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Monolithic O/I-Hybrids with Hierarchically Ordered Meso- and Macropores

Published online by Cambridge University Press:  01 February 2011

Kazuki Nakanishi ,
Yuki Kobayashi ,
Tomohiko Amatani ,
Kazuyuki Hirao  and
Tetsuya Kodaira
Kazuki Nakanishi
Affiliation:
Department of Material Chemistry, Graduate School of Engineering, Kyoto University Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615–8510, JAPAN
Yuki Kobayashi
Affiliation:
Department of Material Chemistry, Graduate School of Engineering, Kyoto University Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615–8510, JAPAN
Tomohiko Amatani
Affiliation:
Department of Material Chemistry, Graduate School of Engineering, Kyoto University Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615–8510, JAPAN
Kazuyuki Hirao
Affiliation:
Department of Material Chemistry, Graduate School of Engineering, Kyoto University Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615–8510, JAPAN
Tetsuya Kodaira
Affiliation:
Nanoarchitectonics Research Center, National Institute of Science and Technology, 1–1–1, Higashi, Tsukuba-shi, Ibaraki 305–8565, Japan PRESTO, Japan Science and Technology Agency (JST), 4–1–8, Honcho, Kawaguchi City, Saitama 332–0012, Japan
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Abstract

Organic-Inorganic hybrid gels with hierarchical well-defined macropores and supramolecularly templated mesopores with long-range orders have been synthesized in the systems of bridged poly(silsesquioxane) systems. Nonionic surfactants such as poly(ethyleneglycol)-poly(propyleneglycol)- poly(ethyleneglycol) triblock copolymers, EOPOEOs, were found to be effective both in inducing the phase separation to give macroporous morphology and in templating the mesopores with narrow size distribution. The number of methylene units in the bridge, changed from 1 to 6 in the present experiments, affected both the phase separation tendency and template strength. In the system containing 1, 2-bis(trimethoxysilyl)ethane, 2D-hexagonal arrangement of mesopores have been prepared in the gel skeleton comprising the well-defined continuous macroporous network with an aid of micelle-stabilizing agent.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 847: Symposium EE – Organic/Inorganic Hybrid Materials , 2004 , EE3.2
Copyright
Copyright © Materials Research Society 2005

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References

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