Single step synthesis and organization of gold colloids assisted by copolymer templates.
We report here an original single-step process for the synthesis and self-organization of gold colloids by simply incorporating gold salts into a solution prepared using polystyrene (PS)-polymethylmethacrylate copolymer and thiolated PS with propylene glycol methyl ether acetate as a solvent. The spin-coating and annealing of this solution then allows the formation of PS domains. Depending on the polymer concentration of the as-prepared solution, there can be either one or several gold nanoparticles (Au NPs) per PS domain. For high concentrations of Au NPs in PS domains, the coupling between plasmonic NPs leads to the observation of a second peak in the optical extinction spectrum. Such a collective effect could be relevant for the development of optical strain sensors in the near future.
Aurélien
A
Sarrazin
Arthur
A
Gontier
Alexandre
A
Plaud
Jérémie
J
Béal
Hélène
H
Yockell-Lelièvre
Jean-Louis
JL
Bijeon
Jérôme
J
Plain
Pierre-Michel
PM
Adam
Thomas
T
Maurer
D017979:Gold Colloid / Q000138:chemical synthesis*; D053768:Metal Nanoparticles / Q000648:ultrastructure; D008689:Methacrylates / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry*
D017979:Gold Colloid; D008689:Methacrylates; D011137:Polystyrenes; C522509:polystyrene-block-poly(methyl methacrylate)