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Séminaire Chimie ED459

Silsesquioxanes : synthesis and applications

Prof. Masafumi Unno (Department of Chemistry and Chemical Biology, International Education and Research Center for Silicon Science, Graduate School of Engineering – Gunma University, Japan)

publié le

Le Mardi 13 Septembre 2011 à 10h30
ENSCM, Amphithéâtre Gerhardt

Synthesis of highly regulated silsesquioxanes is now strongly desired especially from the industry because of recent high demanding to materials. Unlike conventional approach, we mostly control the structure of starting materials for the sake of the synthesis of highly regulated silsesquioxanes. Detailed synthesis and properties of these silsesquioxanes are summarized in the presentation.

Cyclic polysilanols possess multiple hydroxyl groups in the molecule, and potential precursors to highly regulated silsesquioxanes. We prepared many novel cyclic silanols,[1] and prepared cage, partial-cage, and ladder silsesquioxanes.[2] It is noteworthy that these silsesquioxanes shows expected high stability (thermal and photo- and radiochemical) as well as some unusual properties.


1. M. Unno, Y. Kawaguchi, Y. Kishimoto, H. Matsumoto, J. Am. Chem. Soc. 2005, 127, 2256-2263.
2. M. Unno, A. Suto, H. Matsumoto, J. Am. Chem. Soc. 2002, 124, 1574-1575.

Contact local ICGM : Michel Wong Chi Man (équipe AM2N)


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