Porous siloxane-organic hybrid with ultrahigh surface area through simultaneous polymerization-destruction of functionalized cubic siloxane cages

Watcharop Chaikittisilp, Masaru Kubo, Takahiko Moteki, Ayae Sugawara-Narutaki, Atsushi Shimojima, Tatsuya Okubo

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91 Citations (Scopus)

Abstract

A novel hierarchically porous, hyper-cross-linked siloxane-organic hybrid (PSN-5) has been synthesized by Friedel-Crafts self-condensation of benzyl chloride-terminated double-four-ring cubic siloxane cages as a singular molecular precursor. Simultaneous polymerization of the organic functional groups and destruction of the siloxane cages during synthesis yielded PSN-5, which has an ultrahigh BET surface area (∼2500 m2 g-1) and large pore volume (∼3.3 cm3 g-1) that to our knowledge are the highest values reported for siloxane-based materials. PSN-5 also shows a high H2 uptake of 1.25 wt % at 77 K and 760 Torr.

Original languageEnglish
Pages (from-to)13832-13835
Number of pages4
JournalJournal of the American Chemical Society
Volume133
Issue number35
DOIs
Publication statusPublished - 2011 Sep 7

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ASJC Scopus subject areas

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

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