title: Silanized aryl layers through thiol-yne photo-click reaction.
abstract: Nanometer-scale multilayered coatings were prepared by sequential surface reactions on gold plates. First 4-ethynylphenyl organic layer was electrografted from the parent diazonium tetrafluoroborate salt providing reactive alkynylated gold plate (Au-Y). The latter served for clicking mercaptosilane via a thiol-yne photo-triggered reaction to obtain alkoxysilane-functionalized surface. The trialkoxysilane top groups in turn served as anchor sites for the final sol-gel coating resulting from the surface reaction between aminopropylsilane and tetraethoxysilane (TEOS). It is demonstrated that two coupling agents, namely, aryl diazonium salt and silane, can be coupled using photo-triggered thiol-yne click reaction, resulting in robust multilayered coatings. In addition, the process is versatile in that it offers the possibility to design patterned surfaces. The top sol-gel layer can in turn be reacted with aminosilane, therefore providing a reactive and functional surface that can be used for different applications given the reactivity of amine groups. This approach opens new avenues for photo-triggered click reactions of aryl layers from diazonium salts. It shows that the new class of surface modifiers and coupling agents has much to offer and continues to be renewed for achieving tightly bound, reactive top coatings.
authors.affiliation: Laboratoire Méthodes et Techniques d'Analyse, Institut National de Recherche et d'Analyse Physico-Chimique, BiotechPole Sidi-Thabet, 2020 Ariana, Tunisia.
authors.forename: Marwen
authors.initials: M
authors.lastname: Bengamra
authors.affiliation: Laboratoire Méthodes et Techniques d'Analyse, Institut National de Recherche et d'Analyse Physico-Chimique, BiotechPole Sidi-Thabet, 2020 Ariana, Tunisia.
authors.forename: Akila
authors.initials: A
authors.lastname: Khlifi
authors.affiliation: Laboratoire Méthodes et Techniques d'Analyse, Institut National de Recherche et d'Analyse Physico-Chimique, BiotechPole Sidi-Thabet, 2020 Ariana, Tunisia.
authors.forename: Nadia
authors.initials: N
authors.lastname: Ktari
authors.affiliation: Institut de Chimie et des Matériaux Paris Est - Equipe Systèmes Polymères Complexes, UMR 7182 CNRS, Université Paris Est Créteil , 2-8 rue Henri Dunant, 94320 Thiais, France.
authors.forename: Samia
authors.initials: S
authors.lastname: Mahouche-Chergui
authors.affiliation: Institut de Chimie et des Matériaux Paris Est - Equipe Systèmes Polymères Complexes, UMR 7182 CNRS, Université Paris Est Créteil , 2-8 rue Henri Dunant, 94320 Thiais, France.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Carbonnier
authors.affiliation: SATIE, UMR CNRS 8029, ENS Cachan - Cnam, Cnam, 292 rue Saint Martin, 75003 Paris, France.
authors.forename: Najla
authors.initials: N
authors.lastname: Fourati
authors.affiliation: Laboratoire Méthodes et Techniques d'Analyse, Institut National de Recherche et d'Analyse Physico-Chimique, BiotechPole Sidi-Thabet, 2020 Ariana, Tunisia.
authors.forename: Rafik
authors.initials: R
authors.lastname: Kalfat
authors.affiliation: Institut de Chimie et des Matériaux Paris Est - Equipe Systèmes Polymères Complexes, UMR 7182 CNRS, Université Paris Est Créteil , 2-8 rue Henri Dunant, 94320 Thiais, France.|ITODYS, UMR CNRS 7086, Université Paris Diderot , Sorbonne Paris Cité, 15 rue J-A de Baïf, 75013 Paris, France.
authors.forename: Mohamed M
authors.initials: MM
authors.lastname: Chehimi