Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-29T07:40:53.187Z Has data issue: false hasContentIssue false
  • English
  • Français

Molecular Recognition on Acoustic Wave Devices: Modified Zeolite-Silica Thin Films With Tailored Adsorption Properties

Published online by Cambridge University Press:  25 February 2011

Yongan Yan ,
Thomas Bein ,
Kelly D. Brown ,
Ray Forrister  and
C. Jeffrey Brinker
Yongan Yan
Affiliation:
Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
Thomas Bein
Affiliation:
Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
Kelly D. Brown
Affiliation:
Department of Chemistry, University of New Mexico, Albuquerque, NM 87131, USA
Ray Forrister
Affiliation:
Department of Chemistry, University of New Mexico, Albuquerque, NM 87131, USA
C. Jeffrey Brinker
Affiliation:
Sandia National Laboratories, P. O. Box 5800, Albuquerque, NM 87185, USA
Get access

Abstract

Microporous thin films composed either of zeolite crystals embedded in sol-gel derived glass or of a molecular coupling layer, zeolite crystals and a porous silica overlayer, were formed on the gold electrodes of Quartz Crystal Microbalances (QCM). The microporosity of the thin films was characterized by in situ nitrogen and vapor sorption isotherms. Both preparation methods result in thin films with substantial microporosity. Selective adsorption based on molecular size exclusion from the microporous films could be achieved.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 271: Symposium N – Better Ceramics Through Chemistry V , 1992 , 435
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.)

References

REFERENCES

1 For recent reviews see: (a) Janata, J., Anal. Chem. 62, 33r (1990).Google Scholar
(b) Hughes, R. C., Ricco, A. J., Butler, M. A. and Martin, S. J., Science 254, 75 (1991).Google Scholar
2 (a) Bein, T., Brown, K., Frye, G. C. and Brinker, C. J., U. S. Patent Application 07/580,373, allowed on Jan. 23, 1992.Google Scholar
(b) Bein, T., Brown, K., Frye, G. C. and Brinker, C. J., J. Am. Chem. Soc., 111, 7640 (1989).Google Scholar
3 Bein, T., Brown, K. and Brinker, C. J., Stud. Surf. Sci. Catal. 49, Jacobs, P. A., and Van Santen, R. A., Eds.; (Elsevier, Amsterdam, 1989), p. 887.Google Scholar
4 Yan, Y. and Bein, T., J. Phys. Chem., in press.Google Scholar
5 Δf= -2f0 2ΔmA-1(ρqμq)-1/2, where Δf is the frequency shift, f0 the parent frequency of the QCM, Δm the mass change in g, A the piezoelectrically active area in cm2, ρq the density (2.648 g cm-3) and μq the shear modulus (2.947 × 1O11 dynes cm-2) for AT-cut quartz. see: Sauerbrey, G., Z. Physik 155, 206 (1959).Google Scholar
6 Brinker, C. J. and Scherer, G. W., Sol-Gel Science. (Academic Press, San Diego, 1990), p. 110.Google Scholar
7 (a) Flanigen, E. M., Bennett, J. M., Grose, R. W., Cinen, J. P., Patton, R. L., Kirchner, R. M. and Smith, J. V., Nature 271, 512 (1978).Google Scholar
(b) Meier, W. M. and Olson, D. H., Atlas of Zeolite Structure Types, 2nd Edition, (Butterworths, 1987).Google Scholar
8 Bein, T. and Yan, Y., U.S. Patent in preparation.Google Scholar