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Journal of Bionic Engineering 2017年第3期14卷 468-475页

作者： Guilhem Godeau Marek Dovcik Frederic Guittard thierry darmanin Universite Cote d'Azur NICE Lab 1MREDD Pare Valrose 061 O0 Nice France

Numerous exceptional properties can be observed in nature. Among these properties, parahydrophobic feature is of in- terest. This property describes material with high adhesion with water such as rose petals or gecko foot. Such kind of surface presents a real potential for applications in the field of water harvesting systems. In this work, we report a new synthetic strategy to mimic this property. Here, we combine three strategies in one, First, a monomer is electropolymerized in order to form the starting structured surface. Then, nanoparticles are grafted on the surface to increase the structuration and consequently to create the reactive surface. Finally, the grafted surface is post-functionalized （Huisgen reaction） with various aryl alkynes to control the surface chemistry and energy. This strategy allows to reach surfaces with both very high hydrophobic properties （0= 140~） and high water adhesion. This work also includes the surface wettability, roughness and morphology investigation in order to study the impact of the starting monomer structure and post-functionalization on the surface properties.

关键词： conductive polymers nanostructures click chemistry superhydrophobic adhesion

Wetting Transition from Hydrophilic to Superhydrophobic over Dendrite Copper Leaves Grown on Steel Meshes

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Journal of Bionic Engineering 2019年第4期16卷 719-729页

作者： Raziyeh Akbari Guilhem Godeau Mohammadreza Mohammadizadeh Frederic Guittard thierry darmanin Supermaterials Research Lab(SRL) Department of PhysicsUniversity of TehranNorth KargarAv.14395-547TehranIran Universite Cote d'Azur NICE LabParc Valrose 06100 NiceFrance

With the development of water purification technologies,the usage of superhydrophobic meshes is increased but the fabrication of durable and cost effective superhydrophobic meshes is still ***,the formation of hierarchical copper fractals on stainless steel meshes and their superhydrophobicity without any physical or chemical modification were *** addition,the improvement of superhydrophobicity of surfaces during storing in a glass bottle for a long time(>one year)is *** structures were prepared using electrodeposition method applying cyclic voltammetry and square pulse deposition approaches on stainless steel meshes with 50μm,100μm and 200μm pore *** prepared layers are a composition of copper with varying amounts of cuprite(Cu20)depending on deposition method and mesh pore ***-prepared cyclic voltammetry layer on 100μm mesh showed the parahydrophobicity with the contact angle of 154°but a large sliding *** one-year stored samples in the glass bottle showed superhydrophobicity with the contact angles larger than 150°and sliding angles in the range of 4°-20°.The observed improvement of superhydrophobicity is a great success in the realm of industrial water purification,while most other proposed samples by the others have problems related to the durability of superhydrophobicity.

关键词： superhydrophobic mesh dendrite nanostructure copper electrodeposition

Effect of Electrolyte Nature on Micellar Soft-Template Electropolymerization in Organic Solvent to Form Nanoporous Polymer Films with a Bioinspired Strategy

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Journal of Bionic Engineering 2022年第2期19卷 547-553页

作者： Caroline Fradin Francois Orange Sonia Amigoni Frédéric Guittard thierry darmanin NICE Lab UniversitéCote d’Azur06100 NiceFrance Centre Commun de Microscopie Appliquée(CCMA) UniversitéCote d’Azur06100 NiceFrance

Here,using a bioinspired approach,the soft-template electropolymerization of naphtho[2,3-b]thieno[3,4-e][1,4]dioxine(NaphDOT)was conducted in dichloromethane with different water content,and using different supporting *** role of the electrolytes in the formation of reverse micelles that constitutes the soft template is *** reverse micelles stabilized by the electrolyte and the monomer were observed by TEM and related to the various porous nanostructures of the obtained polymer *** show that the nature of the electrolyte is not only fundamental for the formation of reverse micelles and thus porous nanostructures,but also plays a huge role in the good deposition of the oligomers upon the soft *** with nanostructures such as nanotubes,nanorings or nanomembranes were realized.

关键词： Electropolymerization Soft template Reverse micelles Porous nanostructures

Surface Nanostructure Control with Poly(ethylene glycol)(PEG)Spacer by Templateless Electropolymerization

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Journal of Bionic Engineering 2021年第1期18卷 65-76页

作者： Imen Bousrih Mejda El Kateb Mohammed Beji Fréderic Guittard thierry darmanin University of Tunis El Manar Laboratory of Structural Organic ChemistryFaculty of Sciences of TunisTunis 2092Tunisia Universite Cote d'Azur NICE LabParc Valrose Nice 06100France

Controlling the shape of surface nanostructures is fundamental for various potential applications for cxamples,in water harvesting systems,liquid transportation or oil/water separation *** this paper,the creation of porous surface structures is made by a process called templateless electropolymerization,in which water(H_(2)0)is oxidizedreduced to form gas(O_(2)/H_(2))bubbles onto the surfaces and acting as soft template for the polymer *** the monomer(thieno[3,4-b]lhiophene)and the substituent(pyrene)constant,we demonstrate how a flexible PEG spacer can affect the structure *** the PEG spacer increases,the structures change frorm nanotubes(1D growth)to nanoribbons(2D)and after to hollow nanospheres(3D),which also affeets the wettig propertics.

关键词： nanostructures wettability hydrophobicity electrochemistry bioinspiration

Formation of Nanotubular Structures with Petal Effect by Soft-Template Electropolymerization of Benzotrithiophene with Hydrophilic Carboxyl Group

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Journal of Bionic Engineering 2022年第4期19卷 1054-1063页

作者： Maroua Khodja Imen Bousrih Mejda El Kateb Mohammed Beji Frederic Guittard thierry darmanin Laboratory of Structural Organic Chemistry Faculty of Sciences of Tunis University of Tunis El Manar2092 TunisTunisia NICE Lab Universite Cote d’Azur06100 NiceFrance

The bioinspiration is one of the best ways to make a breakthrough in a field,and particularly in the wetting *** by natural species,such as rose petals and gecko foot,and previous researches,nanotubular structures are prepared here by soft-template electropolymerization in organic solvent and using an original benzotrithiophene with a hydrophilic carboxyl group,as the *** best results are obtained by cyclic voltammetry because of a much higher amount of gas bubbles released with this deposition *** nanoparticles and nanotubes are observed while the water content has an influence on the number of *** if the monomer has hydrophilic carboxyl group,the best films have both high hydrophobicity(apparent water contact angle up to 130.7°)and strong water adhesion(petal effect).These surfaces could be used in future in applications such as water harvesting systems.

关键词： Bioinspired Electropolymerization Hydrophobicity Nanostructures Nanotubes Wettability