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Phase Separation on Mixed‐Monolayer‐Protected Metal Nanoparticles: A Study by Infrared Spectroscopy and Scanning Tunneling Microscopy
Author(s) -
Centrone Andrea,
Hu Ying,
Jackson Alicia M.,
Zerbi Giuseppe,
Stellacci Francesco
Publication year - 2007
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.200600736
Subject(s) - monolayer , nanoparticle , scanning tunneling microscope , infrared spectroscopy , spectroscopy , phase (matter) , infrared , nanotechnology , materials science , quantum tunnelling , chemistry , analytical chemistry (journal) , optics , optoelectronics , organic chemistry , physics , quantum mechanics
On the surface : Mixed monolayers, which on flat surfaces phase‐separate into randomly shaped domains, spontaneously form ordered rings of alternating composition when assembled around the core of a monolayer‐protected gold nanoparticle (see figure). It is shown that it is possible to use infrared spectroscopy, a simple and common technique, to prove the existence of these phase‐separated domains on nanoparticles.