Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Site Tools

  • AAAS
  • Subscribe
  • Feedback

Site Search

Search Advanced

Science 18 December 1998:
Vol. 282. no. 5397, pp. 2244 - 2246
DOI: 10.1126/science.282.5397.2244
Prev | Table of Contents | Next

Reports

Hierarchically Ordered Oxides

Peidong Yang, Tao Deng, Dongyuan Zhao, Pingyun Feng, David Pine, Bradley F. Chmelka, George M. Whitesides, Galen D. Stucky *

Porous silica, niobia, and titania with three-dimensional structures patterned over multiple length scales were prepared by combining micromolding, polystyrene sphere templating, and cooperative assembly of inorganic sol-gel species with amphiphilic triblock copolymers. The resulting materials show hierarchical ordering over several discrete and tunable length scales ranging from 10 nanometers to several micrometers. The respective ordered structures can be independently modified by choosing different mold patterns, latex spheres, and block copolymers. The examples presented demonstrate the compositional and structural diversities that are possible with this simple approach.

P. Yang, D. Zhao, G. D. Stucky, Department of Chemistry, University of California, Santa Barbara, CA 93106, USA. T. Deng and G. M. Whitesides, Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA. P. Feng, D. Pine, B. F. Chmelka, Department of Chemical Engineering, University of California, Santa Barbara, CA 93106, USA.
*   To whom correspondence should be addressed.

Read the Full Text


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Silica nanocasting of lyotropic surfactant phases and organized organic matter: material science or an analytical tool?.
M. Antonietti (2006)
Phil Trans R Soc A 364, 2817-2840
   Abstract »    Full Text »    PDF »
Cell-directed assembly of lipid-silica nanostructures providing extended cell viability..
H. K. Baca, C. Ashley, E. Carnes, D. Lopez, J. Flemming, D. Dunphy, S. Singh, Z. Chen, N. Liu, H. Fan, et al. (2006)
Science 313, 337-341
   Abstract »    Full Text »    PDF »
Optically Defined Multifunctional Patterning of Photosensitive Thin-Film Silica Mesophases.
D. A. Doshi, N. K. Huesing, M. Lu, H. Fan, Y. Lu, K. Simmons-Potter, B. G. Potter Jr., A. J. Hurd, and C. J. Brinker (2000)
Science 290, 107-111
   Abstract »    Full Text »
A Class of Microstructured Particles Through Colloidal Crystallization.
O. D. Velev, A. M. Lenhoff, and E. W. Kaler (2000)
Science 287, 2240-2243
   Abstract »    Full Text »
Mirrorless Lasing from Mesostructured Waveguides Patterned by Soft Lithography.
P. Yang, I. S. A. G. Wirnsberger, H. C. Huang, S. R. Cordero, M. D. McGehee, B. Scott, T. Deng, G. M. Whitesides, B. F. Chmelka, S. K. Buratto, et al. (2000)
Science 287, 465-467
   Abstract »    Full Text »
Surfactant-Mediated Two-Dimensional Crystallization of Colloidal Crystals.
L. Ramos, T. C. Lubensky, N. Dan, P. Nelson, and D. A. Weitz (1999)
Science 286, 2325-2328
   Abstract »    Full Text »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)