Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-28T19:27:21.271Z Has data issue: false hasContentIssue false
  • English
  • Français

Mesoscopic Silica Thin Films Via Template-Assisted Self-Assembly

Published online by Cambridge University Press:  02 July 2020

N. Yao ,
M. Trau ,
S. Manne ,
N. Nakagawa ,
T. Lee ,
I. Honma  and
I. A. Aksay
N. Yao
Affiliation:
Princeton Materials Institute, Princeton University, Princeton, New Jersey, 08540-5211
M. Trau
Affiliation:
Princeton Materials Institute, Princeton University, Princeton, New Jersey, 08540-5211 Department of Chemical Engineering, Princeton University, Princeton, New Jersey, , 08540-5211
S. Manne
Affiliation:
Princeton Materials Institute, Princeton University, Princeton, New Jersey, 08540-5211
N. Nakagawa
Affiliation:
Princeton Materials Institute, Princeton University, Princeton, New Jersey, 08540-5211 Department of Chemical Engineering, Princeton University, Princeton, New Jersey, , 08540-5211
T. Lee
Affiliation:
Princeton Materials Institute, Princeton University, Princeton, New Jersey, 08540-5211 Department of Chemical Engineering, Princeton University, Princeton, New Jersey, , 08540-5211
I. Honma
Affiliation:
Princeton Materials Institute, Princeton University, Princeton, New Jersey, 08540-5211 Department of Chemical Engineering, Princeton University, Princeton, New Jersey, , 08540-5211
I. A. Aksay
Affiliation:
Princeton Materials Institute, Princeton University, Princeton, New Jersey, 08540-5211 Department of Chemical Engineering, Princeton University, Princeton, New Jersey, , 08540-5211
Get access

Extract

Synthesis of mesoscopic silicates has stimulated considerable interest as a biomimetic approach to the fabrication of organic/inorganic nanocomposites. However, for future applications of these materials, controlled shapes and patterns, particularly as continuous thin films, rather than the microscopic particulates, need to be processed. Recently, we have described a synthesis scheme, using the supramolecular assemblies of surfactant molecules as a template for the condensation of inorganic species, to prepare silica mesoscopic thin films at a solid interface from a bulk solution. Here, we concentrate on the growth of such thin films and the effect of the template on the nanostructure formation.

We employed tetraethoxy silane (TEOS), dissolved in acidic solution, as a silicate source and cetyltrimethyl ammonium chloride (CTAC) as the templating surfactant. Typical molar ratio was 1 TEOS : 1.2 CTAC : 9.2 HC1 : 1000 H2O. Concentrations of TEOS and HCl in the mixture were approximately l/7th of those for typical particle synthesis scheme, in order to sufficiently slow down the rate of TEOS hydration such that homogeneous nucleation is effectively switched off.

Type
Nanocrystals and Nanocomposites: Novel Structures For Catalysis, Electronics, and Micromechanics
Information
Microscopy and Microanalysis , Volume 3 , Issue S2: Proceedings: Microscopy & Microanalysis '97, Microscopy Society of America 55th Annual Meeting, Microbeam Analysis Society 31st Annual Meeting, Histochemical Society 48th Annual Meeting, Cleveland, Ohio, August 10-14, 1997 , August 1997 , pp. 395 - 396
Copyright
Copyright © Microscopy Society of America 1997

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

Kresge, C.T., Leonowicz, M.E., Roth, W.J., Vartuli, J.C., and Beck, J.S., Nature 359(1992)710.10.1038/359710a0CrossRefGoogle Scholar
Aksay, I.A., Trau, M., Manne, S., Honma, I., Yao, N., Zhou, L., Fenter, P., Eisenberger, P.M., and Gruner, S.M., Science, 273(1996)892.10.1126/science.273.5277.892CrossRefGoogle Scholar
Lange, F.F., Science, 273(1996)903.10.1126/science.273.5277.903CrossRefGoogle Scholar
This work was supported by a grant from the U.S. Army Research Office (Grant DAAH04-95-1-0102) and made use of MRSEC Shared Facilities supported by the NSF under Award Number DMR-940032.Google Scholar