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Reference: L. Giomi, M. J. Bowick, X. Ma et al., (2011). Molecular Tilt on Monolayer-Protected Nanoparticles.Citable link to this page:

 

Molecular Tilt on Monolayer-Protected Nanoparticles

Abstract: The structure of the tilted phase of monolayer-protected nanoparticles is investigated by means of a simple Ginzburg-Landau model. The theory contains two dimensionless parameters representing the preferential tilt angle and the ratio (epsilon) between the energy cost due to spatial variations in the tilt of the coating molecules and that of the van der Waals interactions which favors uniform tilt. We analyze the model for both spherical and octahedral particles. On spherical particles, we find a transition from a tilted phase, at small (epsilon), to a phase where the molecules spontaneously align along the surface normal and tilt disappears. Octahedral particles have an additional phase at small characterized by the presence of six topological defects. These defective configurations provide preferred sites for the chemical functionalization of monolayer-protected nanoparticles via place-exchange reactions and their consequent linking to form molecules andbulk materials.

Bibliographic Details

Issue Date: 2011Identifiers

Urn: uuid:fc991ebd-9af6-4c97-a5b4-5b1990aaa7da Item Description

Type: Article;

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Author: L. Giomi - - - M. J. Bowick - - - X. Ma - - - A. Majumdar - - - - Bibliographic Details Issue Date: 2011 - Identifiers Urn: uuid:

Source: https://ora.ox.ac.uk/objects/uuid:fc991ebd-9af6-4c97-a5b4-5b1990aaa7da



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