TY - JOUR
T1 - Yolk/Shell Assembly of Gold Nanoparticles by Size Segregation in Solution
AU - Wei, Jinjian
AU - Niikura, Kenichi
AU - Higuchi, Takeshi
AU - Kimura, Takashi
AU - Mitomo, Hideyuki
AU - Jinnai, Hiroshi
AU - Joti, Yasumasa
AU - Bessho, Yoshitaka
AU - Nishino, Yoshinori
AU - Matsuo, Yasutaka
AU - Ijiro, Kuniharu
N1 - Publisher Copyright:
© 2016 American Chemical Society.
Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2016/3/16
Y1 - 2016/3/16
N2 - We demonstrate that binary mixtures of small and large gold nanoparticles (GNPs) (5/15, 5/30, 10/30, and 15/30 nm in diameter) in the presence of a glucose-terminated fluorinated oligo(ethylene glycol) ligand can spontaneously form size-segregated assemblies. The outermost layer of the assembly is composed of a single layer of small-sized GNPs, while the larger-sized GNPs are located in the interior, forming what is referred to as a yolk/shell assembly. Time course study reveals that small and large GNPs aggregate together, and these kinetically trapped aggregations were transformed into a size-segregated structure by repeating fusions. A yolk/shell structure was directly visualized in solution by X-ray laser diffraction imaging, indicating that the structure was truly formed in solution, but not through a drying process.
AB - We demonstrate that binary mixtures of small and large gold nanoparticles (GNPs) (5/15, 5/30, 10/30, and 15/30 nm in diameter) in the presence of a glucose-terminated fluorinated oligo(ethylene glycol) ligand can spontaneously form size-segregated assemblies. The outermost layer of the assembly is composed of a single layer of small-sized GNPs, while the larger-sized GNPs are located in the interior, forming what is referred to as a yolk/shell assembly. Time course study reveals that small and large GNPs aggregate together, and these kinetically trapped aggregations were transformed into a size-segregated structure by repeating fusions. A yolk/shell structure was directly visualized in solution by X-ray laser diffraction imaging, indicating that the structure was truly formed in solution, but not through a drying process.
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U2 - 10.1021/jacs.5b12456
DO - 10.1021/jacs.5b12456
M3 - Article
AN - SCOPUS:84962489362
VL - 138
SP - 3274
EP - 3277
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 10
ER -