Impact of concentration and capping ligand length on the organization of metal nanoparticles in Langmuir-Blodgett surface micelles and nanostrands
2016
Lemineur, Jean-François | Saci, Nassima | Ritcey, Anna M.
Ultra-thin composite films have been prepared by the dispersion and organization of plasmonic nanoparticles in block copolymers. Polystyrene-b-polyvinylpyridine can be spread at the air-water interface to form periodic nano-domains with either a micellar or a lamellar morphology, providing an ordered template for the controlled assembly of metal nanoparticles. The exact spatial distribution of gold or silver nanoparticles of a fixed size (6nm) is effectively controlled by the length of chemisorbed alkanethiol ligands. With this approach three types of nanoparticle assemblies can be obtained: clusters, rings and lines.
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