Title
Steric hindrance induces crosslike self-assembly of gold nanodumbbells Steric hindrance induces crosslike self-assembly of gold nanodumbbells
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Washington ,
Subject
Physics
Chemistry
Engineering sciences. Technology
Source (journal)
Nano letters / American Chemical Society. - Washington
Volume/pages
12(2012) :8 , p. 4380-4384
ISSN
1530-6984
ISI
000307211000081
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
In the formation of colloidal molecules, directional interactions are crucial for controlling the spatial distribution of the building blocks. Anisotropic nanoparticles facilitate directional clustering via steric constraints imposed by each specific shape, thereby restricting assembly along certain directions. We show in this Letter that the combination of patchiness (attraction) and shape (steric hindrance) allows assembling gold nanodumbbell building blocks into crosslike dimers with well-controlled interparticle distance and relative orientation. Steric hindrance between interacting dumbbell-like particles opens up a new synthetic approach toward low-symmetry plasmonic clusters, which may significantly contribute to understand complex plasmonic phenomena.
E-info
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