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Title: Solvent mediated assembly of nanoparticles confined in mesoporous alumina

Abstract

The controlled self-assembly of thiol stabilized gold nanocrystals in a mediating solvent and confined within mesoporous alumina was probed in situ with small angle x-ray scattering. The evolution of the self-assembly process was controlled reversibly via regulated changes in the amount of solvent condensed from an undersaturated vapor. Analysis indicated that the nanoparticles self-assembled into cylindrical monolayers within the porous template. Nanoparticle nearest-neighbor separation within the monolayer increased and the ordering decreased with the controlled addition of solvent. The process was reversible with the removal of solvent. Isotropic clusters of nanoparticles were also observed to form temporarily during desorption of the liquid solvent and disappeared upon complete removal of liquid. Measurements of the absorption and desorption of the solvent showed strong hysteresis upon thermal cycling. In addition, the capillary filling transition for the solvent in the nanoparticle-doped pores was shifted to larger chemical potential, relative to the liquid/vapor coexistence, by a factor of 4 as compared to the expected value for the same system without nanoparticles.

Authors:
;  [1];  [1];  [2];  [1];  [2];  [3]; ;  [4]; ;  [5];  [6]
  1. Division of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States)
  2. (United States)
  3. Australian Synchrotron Research Program, Building 434, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  4. Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003 (United States)
  5. Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
  6. Center for Functional Nanomaterials, Brookhaven National Lab, Upton, New York 11973 (United States)
Publication Date:
OSTI Identifier:
20788031
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 73; Journal Issue: 12; Other Information: DOI: 10.1103/PhysRevB.73.125412; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; ADSORPTION; ALUMINIUM OXIDES; CAPILLARIES; DESORPTION; DOPED MATERIALS; GOLD; LIQUIDS; NANOSTRUCTURES; PARTICLES; POROUS MATERIALS; POTENTIALS; SMALL ANGLE SCATTERING; SOLVENTS; THIOLS; VAPORS; X-RAY DIFFRACTION

Citation Formats

Alvine, Kyle J., Pontoni, Diego, Shpyrko, Oleg G., Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, Pershan, Peter S., Department of Physics, Harvard University, Cambridge, Massachusetts 02138, Cookson, David J., Shin, Kyusoon, Russell, Thomas P., Brunnbauer, Markus, Stellacci, Francesco, and Gang, Oleg. Solvent mediated assembly of nanoparticles confined in mesoporous alumina. United States: N. p., 2006. Web. doi:10.1103/PHYSREVB.73.1.
Alvine, Kyle J., Pontoni, Diego, Shpyrko, Oleg G., Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, Pershan, Peter S., Department of Physics, Harvard University, Cambridge, Massachusetts 02138, Cookson, David J., Shin, Kyusoon, Russell, Thomas P., Brunnbauer, Markus, Stellacci, Francesco, & Gang, Oleg. Solvent mediated assembly of nanoparticles confined in mesoporous alumina. United States. doi:10.1103/PHYSREVB.73.1.
Alvine, Kyle J., Pontoni, Diego, Shpyrko, Oleg G., Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, Pershan, Peter S., Department of Physics, Harvard University, Cambridge, Massachusetts 02138, Cookson, David J., Shin, Kyusoon, Russell, Thomas P., Brunnbauer, Markus, Stellacci, Francesco, and Gang, Oleg. Wed . "Solvent mediated assembly of nanoparticles confined in mesoporous alumina". United States. doi:10.1103/PHYSREVB.73.1.
@article{osti_20788031,
title = {Solvent mediated assembly of nanoparticles confined in mesoporous alumina},
author = {Alvine, Kyle J. and Pontoni, Diego and Shpyrko, Oleg G. and Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439 and Pershan, Peter S. and Department of Physics, Harvard University, Cambridge, Massachusetts 02138 and Cookson, David J. and Shin, Kyusoon and Russell, Thomas P. and Brunnbauer, Markus and Stellacci, Francesco and Gang, Oleg},
abstractNote = {The controlled self-assembly of thiol stabilized gold nanocrystals in a mediating solvent and confined within mesoporous alumina was probed in situ with small angle x-ray scattering. The evolution of the self-assembly process was controlled reversibly via regulated changes in the amount of solvent condensed from an undersaturated vapor. Analysis indicated that the nanoparticles self-assembled into cylindrical monolayers within the porous template. Nanoparticle nearest-neighbor separation within the monolayer increased and the ordering decreased with the controlled addition of solvent. The process was reversible with the removal of solvent. Isotropic clusters of nanoparticles were also observed to form temporarily during desorption of the liquid solvent and disappeared upon complete removal of liquid. Measurements of the absorption and desorption of the solvent showed strong hysteresis upon thermal cycling. In addition, the capillary filling transition for the solvent in the nanoparticle-doped pores was shifted to larger chemical potential, relative to the liquid/vapor coexistence, by a factor of 4 as compared to the expected value for the same system without nanoparticles.},
doi = {10.1103/PHYSREVB.73.1},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 12,
volume = 73,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}