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Synthesis of Periodic Mesoporous Silica Thin Films

Published online by Cambridge University Press:  10 February 2011

M. T. Anderson ,
J. E. Martin ,
J. G. Odinek  and
P. Newcomer
M. T. Anderson
Affiliation:
Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185
J. E. Martin
Affiliation:
Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185
J. G. Odinek
Affiliation:
Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185
P. Newcomer
Affiliation:
Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185
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Abstract

We have synthesized periodic mesoporous silica thin films (PMSTF) from homogeneous solutions. To synthesize the films a thin layer of a pH = 7 micellar coating solution that contains TMOS is dip- or spin-coated onto silicon wafers, borosilicate glass, or quartz substrates. Ammonia gas is diffused into the solution and causes rapid hydrolysis and condensation of the TMOS and the formation of periodic mesoporous thin films within ∼10 seconds. The combination of homogeneous solutions and rapid product formation maximizes the concentration of desired product and provides a controlled, predictable microstructure. The films have been made continuous and crack-free by optimizing initial silica concentration and film thickness.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 431: Symposium P – Microporous and Macroporous Materials , 1996 , 217
Copyright
Copyright © Materials Research Society 1996

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