Hostname: page-component-745bb68f8f-v2bm5 Total loading time: 0 Render date: 2025-01-27T03:16:01.690Z Has data issue: false hasContentIssue false
  • English
  • Français

Substrate Based “Bricks-and-Mortar” Self-Assembly of Spherical Nanoparticle Aggregates

Published online by Cambridge University Press:  21 March 2011

Andrew K. Boal ,
Faysal Ilhan  and
Vincent M. Rotello
Andrew K. Boal
Affiliation:
Department of Chemistry, University of Massachusetts, Amherst Amherst, MA. 01003, U. S. A.
Faysal Ilhan
Affiliation:
Department of Chemistry, University of Massachusetts, Amherst Amherst, MA. 01003, U. S. A.
Vincent M. Rotello
Affiliation:
Department of Chemistry, University of Massachusetts, Amherst Amherst, MA. 01003, U. S. A.
Get access

Abstract

Transmission Electron Microscope (TEM) sample girds were coated with recognition element functionalized polymer 2 and exposed to solutions of a Mixed Monolayer Protected Gold Cluster (MMPC) functionalized with a complimentarily recognition element. Interactions between the polymer and MMPC bound recognition elements provide a driving force for the formation of nanoparticle aggregates. Characterization of the resulting structures by TEM revealed that anisotropic growth of structures in the sub-micrometer size regime rapidly occurred. This process was shown to be the result of the specific hydrogen-bonding interactions between the two components. Casting films of polymer 2 from solutions of decreasing concentration achieved control over the process. This lead to the increased formation of regular, circular structuresand a decrease in random nanoparticle adsorption by the film. Analysis of the size of the circular structures revealed that a maximum diameter of approximately 1150 nm was achieved after 30 minutes exposure to MMPC 1 solutions. This size was independent of the concentration of polymer 2 solutions used to cast films.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 676: Symposium Y – Synthesis, Functional Properties and Applications of Nanostructures , 2001 , Y8.5
Copyright
Copyright © Materials Research Society 2001

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. Shimomura, M., Sawadaishi, T., Curr. Opin. Colloid In. 6, 11–12 (2001).Google Scholar
2. Nakanishi, T., Ohtani, B., Uosaki, K., J. Phys. Chem. B. 120, 1571–1577 (1998).Google Scholar
3. Decher, G., Science. 277, 1232–1237 (1997).Google Scholar
4. Boal, A. K., Ilhan, F., DeRouchey, J. E., Thurn-Albrecht, T., Russell, T. P., Rotello, V. M., Nature 404, 746–748 (2000).Google Scholar
5. (a) Brust, M., Walker, M., Bethell, D., Schiffrin, D. J., Whyman, R. J., Chem. Comm. 801–802 (1994).Google Scholar
(b) Ingram, R. S., Hostetler, M. J., Murray, R. W., J. Am. Chem. Soc. 119, 9175–9178 (1997).Google Scholar
6. Boal, A. K., Rotello, V. M., J. Am. Chem. Soc., 122, 734–735 (2000).Google Scholar
7. Deans, R., Ilhan, F., Rotello, V. M., Macromolecules 32, 4956–4960 (1999).Google Scholar
8. Polymer 2 is insoulable in 3:1 toluene: CH2Cl2, and therefore will not wash off the TEM grid.Google Scholar