Assembly of polystyrene-coated gold nanoparticles at the air–water interface

[Display omitted] Gold nanoparticles (NPs) coated with thiol-terminated polystyrene chains of varying molar mass were added to polystyrene-b-polymethylmethacrylate (PS-b-PMMA) block copolymer monolayers at the air–water interface. Composite films were transferred to solid substrates by the Langmuir–...

Full description

Saved in:
Bibliographic Details
Published in:Journal of colloid and interface science 2015-04, Vol.443, p.131-136
Main Authors: Lamarre, Samuel S., Yockell-Lelièvre, Hélène, Ritcey, Anna M.
Format: Article
Language:English
Subjects:
Aggregates
Block copolymers
Copolymers
Deposition
Formations
Gold
Gold nanoparticles
Langmuir–Blodgett films
Ligands
Monolayers
Nanoparticles
Self-assembly
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] Gold nanoparticles (NPs) coated with thiol-terminated polystyrene chains of varying molar mass were added to polystyrene-b-polymethylmethacrylate (PS-b-PMMA) block copolymer monolayers at the air–water interface. Composite films were transferred to solid substrates by the Langmuir–Blodgett technique. For most of the investigated systems, TEM micrographs and AFM images reveal the formation of 2D island-like aggregates of particles organized on a close-packed hexagonal lattice. This characteristic aggregate formation is lost when PS ligands are within the same length regime as the PS block from the copolymer. The results are compared with those obtained for analogous systems containing no copolymer where NPs are deposited on either a bare water surface or bare glass. Interparticle distance between NPs is found to depend on the surface on which they are deposited, the presence or not of the copolymer monolayer, and ligand length.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2014.12.009