Ligand-free synthesis of gold nanoparticles incorporated within oriented cylindrical block copolymer films : towards optical metamaterials - Archive ouverte HAL Access content directly
Conference Papers Year :

Ligand-free synthesis of gold nanoparticles incorporated within oriented cylindrical block copolymer films : towards optical metamaterials

(1, 2) , (2) , (2) , (2) , (1) , (3) , (4) , (3) , (2)
1
2
3
4

Abstract

We report a method to incorporate non-functionalized gold nanoparticles (AuNPs) in oriented cylindrical phases of poly(styrene)-b-poly(vinylpyridine) (PS-b-PVP) block copolymers, perpendicular to a substrate. The combination of AFM, TEM, GISAXS and spectroscopy allows complete characterization of the nanocomposites. AuNPs are produced by the ultra-sound reduction of a gold salt in the copolymer solution, prior to the deposition of the films by spin-coating. The AuNPs are found to be located within the PVP cylinders exclusively. The seeded-growth of these pre-formed AuNPs by a further ultra-sound treatment produced plasmonic AuNPs (up to d =10 nm). For perpendicular cylinders, the PVP domains are swollen without any change in their orientation. Ellipsometric optical properties of these plasmonic AuNPs embeded into oriented cylinders show a definite extinction in reflectivity at a precise energy and incidence angle.
Fichier principal
Vignette du fichier
Guenoun_Meta2019.pdf (483.1 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

cea-02328369 , version 1 (23-10-2019)

Identifiers

  • HAL Id : cea-02328369 , version 1

Cite

Florian Aubrit, Fabienne Testard, Aurélie Paquirissamy, Frédéric Gobeaux, Xuan Wang, et al.. Ligand-free synthesis of gold nanoparticles incorporated within oriented cylindrical block copolymer films : towards optical metamaterials. META 2019. The 10th International Conference on Metamaterials, Photonic Crystals and Plasmonics, Jul 2019, Lisbon, Portugal. ⟨cea-02328369⟩
64 View
19 Download

Share

Gmail Facebook Twitter LinkedIn More