Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-29T10:26:04.121Z Has data issue: false hasContentIssue false
  • English
  • Français

Porous Silicon Used as an Initiator in Polymerization Reactions

Published online by Cambridge University Press:  28 February 2011

Julie L. Heinrich ,
Alice Lee  and
Michael J. Sailor
Julie L. Heinrich
Affiliation:
University of California at San Diego, Department of Chemistry, 9500 Gilman Dr, La Jolla, CA 92093-0358
Alice Lee
Affiliation:
University of California at San Diego, Department of Chemistry, 9500 Gilman Dr, La Jolla, CA 92093-0358
Michael J. Sailor
Affiliation:
University of California at San Diego, Department of Chemistry, 9500 Gilman Dr, La Jolla, CA 92093-0358
Get access

Abstract

Porous silicon is investigated as an initiator for radical polymerization reactions. Surface radicals and photogenerated e−/h+ pairs in porous silicon can be used to initiate polymerization reactions. Porous silicon wafers were placed in ethanolic solutions of methyl methacrylate, N-vinylcarbazole, acrylonitrile, or styrene and either left in the dark or excited by light. Methyl methacrylate polymerized in the absence of light, presumably via silicon-based radical initiator sites at the porous silicon surface. The N-vinylcarbazole polymerized to a small extent in the dark, and to a much greater extent during white light irradiation of the porous silicon surface. Photopolymerization is thought to occur via excited state hole transfer from the porous silicon to the N-vinylcarbazole monomer. Very little to no polymerization of acrylonitrile or styrene could be detected either in the dark or under illumination.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 358: Symposium F – Microcrystalline and Nanocrystalline Semiconductors , 1994 , 605
Copyright
Copyright © Materials Research Society 1995

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.)

References

REFERENCES

1 Canham, L. T. Phys. World 1992, March, 41–44.Google Scholar
2 Lauerhaas, J. M.; Credo, G. M.; Heinrich, J. L.; Sailor, M. J. J. Am. Chem. Soc. 1992, 114, 1911–1912.Google Scholar
3 Chun, J. K. M.; Bocarsly, A. B.; Cottrell, T. R.; Benziger, J. B.; Yee, J. C. J. Am. Chem. Soc. 1993, 115, 3024–3025.Google Scholar
4 Fox, M. A.; Britt, P. NewJ. Chem. 1992, 16, 113–120.Google Scholar
5 Ikuichiro, I.; Fan, F.-R. F.; Bard, A. J. Journal of Physical Chemistry 1981, 85, 218–223.Google Scholar
6 Hoffman, A. J.; Mills, G.; Yee, H.; Hoffmann, M. R. Journal of Physical Chemistry 1992, 96, 5546–5552.Google Scholar
7 Hoffman, A. J.; Yee, H.; Mills, G.; Hoffmann, M. R. Journal of Physical Chemistry 1992, 96, 5540–5546.Google Scholar
8 Meyer, B. K.; Petrova-Koch, V.; Muschik, Y.; Linke, H.; Omling, P.; Lehmann, V. Applied Physics Letters 1993, 63,1930–1932.Google Scholar