title: Multiscale Surface-Attached Hydrogel Thin Films with Tailored Architecture.
abstract: A facile route for the fabrication of surface-attached hydrogel thin films with well-controlled chemistry and tailored architecture on wide range of thickness from nanometers to micrometers is reported. The synthesis, which consists in cross-linking and grafting the preformed and ene-reactive polymer chains through thiol-ene click chemistry, has the main advantage of being well-controlled without the addition of initiators. As thiol-ene click reaction can be selectively activated by UV-irradiation (in addition to thermal heating), micropatterned hydrogel films are easily synthesized. The versatility of our approach is illustrated by the possibility to fabricate various chemical polymer networks, like stimuli-responsive hydrogels, on various solid substrates, such as silicon wafers, glass, and gold surfaces. Another attractive feature is the development of new complex hydrogel films with targeted architecture. The fabrication of various architectures for polymer films is demonstrated: multilayer hydrogel films in which single-networks are stacked one onto the other, interpenetrating networks films with mixture of two networks in the same layer, and nanocomposite hydrogel films where nanoparticles are stably trapped inside the mesh of the network. Thanks to its simplicity and its versatility this novel approach to surface-attached hydrogel films should have a strong impact in the area of polymer coatings.
authors.affiliation: Sciences et Ingénierie de la Matière Molle, CNRS UMR 7615, École Supérieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI), ParisTech, PSL Research University , 10 rue Vauquelin, F-75231 Paris cedex 05, France.|SIMM, UPMC Univ Paris 06, Sorbonne-Universités , 10 rue Vauquelin, F-75231 Paris cedex 05, France.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Chollet
authors.affiliation: Sciences et Ingénierie de la Matière Molle, CNRS UMR 7615, École Supérieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI), ParisTech, PSL Research University , 10 rue Vauquelin, F-75231 Paris cedex 05, France.|SIMM, UPMC Univ Paris 06, Sorbonne-Universités , 10 rue Vauquelin, F-75231 Paris cedex 05, France.
authors.forename: Mengxing
authors.initials: M
authors.lastname: Li
authors.affiliation: Sciences et Ingénierie de la Matière Molle, CNRS UMR 7615, École Supérieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI), ParisTech, PSL Research University , 10 rue Vauquelin, F-75231 Paris cedex 05, France.|SIMM, UPMC Univ Paris 06, Sorbonne-Universités , 10 rue Vauquelin, F-75231 Paris cedex 05, France.
authors.forename: Ekkachai
authors.initials: E
authors.lastname: Martwong
authors.affiliation: Sciences et Ingénierie de la Matière Molle, CNRS UMR 7615, École Supérieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI), ParisTech, PSL Research University , 10 rue Vauquelin, F-75231 Paris cedex 05, France.|SIMM, UPMC Univ Paris 06, Sorbonne-Universités , 10 rue Vauquelin, F-75231 Paris cedex 05, France.
authors.forename: Bruno
authors.initials: B
authors.lastname: Bresson
authors.affiliation: Sciences et Ingénierie de la Matière Molle, CNRS UMR 7615, École Supérieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI), ParisTech, PSL Research University , 10 rue Vauquelin, F-75231 Paris cedex 05, France.|SIMM, UPMC Univ Paris 06, Sorbonne-Universités , 10 rue Vauquelin, F-75231 Paris cedex 05, France.
authors.forename: Christian
authors.initials: C
authors.lastname: Fretigny
authors.affiliation: Institut Pierre-Gilles de Gennes (IPGG) , 6-12 rue Jean Calvin, 75005 Paris, France.
authors.forename: Patrick
authors.initials: P
authors.lastname: Tabeling
authors.affiliation: Sciences et Ingénierie de la Matière Molle, CNRS UMR 7615, École Supérieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI), ParisTech, PSL Research University , 10 rue Vauquelin, F-75231 Paris cedex 05, France.|SIMM, UPMC Univ Paris 06, Sorbonne-Universités , 10 rue Vauquelin, F-75231 Paris cedex 05, France.
authors.forename: Yvette
authors.initials: Y
authors.lastname: Tran
keywords: hydrogel; multiple networks; responsive; surface-attached; thin film