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Molecular Probes of Physical and Chemical Properties of Sol-Gel Films

Published online by Cambridge University Press:  10 February 2011

J. I. Zink ,
B. Dunn ,
B. Dave  and
F. Akbarian
J. I. Zink
Affiliation:
Dept. of Chemistry, University of California, Los Angeles, CA 90095, [email protected]
B. Dunn
Affiliation:
Dept. of Materials Science and Engineering, University of California, Los Angeles, CA 90095
B. Dave
Affiliation:
Dept. of Materials Science and Engineering, University of California, Los Angeles, CA 90095
F. Akbarian
Affiliation:
Dept. of Chemistry, University of California, Los Angeles, CA 90095, [email protected]
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Abstract

Two molecular probes, pyranine (8-hydroxy 1,3,6-trisulfonated pyrene) and cytochrome c, are used to probe two different aspects of sol-gel SiO2 films. Pyranine is used as an in-situ fluorescence probe to monitor the chemical evolution during sol-gel thin film deposition of silica by the dip coating process. The sensitivity of pyranine luminescence to protonation/deprotonation effects is used to quantify changes in the water/alcohol ratio in real time as the substrate is withdrawn from the sol reservoir. Correlation of the luminescence results with the interference pattern of the depositing film allows the solvent composition to be mapped as a function of film thickness. Cytochrome c is used as a probe of the rotational mobility of a large molecule in the pores of sol-gel SiO2 films. A.C. dipolar relaxation measurements show that the biomolecule remains mobile but experiences a ten-fold increase in local microviscosity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 435: Symposium V – Better Ceramics Through Chemistry VII , 1996 , 187
Copyright
Copyright © Materials Research Society 1996

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References

1. Hench, L.L. and West, J. K., Chem. Rev. 90, 33–72 (1990).Google Scholar
2. Brinker, C.J., Scherer, G., Sol-Gel Science: The Physics and Chemistry of Sol-Gel Processing (Academic Press, San Diego, 1990).Google Scholar
3. Klein, L.C., editor, Sol-Gel Technology (Noyes Publications, Park Ridge, NJ, 1988).Google Scholar
4. Uhlmann, D.R., Rajendran, G.P., in Ultrastructure Processing of Advanced Ceramics, edited by Mackenzie, J.D. and Ulrich, D.R. (Wiley, New York, 1988), p. 241.Google Scholar
5. Brinker, C.J., Hurd, A.J., Frye, G.C., Schunk, P.R., Ashley, C.S., J. Ceram. Soc. Japan 99, 862 (1991).Google Scholar
6. Hurd, A.J., Brinker, C.J., Mat. Res. Soc. Symp. 121, 731 (1988).Google Scholar
7. Clement, N.R., Gould, M., Biochemistry 20, 1534 (1981).Google Scholar
8. Wolfbeis, O.S., Ftrlinger, E., Kroneis, H., Marsoner, H., Fres. Z. Anal. Chem. 314, 119 (1983).Google Scholar
9. Kaufman, V.R., Avnir, D., Pines-Rojanski, D., Huppert, D., J. Non-Cryst. Solids 99, 379 (1988).Google Scholar
10. Pouxviel, J.C., Dunn, B. and Zink, J.I., J. Phys. Chem. 93, 2134 (1989).Google Scholar
11. Hurd, A.J., Brinker, C.J., Mat. Res. Soc. Symp. 180, 575 (1990).Google Scholar
12. Schunk, P.R., Hurd, A.J., Brinker, C.J., in Liquid Film Coating. Scientific Principles and Their Technological Implications, edited by Schweizer, P.M. and Kistler, S.F. (Chapman and Hall, New York), in press.Google Scholar
13. Drake, J. M., Klafter, J., Physics Today 46 (1990).Google Scholar
14. Salemme, F. R., Ann. Rev. Biochem. 46, 299 (1977).Google Scholar
15. Dave, B. C., Soyez, H., Miller, J. M., Dunn, B., Valentine, J. S., Zink, J. I., Chem. Mater. 7, 1431 (1995).Google Scholar
16. Cartling, B., Biological Applications of Raman Spectroscopy, Vol 3. (John Wiley, New York, 1988), pp. 217–248.Google Scholar
17. Pethig, R., Dielectric and Electronic Properties of Biological Materials (John Wiley, Chichester 1979).Google Scholar
18. Macdonald, J.R., Impedance Spectroscopy (John Wiley, New York, 1987).Google Scholar
19. Grant, E.H., Sheppard, R.J., South, G.P., Dielectric Behaviour of Biological Molecules in Solution (Oxford University Press, Oxford, 1978).Google Scholar
20. Koppenol, W. H., Margoliash, E., J. Biol. Chem. 257, 4426 (1982).Google Scholar