Engineering of porosity in amorphous materials. Plasma oxidation of hydrocarbon templates in polysilsesquioxanes

Douglas A Loy, Richard J. Buss, Roger A. Assink, Kenneth J. Shea, Henry Oviatt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)

Abstract

Arylene- and alkylene-bridged polysilsesquioxanes were prepared by sol-gel processing of bis(triethoxysilyl)-arylene monomers 1-4, and alkylene monomers 5-9. The arylene polysilsesquioxanes were porous materials with surface areas as high as 830 m2/g (BET). Treatment with an inductively coupled oxygen plasma resulted in the near quantitative removal of the arylene bridging groups and a coarsening of the pore structure. Solid state 29Si NMR was used to confirm the conversion of the sesquioxane silicons (T) to silica (Q). The alkylene-bridged polysilsesquioxanes were non-porous. Oxygen plasma treatment afforded silica gels with mesoporosity. The porosity in the silica gels appears to arise entirely from the oxidation of the alkylene spacers.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium - Proceedings
PublisherMaterials Research Society
Pages825-829
Number of pages5
Volume346
StatePublished - 1994
Externally publishedYes
EventProceedings of the 1994 MRS Spring Meeting - San Francisco, CA, USA
Duration: Apr 4 1994Apr 8 1994

Other

OtherProceedings of the 1994 MRS Spring Meeting
CitySan Francisco, CA, USA
Period4/4/944/8/94

Fingerprint

Silica gel
Hydrocarbons
Porosity
Monomers
Silica Gel
Plasmas
Oxidation
Oxygen
Coarsening
Pore structure
Sol-gels
Porous materials
Silica
Nuclear magnetic resonance
Silicon
Silicon Dioxide
Processing
polysilsesquioxane

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Loy, D. A., Buss, R. J., Assink, R. A., Shea, K. J., & Oviatt, H. (1994). Engineering of porosity in amorphous materials. Plasma oxidation of hydrocarbon templates in polysilsesquioxanes. In Materials Research Society Symposium - Proceedings (Vol. 346, pp. 825-829). Materials Research Society.

Engineering of porosity in amorphous materials. Plasma oxidation of hydrocarbon templates in polysilsesquioxanes. / Loy, Douglas A; Buss, Richard J.; Assink, Roger A.; Shea, Kenneth J.; Oviatt, Henry.

Materials Research Society Symposium - Proceedings. Vol. 346 Materials Research Society, 1994. p. 825-829.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Loy, DA, Buss, RJ, Assink, RA, Shea, KJ & Oviatt, H 1994, Engineering of porosity in amorphous materials. Plasma oxidation of hydrocarbon templates in polysilsesquioxanes. in Materials Research Society Symposium - Proceedings. vol. 346, Materials Research Society, pp. 825-829, Proceedings of the 1994 MRS Spring Meeting, San Francisco, CA, USA, 4/4/94.
Loy DA, Buss RJ, Assink RA, Shea KJ, Oviatt H. Engineering of porosity in amorphous materials. Plasma oxidation of hydrocarbon templates in polysilsesquioxanes. In Materials Research Society Symposium - Proceedings. Vol. 346. Materials Research Society. 1994. p. 825-829
Loy, Douglas A ; Buss, Richard J. ; Assink, Roger A. ; Shea, Kenneth J. ; Oviatt, Henry. / Engineering of porosity in amorphous materials. Plasma oxidation of hydrocarbon templates in polysilsesquioxanes. Materials Research Society Symposium - Proceedings. Vol. 346 Materials Research Society, 1994. pp. 825-829
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