Documentation scienceplus.abes.fr version Bêta

À propos de : Structure, Wrinkling, and Reversibility of Langmuir Monolayers of Gold Nanoparticles        

AttributsValeurs
type
Is Part Of
Subject
Title
  • Structure, Wrinkling, and Reversibility of Langmuir Monolayers of Gold Nanoparticles
has manifestation of work
related by
Author
Abstract
  • The assembly of nanoparticles into large, two-dimensional structures provides a route for the exploration ofcollective phenomena among mesoscopic building blocks. We characterize the structure of Langmuirmonolayers of dodecanethiol-ligated gold nanoparticles with in situ optical microscopy and X-ray scattering.The interparticle spacing increases with thiol concentration and does not depend on surface pressure. Thecorrelation lengths of the Langmuir monolayer crystalline domains are on the order of five to six particlediameters. Further compression of the monolayers causes wrinkling; however, we find that wrinkled monolayerswith excess thiol can relax to an unwrinkled state following a reduction of surface pressure. A theoreticalmodel based on van der Waals attraction and tunable steric repulsion is adopted to explain this reversibility.
article type
is part of this journal



Alternative Linked Data Documents: ODE     Content Formats:       RDF       ODATA       Microdata