Hostname: page-component-54dcc4c588-mz6gc Total loading time: 0 Render date: 2025-10-11T06:21:04.617Z Has data issue: false hasContentIssue false
  • English
  • Français

Alkynyl Substituted Carboranes as Precursors to Boron Carbide Thin Films, Fibers and Composites

Published online by Cambridge University Press:  25 February 2011

Stephen E. Johnson ,
Xiaoguang Yang ,
M. F. Hawthorne ,
Kevin J. Thorne ,
Haixing Zheng  and
John D. Mackenzie
Stephen E. Johnson
Affiliation:
UCLA Department of Chemistry and Biochemistry, Los Angeles, CA, 90024.
Xiaoguang Yang
Affiliation:
UCLA Department of Chemistry and Biochemistry, Los Angeles, CA, 90024.
M. F. Hawthorne
Affiliation:
UCLA Department of Chemistry and Biochemistry, Los Angeles, CA, 90024.
Kevin J. Thorne
Affiliation:
UCLA Materials Science and Engineering Department, Los Angeles, CA, 90024.
Haixing Zheng
Affiliation:
UCLA Materials Science and Engineering Department, Los Angeles, CA, 90024.
John D. Mackenzie
Affiliation:
UCLA Department of Chemistry and Biochemistry, Los Angeles, CA, 90024.
Get access

Abstract

The use of alkynyl substituted derivatives of o-carborane as precursors to boron containing ceramics is described. These compounds undergo a thermally or photochemically induced polymerization to afford cross linked polyakynyl-o-carborane derivatives. The increase in molecular weight should allow for increased Tg's and the retention of modelled polymer preforms. In this report, these modification reactions are described. In addition, the retention of molded polymer preforms were analyzed after UV exposure and inert atmosphere pyrolysis.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 271: Symposium N – Better Ceramics Through Chemistry V , 1992 , 833
Copyright
Copyright © Materials Research Society 1992

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

REFERENCES

[1] Wynne, K. and Rice, R. W., Ann. Rev. Mater. Sci. 14, 297 (1984).Google Scholar
[2] West, R. W., in Ultrastrructure Processing of Ceramics. Glasses, and Composites, edited by Hench, L. and Ulrich, D. L. (J. Wiley and Sons, New York, 1984).Google Scholar
[3] Yajima, S., Amer. Ceram. Soc. Bull. 62, 892 (1983).Google Scholar
[4] Willis, R. R., Markle, R. A., Mukherjee, S. P., Amer. Ceram. Soc. Bull. 62, 904 (1983).Google Scholar
[5] Richerson, D. R., Modern Ceramics Engineering. (Marcel Dekker, New York, 1983).Google Scholar
[6] Greenwood, N. N., The Chemistry of Boron, Vol. 8, (Pergamon, Oxford, 1973).Google Scholar
[7] Wood, C. A., Phys. Rev. B 29, 4582 (1984).CrossRefGoogle Scholar
[8] Mirabelli, M. G. and Sneddon, L. G., J. Amer. Chem. Soc. 110, 3305 (1988); Sol. St. Ionics, 32–33, Pt. 2, 655 (1989).Google Scholar
[9] Rees, W. S., Seyferth, D., Ceram. Eng. Soc. Proc. 9 (7–8), 1009 (1983),CrossRefGoogle Scholar
Rees, W. S., Seyferth, D., Ceram. Eng. Soc. Proc., 2 (7–8), 1021 (1983); Mater. Res. Symp. Proc. 121, 449 (1988).Google Scholar
[10] Johnson, R. S., U. S. Patent 4, 810, 436 (1989).Google Scholar
[11] Rice, R. W., Wynne, K. J., Fox, W. B., U. S. Patent 4,097,294 (1978).Google Scholar
[12] Walker, B. E., Rice, R. W., Becher, P. F., Bender, B. A., Coblenz, W. S., Am. Ceram. Soc. Bull., 62, 916 (1983).Google Scholar
[13] Gmelin Handbuch der Anorganische Chemie. Boron; Suppl., Vol. 2 (1981).Google Scholar
[14] Getman, T. D., Garrett, P. M., Knobler, C. B., Hawthorne, M. F., Thome, K., Mackenzie, J. D., Organometallics, in press (1992).Google Scholar
[15] Zheng, H., Thorne, K., Mackenzie, J. D., Yang, X., Hawthorne, M. F., Mater. Res. Symp. Proc, in press (1991).Google Scholar
[16] Johnson, S. E., Gomez, F. A., Hawthorne, M. F., Thorne, K. J., Mackenzie, J. D., Eur. J. Sol. St. and Inorg. Chem., in press (1992).Google Scholar
[17] Gomez, F. A., Johnson, S. E., Hawthorne, M. F., J. Am. Chem. Soc. 113, 5915 (1991).CrossRefGoogle Scholar
[18] Gomez, F. A. and Hawthorne, M. F., J. Org. Chem. 57, 1384 (1992).Google Scholar
[19] Johnson, S. E. and Hawthorne, M. F., unpublished results.Google Scholar
[20] Paxson, T. E., Callahan, K. P., Hawthorne, M. F., Inorg. Chem. 12, 708 (1973).CrossRefGoogle Scholar
[21] See ref. 19.Google Scholar
[22] Jamet, J., Spann, J. R., Rice, R. W., Lewis, D., Coblenz, W. S., Am. Ceram. Eng. Sci. Proc. 5, 677 (1984).Google Scholar
[23] Wood, C., in Boron Rich Solids, edited by Edmin, D., Aselage, T., Beckel, C. L., Howard, I. A., Wood, C. (Amer. Inst, of Physics, New York, 1986), pp. 362–372.Google Scholar