title: Investigation of a novel fluorinated surfactant-based system for the design of spherical wormhole-like mesoporous silica.
abstract: In contrast to hydrogenated based systems that led to many studies, fluorinated surfactants have been little reported. Thanks to their high chemical and thermal stability, these compounds are considered as suitable candidates for the synthesis of porous materials with an enhanced hydrothermal stability. This study reports the synthesis of a new fluorinated surfactant, 2-trifluoromethyl-7,7,8,8,9,9,10,10,11,11,12,12,12-tridecafluoro-4-thia-1-dodecanoic acid (FSC) obtained from the thiol-ene radical addition of 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluoro-1-octanethiol onto 2-trifluoromethyl acrylic acid in 85% yield. In the aim of achieving micelles in water to design mesoporous materials according to the cooperative templating mechanism, FSC was modified with water-soluble telechelic diamine (Jeffamine) ED-600. The modified surfactant was deeply characterized by spectroscopic methods and the FSC-Jeffamine ED-600 micellar system was used as porogen to prepare mesoporous materials via the cooperative templating mechanism. Spherical wormhole-like mesostructured silica materials of high specific surface area (850m2/g) and homogeneous pore size distribution (ca. 3.4nm) were obtained by conveniently adjusting the porogen/silica molar ratio and the hydrothermal conditions.
authors: Université de Lorraine/CNRS, SRSMC, UMR 7565, F-54506 Vandoeuvre-lès-Nancy Cedex, France.
authors: Philippe
authors: P
authors: Riachy
authors: Engineering and Macromolecular Architectures, Institut Charles Gerhardt UMR (CNRS) 5253, Ecole Nationale Supérieure de Chimie de Montpellier, 8 Rue Ecole Normale, F-34296 Montpellier Cedex 5, France.
authors: Gérald
authors: G
authors: Lopez
authors: Université de Lorraine/CNRS, SRSMC, UMR 7565, F-54506 Vandoeuvre-lès-Nancy Cedex, France.
authors: Mélanie
authors: M
authors: Emo
authors: Université de Lorraine/CNRS, SRSMC, UMR 7565, F-54506 Vandoeuvre-lès-Nancy Cedex, France.
authors: Marie-José
authors: MJ
authors: Stébé
authors: Université de Lorraine/CNRS, SRSMC, UMR 7565, F-54506 Vandoeuvre-lès-Nancy Cedex, France. Electronic address: Jean-Luc.Blin@univ-lorraine.fr.
authors: Jean-Luc
authors: JL
authors: Blin
authors: Engineering and Macromolecular Architectures, Institut Charles Gerhardt UMR (CNRS) 5253, Ecole Nationale Supérieure de Chimie de Montpellier, 8 Rue Ecole Normale, F-34296 Montpellier Cedex 5, France. Electronic address: bruno.ameduri@enscm.fr.
authors: Bruno
authors: B
authors: Ameduri
keywords: 2-Trifluoromethyl acrylic acid; Fluorinated surfactant; Mesoporous materials; Micelles structure; Silica spheres