New group XIV oxide network materials: polygerm- and polygermsilsequioxanes

Gregory M. Jamison, Dougles A. Loy, Kenneth J. Shea

Research output: Contribution to journalConference article

Abstract

Alklylene-bridged polygerm- and polygermsilsesquioxanes have been formed by hydrolysis-condensation of their corresponding (EtO)3 M(CH2)n Ge(OEt)3 monomers under HCl- and NEt3 -catalyzed conditions in ethanol. Solid state 13C and 29Si NMR indicate the retention of the alkylene bridging moiety during poylmerization; infrared analysis suggests the formation of a small amount of olefinic group. The resulting aerogels are mesoporous materials with high surface areas. Incorporation of the short ethylene bridging unit results in higher surface areas than when hexylene bridges are present. The hexylene bridging group also gives rise to desorption hystereses indicating the presence of bottlenecks in their pore structure.

Original languageEnglish (US)
Pages (from-to)339-340
Number of pages2
JournalPolymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Materials Science and Engineering
Volume69
StatePublished - Dec 1 1993
Externally publishedYes
EventProceedings of the American Chemical Society Division of Polymeric Materials - Science and Engineering - Chicago, IL, USA
Duration: Jun 11 1993Jun 11 1993

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Polymers and Plastics

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