Journal ArticleDOI
Humidity-controlled mesostructuration in CTAB-templated silica thin film processing. The existence of a modulable steady state
Florence Cagnol,David Grosso,Galo J. A. A. Soler-Illia,Eduardo L. Crepaldi,Florence Babonneau,Heinz Amenitsch,Clément Sanchez +6 more
TLDR
In this paper, a study of the self-assembly process that takes place during CTAB-templated silica film formation through in situ SAXS, interferometry and water titration investigations during evaporation associated with dip coating under various conditions is presented.Abstract:
A study is presented of the self-assembly process that takes place during CTAB-templated silica film formation through in situ SAXS, interferometry and water titration investigations during evaporation associated with dip coating under various conditions. This work shows that the quantity of water present in the film when the mesostructuration takes place depends on the relative humidity (RH) during deposition. Indeed, the system contains considerable quantities of water at high RH, while it loses water at low RH. The water content is demonstrated to be a critical parameter, as poorly ordered, 2D-hexagonal or 3D-cubic final structures are obtained, depending on the RH, in agreement with the general physico-chemical laws of CTAB mesophases. Furthermore, changing the RH or the solvent vapour pressure just after evaporation induces a film composition change and a potential mesostructure modification, evidencing a modulable steady state, during which the mesostructure can be modified by external influences. The present study pinpoints the role of processing conditions that are often considered secondary to chemical conditions. The conclusions of this study into the CTAB–TEOS system are also relevant to other surfactant-templated systems which undergo evaporation-controlled self-assembly.read more
Citations
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Journal ArticleDOI
On the Controllable Soft-Templating Approach to Mesoporous Silicates
Ying Wan,Dongyuan Zhao +1 more
Journal ArticleDOI
Biomimetism and bioinspiration as tools for the design of innovative materials and systems.
TL;DR: Materials found in nature combine many inspiring properties such as sophistication, miniaturization, hierarchical organizations, hybridation, resistance and adaptability to propose more reliable, efficient and environment-respecting materials requires a multidisciplinary approach.
Journal ArticleDOI
Controlled formation of highly organized mesoporous titania thin films: from mesostructured hybrids to mesoporous nanoanatase TiO2.
Eduardo L. Crepaldi,Galo J. A. A. Soler-Illia,David Grosso,Florence Cagnol,François Ribot,Clément Sanchez +5 more
TL;DR: The complete synthesis and characterization procedures to generate highly organized and oriented mesoporous titania thin films, using poly(ethylene oxide) (PEO)-based templates are reported.
Journal ArticleDOI
Design, Synthesis, and Properties of Inorganic and Hybrid Thin Films Having Periodically Organized Nanoporosity†
TL;DR: In this paper, the authors present an extensive discussion on the major advances in the field of periodically organized mesoporous thin films (POMTFs) obtained via surfactant templated growth of inorganic or hybrid polymers.
Journal ArticleDOI
Probing surface and interface morphology with Grazing Incidence Small Angle X-Ray Scattering
TL;DR: A review of the GISAXS technique, from experimental issues to the theories underlying the data analysis, with a wealth of examples, can be found in this paper, where the authors introduce the notions of particle form factor and interference function, together with the different cases encountered according to the size/shape dispersion.
References
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A new family of mesoporous molecular sieves prepared with liquid crystal templates
Jeffrey S. Beck,James C. Vartuli,Wieslaw J. Roth,M. E. Leonowicz,Charles T. Kresge,Kirk D. Schmitt,Cynthia Ting-Wah Chu,David H. Olson,E. W. Sheppard,S. B. McCullen,J. B. Higgins,J.L. Schlenker +11 more
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Chemical strategies to design textured materials: from microporous and mesoporous oxides to nanonetworks and hierarchical structures.
Abstract: 3.
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Continuous formation of supported cubic and hexagonal mesoporous films by sol–gel dip-coating
Yunfeng Lu,R. Ganguli,C. A. Drewien,M.T. Anderson,C. J. Brinker,Weiliang Gong,Guo Yx,Soyez H,Bruce Dunn,Michael H. Huang,Jeffrey I. Zink +10 more
TL;DR: In this article, a solgel-based dip-coating method for the rapid synthesis of continuous mesoporous thin films on a solid substrate is presented, which can be used for membrane-based separations, selective catalysis and sensors.
Journal ArticleDOI
Aerosol-assisted self-assembly of mesostructured spherical nanoparticles
Yunfeng Lu,Hongyou Fan,Aaron Stump,Timothy L. Ward,T. P. Rieker,C. Jeffrey Brinker,C. Jeffrey Brinker +6 more
TL;DR: In this article, the authors report a rapid, aerosol process that results in solid, completely ordered spherical particles with stable hexagonal, cubic, or vesicular mesostructures, which relies on evaporation-induced interfacial self-assembly confined to a spherical aerosol droplet.