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MRS Online Proceedings Library (OPL) MRS Online Proceedings Library (OPL)

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Engineering of Porosity in Amorphous Materials. Plasma Oxidation of Hydrocarbon Templates in Polysilsesquioxanes*

Published online by Cambridge University Press:  21 February 2011

Douglas A. Loy ,
Richard J. Buss ,
Roger A. Assink ,
Kenneth J. Shea  and
Henry Oviatt
Douglas A. Loy
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185
Richard J. Buss
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185
Roger A. Assink
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185
Kenneth J. Shea
Affiliation:
Department of Chemistry, University of California, Irvine, CA 92717.
Henry Oviatt
Affiliation:
Department of Chemistry, University of California, Irvine, CA 92717.
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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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 346: Symposium N – Better Ceramics Through Chemistry VI , 1994 , 825
Copyright
Copyright © Materials Research Society 1998

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References

1 Brinker, C. J., Scherer, G. W., Sol-Gel Science (Academic Press: London, 1990).Google Scholar
2 Agaskar, P. A., J. Am. Chem. Soc. III, 6858 (1989).CrossRefGoogle Scholar
3 Kaszynski, P., Michl, J., J. Am. Chem. Soc. 110, 5225 (1988).CrossRefGoogle Scholar
4 Day, V. W., Klemperer, W. G., Mainz, V. V., Miller, D. M., J. Am. Chem.Soc. 107, 8262 (1985).CrossRefGoogle Scholar
5 Dines, M. B., DiaGiacomo, P. M., Inorg. Chem. 20, 92 (1981).CrossRefGoogle Scholar
6 Shea, K. J., Loy, D. A., Webster, O. W., Chem. Mater. 512 (1989).Google Scholar
7 Shea, K.J., Loy, D. A., Webster, O. W., J. Am. Chem. Soc. 114, 6700 (1992).CrossRefGoogle Scholar
8 Chujo, Y., Ihara, E., Kure, S., Susuki, K., Saegusa, T., Makromol. Chem., Macromol. Symp., 42/43 (Int. Symp. Ring Opening Cyclopolym., 6th, 1990), pp 303-12.Google Scholar
9 Roger, C., Hampden-Smith, M. J., Brinker, C. J. in Better Ceramics Through Chemistry V edited by Hampden-Smith, M. J., Klemperer, W. G., and Brinker, C. J. (Mater. Res. Soc. Symp. Proc.271 Pittsburgh, PA 1992), p. 51.Google Scholar
10 Loy, D. A., Ph.D. Dissertation, University of California at Irvine, 1991.Google Scholar
11 Small, J. H., Shea, K. J., Loy, D. A., J. Non-Cryst. Solids 160, 234 (1993).CrossRefGoogle Scholar
12 Oviatt, H., Shea, K. J., Small, J. H., Chem. Mater. 5, 943 (1993).CrossRefGoogle Scholar
13 Loy, D. A., Russick, E., Shea, K. J. in Better Ceramics Through Chemistry V. edited by Hampden-Smith, M. J., Klemperer, W. G., and Brinker, C. J. (Mater. Res. Soc. Symp. 271 Proc. Pittsburgh, PA 1992), p. 699.Google Scholar
14 T resonances in the 29Si NMR spectra arise from silicon species with one substituent attached through a carbon-silicon bond and three substituents attached with silicon-oxygen bonds: RSi(OH)3 = T°, [RSiO1.5] n= T3.Google Scholar
15 Brunauer, S., Emmett, P. H., Teller, E., J. Am. Chem. Soc. 60, 309 (1938).CrossRefGoogle Scholar

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