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Colloidal Alchemy: Conversion of Polystyrene Nanoclusters into Gold
Author(s) -
Chomette Cyril,
TréguerDelapierre Mona,
Schade Nicholas B.,
Manoharan Vinothan N.,
Lambert Olivier,
Taveau JeanChristophe,
Ravaine Serge,
Duguet Etienne
Publication year - 2017
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201600315
Subject(s) - nanoclusters , polystyrene , materials science , nanotechnology , transmission electron microscopy , isotropy , electron tomography , plasmon , etching (microfabrication) , colloidal gold , adsorption , chemical engineering , nanoparticle , scanning transmission electron microscopy , optoelectronics , composite material , optics , chemistry , polymer , layer (electronics) , physics , engineering
Isotropic plasmonic clusters consisting of a controlled number of gold satellites around a silica core are fabricated from silica/polystyrene tetrapod, hexapod, and dodecapod templates. The synthetic pathway includes stages of site‐specific seed adsorption, seed‐mediated growth, and iterative etching/regrowth to reshape the satellites into spheroids. Transmission electron microscopy and electron tomography provide evidence of the symmetry of the clusters. This work paves the way for a comprehensive study of their optical properties.