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Synthesis and Plasmonic Properties of Core–Shell Bimetallic Silver–Gold Nanoprisms Obtained through an Organometallic Route
Author(s) -
Crespo Julian,
Ibarra Alfonso,
LópezdeLuzuriaga José M.,
Monge Miguel,
Olmos M. Elena
Publication year - 2014
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201400023
Subject(s) - chemistry , tetrahydrothiophene , bimetallic strip , nanostructure , nanoparticle , transmission electron microscopy , plasmon , shell (structure) , iron pentacarbonyl , nanotechnology , scanning transmission electron microscopy , chemical engineering , metal , inorganic chemistry , materials science , stereochemistry , organic chemistry , optoelectronics , composite material , engineering
Ag–Au core–shell nanoprisms were obtained through the deposition of Au atoms over hexadecylamine‐stabilized Ag nanoparticles through the mild decomposition of an organometallic Au I precursor. The effects of the amount of precursor [Au(C 6 F 5 )(tht)] (tht = tetrahydrothiophene) added and the reaction time on the size, shape, and composition of the core–shell Ag–Au nanostructures obtained have been studied by TEM, high‐angle annular dark field/scanning transmission electron microscopy (HAADF‐STEM), EDS, UV/Vis, and 19 F NMR spectroscopic analysis. The anisotropic growth of the prismatic metallic shell and its composition has been controlled through the addition of different amounts of Au I precursor, thus leading to a delicate tuning of the plasmonic properties of these nanostructures.