability, for example, by reversibly...

International audience

In order to produce pH- and voltage-switchable superhydrophobic surfaces, PEDOT derivatives containing various proportions of a EDOT monomer containing carboxylic groups (EDOT COOH) and EDOT monomer-containing dodecyl chains (EDOT O H12) are elaborated. The surface morphology and roughness depend highly on the proportion of the monomers....

The tuning of the surface morphology is crucial in the development of superhydrophobic surfaces with various wetting properties. Here, we report the synthesis and electrodeposition of poly(3,4-ethylenedioxypyrrole) (PEDOP) derivatives containing hydrocarbon chains (ethyl to tetradecyl). Surprisingly, the alkyl chain length has a very important...

The review reports most of the works realized in the field of the surface wettability based on conducting polymers. The surface wettability is highly depending on the intrinsic hydrophobicity of materials and the roughness geometry. Conducting polymers have unique properties allowing to tune the surface wettability, for example, by reversibly...

In order to find alternatives to long perfluorinated chains, due to their bioaccumulative potentials, in the elaboration of superoleophobic surfaces, an original 3,4-ethylenedioxypyrrole (EDOP) derivative containing a perfluorobutyl chain (F-butyl) is synthesized and characterized. The F-butyl chain is separated from the by a long undecyl...

International audience

International audience