Centrifugal shape sorting and optical response of polyhedral gold nanoparticles

Yu Jin Shin; Emilie Ringe; Michelle L. Personick; M. Fernanda Cardinal; Chad A. Mirkin; Laurence D. Marks; Richard P. Van Duyne; Mark C. Hersam

doi:10.1002/adma.201301278

Centrifugal shape sorting and optical response of polyhedral gold nanoparticles

Yu Jin Shin, Emilie Ringe, Michelle L. Personick, M. Fernanda Cardinal, Chad A. Mirkin, Laurence D. Marks, Richard P. Van Duyne, Mark C. Hersam^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

A centrifugal route for separating small {110}-faceted gold nanostructures, namely rhombic dodecahedra (RD) and triangular bipyramids (BPs), which form simultaneously during synthesis and cannot be separated by means of conventional filtration methods, is presented. The centrifuged solution shows two distinct bands: i) RD and ii) BPs, as verified in the corresponding scanning electron microscopy images. The sorted BPs show a refractive index dependence 2.5 times that of the as-synthesized, unsorted mixture.

Original language	English (US)
Pages (from-to)	4023-4027
Number of pages	5
Journal	Advanced Materials
Volume	25
Issue number	29
DOIs	https://doi.org/10.1002/adma.201301278
State	Published - Aug 7 2013

Funding

Keywords

bipyramids
density gradient centrifugation
gold nanoparticles
localized surface plasmon resonance
refractive index sensing
rhombic dodecahedra

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
General Materials Science

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10.1002/adma.201301278

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title = "Centrifugal shape sorting and optical response of polyhedral gold nanoparticles",

abstract = "A centrifugal route for separating small {110}-faceted gold nanostructures, namely rhombic dodecahedra (RD) and triangular bipyramids (BPs), which form simultaneously during synthesis and cannot be separated by means of conventional filtration methods, is presented. The centrifuged solution shows two distinct bands: i) RD and ii) BPs, as verified in the corresponding scanning electron microscopy images. The sorted BPs show a refractive index dependence 2.5 times that of the as-synthesized, unsorted mixture.",

keywords = "bipyramids, density gradient centrifugation, gold nanoparticles, localized surface plasmon resonance, refractive index sensing, rhombic dodecahedra",

author = "Shin, {Yu Jin} and Emilie Ringe and Personick, {Michelle L.} and Cardinal, {M. Fernanda} and Mirkin, {Chad A.} and Marks, {Laurence D.} and {Van Duyne}, {Richard P.} and Hersam, {Mark C.}",

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journal = "Advanced Materials",

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T1 - Centrifugal shape sorting and optical response of polyhedral gold nanoparticles

AU - Shin, Yu Jin

AU - Ringe, Emilie

AU - Personick, Michelle L.

AU - Cardinal, M. Fernanda

AU - Mirkin, Chad A.

AU - Marks, Laurence D.

AU - Van Duyne, Richard P.

AU - Hersam, Mark C.

PY - 2013/8/7

Y1 - 2013/8/7

N2 - A centrifugal route for separating small {110}-faceted gold nanostructures, namely rhombic dodecahedra (RD) and triangular bipyramids (BPs), which form simultaneously during synthesis and cannot be separated by means of conventional filtration methods, is presented. The centrifuged solution shows two distinct bands: i) RD and ii) BPs, as verified in the corresponding scanning electron microscopy images. The sorted BPs show a refractive index dependence 2.5 times that of the as-synthesized, unsorted mixture.

AB - A centrifugal route for separating small {110}-faceted gold nanostructures, namely rhombic dodecahedra (RD) and triangular bipyramids (BPs), which form simultaneously during synthesis and cannot be separated by means of conventional filtration methods, is presented. The centrifuged solution shows two distinct bands: i) RD and ii) BPs, as verified in the corresponding scanning electron microscopy images. The sorted BPs show a refractive index dependence 2.5 times that of the as-synthesized, unsorted mixture.

KW - bipyramids

KW - density gradient centrifugation

KW - gold nanoparticles

KW - localized surface plasmon resonance

KW - refractive index sensing

KW - rhombic dodecahedra

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Centrifugal shape sorting and optical response of polyhedral gold nanoparticles

Abstract

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Keywords

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