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Direct Visualization of Symmetry Breaking During Janus Nanoparticle Formation
Author(s) -
Loget Gabriel,
Lee Tung C.,
Taylor Richard W.,
Mahajan Sumeet,
Nicoletti Olivia,
Jones Samuel T.,
Coulston Richard J.,
Lapeyre Véronique,
Garrigue Patrick,
Midgley Paul A.,
Scherman Oren A.,
Baumberg Jeremy J.,
Kuhn Alexander
Publication year - 2012
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201200546
Subject(s) - nanoparticle , transmission electron microscopy , janus , materials science , janus particles , precipitation , electron microscope , silver nanoparticle , nanotechnology , chemical engineering , chemical physics , chemistry , optics , physics , engineering , meteorology
The straight‐forward synthesis of Janus nanoparticles composed of Ag and AgBr is reported. For their formation, cucurbit[n]uril (CB)‐stabilized AgBr nanoparticles are first generated in water by precipitation. Subsequent irradiation with an electron beam transforms a fraction of each AgBr nanoparticle into Ag 0 , leading to well‐defined Janus particles, stabilized by the binding of CB to the surface of both AgBr and Ag 0 . With the silver ion reduction being triggered by the electron beam, the progress of the transformation can be directly monitored with a transmission electron microscope.