Microstructural Characterization of Polystyrene-block-poly(ethylene oxide)-Templated Silica Films with Cubic-Ordered Spherical Mesopores

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DOIResolve DOI: http://doi.org/10.1021/la034798mS0743-7463(03)04798-X
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TypeArticle
Journal titleLangmuir
Langmuir
ISSN0743-7463
Volume19
Issue18
Pages72957301; # of pages: 7
AbstractWe report the synthesis and characterization of mesostructured thin silica films derived from methyltriethoxysilane (MTES) and/or tetraethyl orthosilicate (TEOS) silica precursors and polystyrene-block-poly(ethylene oxide) (PS-b-PEO) diblock copolymers via the solvent evaporation-induced self-assembly (EISA) process. It is found that the meso- and microstructure of the calcined films consists of cubic-ordered arrays of spherical mesopores of 5-7 nm in diameter, interconnected with a small number (4% by volume) of PEO-induced micropores of ~1 nm in diameter, as determined by new experimental results of transmission electron microscopy, N2 sorption, gas permeation, and grazing incidence small-angle X-ray scattering studies. The present comprehensive study of these novel closed-pore films should provide a general methodology for microstructural characterization of other related porous films prepared by similar self-assembly processes.
Publication date
AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
Identifier10367391
NPARC number12328383
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Record identifier26ccc580-2d9c-43d1-8394-8148a0bfe262
Record created2009-09-10
Record modified2016-05-09
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