Dialkylenecarbonate-bridged polysilsesquioxanes. Hybrid organic-inorganic sol-gels with a thermally labile bridging group

Douglas A Loy, James V. Beach, Brigitta M. Baugher, Roger A. Assink, Kenneth J. Shea, Joseph Tran, James H. Small

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

6 Citations (Scopus)

Abstract

In this paper, we introduce a new approach for altering the properties of bridged polysilsesquioxane xerogels using post-processing modification of the polymeric network. The bridging organic group contains latent functionalities that can be liberated thermally, photochemically, or by chemical means after the gel has been processed to a xerogel. These modifications can produce changes in density, solubility, porosity, and or chemical properties of the material. Since every monomer possesses two latent functional groups, the technique allows for the introduction of high levels of functionality in hybrid organic-inorganic materials. Dialkylenecarbonate-bridged polysilsesquioxane gels were prepared by the sol-gel polymerization of bis(triethoxysilylpropyl)carbonate (1) and bis(triethoxysilylisobutyl)carbonate (2). Thermal treatment of the resulting non-porous xerogels and aerogels at 300-350 °C resulted in quantitative decarboxylation of the dialkylenecarbonate bridging groups to give new hydroxyalkyl and olefinic substituted polysilsesquioxane monolithic xerogels and aerogels that can not be directly prepared through direct sol-gel polymerization of organotrialkoxysilanes.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium - Proceedings
PublisherMaterials Research Society
Pages99-104
Number of pages6
Volume576
StatePublished - 1999
Externally publishedYes
EventProceedings of the 1999 MRS Spring Meeting - Symposium DD, 'Organic/Inorganic Hybrid Materials' - San Francisco, CA, USA
Duration: Apr 5 1999Apr 9 1999

Other

OtherProceedings of the 1999 MRS Spring Meeting - Symposium DD, 'Organic/Inorganic Hybrid Materials'
CitySan Francisco, CA, USA
Period4/5/994/9/99

Fingerprint

Xerogels
Sol-gels
Aerogels
Carbonates
Gels
Polymerization
Density (specific gravity)
Chemical properties
Functional groups
Solubility
Porosity
Monomers
Heat treatment
polysilsesquioxane
Processing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Loy, D. A., Beach, J. V., Baugher, B. M., Assink, R. A., Shea, K. J., Tran, J., & Small, J. H. (1999). Dialkylenecarbonate-bridged polysilsesquioxanes. Hybrid organic-inorganic sol-gels with a thermally labile bridging group. In Materials Research Society Symposium - Proceedings (Vol. 576, pp. 99-104). Materials Research Society.

Dialkylenecarbonate-bridged polysilsesquioxanes. Hybrid organic-inorganic sol-gels with a thermally labile bridging group. / Loy, Douglas A; Beach, James V.; Baugher, Brigitta M.; Assink, Roger A.; Shea, Kenneth J.; Tran, Joseph; Small, James H.

Materials Research Society Symposium - Proceedings. Vol. 576 Materials Research Society, 1999. p. 99-104.

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

Loy, DA, Beach, JV, Baugher, BM, Assink, RA, Shea, KJ, Tran, J & Small, JH 1999, Dialkylenecarbonate-bridged polysilsesquioxanes. Hybrid organic-inorganic sol-gels with a thermally labile bridging group. in Materials Research Society Symposium - Proceedings. vol. 576, Materials Research Society, pp. 99-104, Proceedings of the 1999 MRS Spring Meeting - Symposium DD, 'Organic/Inorganic Hybrid Materials', San Francisco, CA, USA, 4/5/99.
Loy DA, Beach JV, Baugher BM, Assink RA, Shea KJ, Tran J et al. Dialkylenecarbonate-bridged polysilsesquioxanes. Hybrid organic-inorganic sol-gels with a thermally labile bridging group. In Materials Research Society Symposium - Proceedings. Vol. 576. Materials Research Society. 1999. p. 99-104
Loy, Douglas A ; Beach, James V. ; Baugher, Brigitta M. ; Assink, Roger A. ; Shea, Kenneth J. ; Tran, Joseph ; Small, James H. / Dialkylenecarbonate-bridged polysilsesquioxanes. Hybrid organic-inorganic sol-gels with a thermally labile bridging group. Materials Research Society Symposium - Proceedings. Vol. 576 Materials Research Society, 1999. pp. 99-104
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