Evaporation-induced self-assembly of hybrid bridged silsesquioxane film and particulate mesophases with integral organic functionality

Yunfeng Lu, Hongyou Fan, Nilesh Doke, Douglas A. Loy, Roger A. Assink, David A. LaVan, C. Jeffrey Brinker

Research output: Contribution to journalArticle

481 Scopus citations

Abstract

We report an evaporation-induced self-assembly procedure to prepare poly(bridged silsesquioxane) thin-film and particulate mesophases that incorporate organic moieties (1-3) into periodic, mesostructured frameworks as molecularly dispersed bridging ligands. Capacitance-voltage measurements along with a variety of structural characterization procedures were performed to begin to elucidate structure-property relationships of this new class of surfactant-templated mesophases. We observed a consistent trend of increasing modulus and hardness and decreasing dielectric constant with substitution of the bridged silsesquioxane (≡Si-(CH2)2-Si≡) for siloxane (≡Si-O-Si≡) in the framework. This preliminary evidence suggests that the introduction of integral organic groups into the frameworks of mesoporous materials can result in synergistic properties, promising an unprecedented ability to tune properties and function.

Original languageEnglish (US)
Pages (from-to)5258-5261
Number of pages4
JournalJournal of the American Chemical Society
Volume122
Issue number22
DOIs
StatePublished - Jun 7 2000
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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