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Title: | Hierarchical meso-mesoporous and macro-mesoporous silica templated by mixtures of polyoxyethylene fluoroalkyl ether and triblock copolymer |
Author: | May Masnou, Anna Stébé, Marie José Blin, Jean Luc |
Keywords: | Agents tensioactius Materials porosos Silici Emulsions Surface active agents Porous materials Silicon Emulsions |
Issue Date: | 23-Dec-2015 |
Publisher: | Wiley-VCH |
Abstract: | We report here the synthesis of different kinds of hierarchical porous silica materials by using mixtures of an amphiphilic block copolymer (Pluronic P123) and a nonionic fluorinated surfactant. In particular, we have taken advantage of the difference in polarities between the two compounds to design dual-mesoporous materials through the cooperative templating mechanism (CTM). We have undertaken a complete study of this system by varying the composition of the mixed micelles and the synthesis conditions. We have shown that both the dual-mesoporosity and the mesopore ordering are favored when materials are prepared with fluorine-rich and P123-rich micelles. However, when the P123-rich micelles predominate, the mesostructure is less organized and the dual-porosity depends on the P123 content. In addition, concentrated emulsions were formed by incorporating perfluorodecalin (PFD) in the surfactant mixture, and hierarchical macro-mesoporous materials were prepared by combining the CTM and the emulsion templating mechanism. |
Note: | Versió postprint del document publicat a: http://dx.doi.org/10.1002/ejic.201501168 |
It is part of: | European Journal of Inorganic Chemistry, 2015 |
URI: | http://hdl.handle.net/2445/97404 |
Related resource: | http://dx.doi.org/10.1002/ejic.201501168 |
ISSN: | 1434-1948 |
Appears in Collections: | Articles publicats en revistes (Enginyeria Química i Química Analítica) |
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