From nanorods to nanostars: Tuning the optical properties of gold nanoparticles

Research output: Contribution to journalArticleAcademicpeer-review

30 Citations (Scopus)

Abstract

Seed mediated growth assisted by surfactant is used to grow nanoparticles. The choice of seed particle, i.e. single crystal or multi-twinned, enables growth of nanorods and multi-branched nanoparticles. The latter are generally referred to as nanostars. The shape and size of the nanoparticles can be tuned by varying the solution composition and relative reactant concentrations. The optical properties of nanorods and nanostars are described and discussed in relation to their shape. For nanorods, the aspect ratio is a key parameter determining the plasmon resonance, while the absolute size has a much less pronounced effect. With the nanostars, the length of the branches turns out to be relevant. The optical properties of the multi-branched nanoparticles are discussed in terms of plasmon hybridization
Original languageEnglish
Pages (from-to)231-238
Number of pages8
JournalColloids and surfaces A: Physicochemical and engineering aspects
Volume413
DOIs
Publication statusPublished - 2012

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Nanorods
Gold
nanorods
Optical properties
Tuning
tuning
gold
Nanoparticles
optical properties
nanoparticles
Seed
seeds
Surface-Active Agents
aspect ratio
Aspect ratio
Surface active agents
surfactants
Single crystals
single crystals
Chemical analysis

Keywords

  • METIS-289257
  • IR-84716

Cite this

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title = "From nanorods to nanostars: Tuning the optical properties of gold nanoparticles",
abstract = "Seed mediated growth assisted by surfactant is used to grow nanoparticles. The choice of seed particle, i.e. single crystal or multi-twinned, enables growth of nanorods and multi-branched nanoparticles. The latter are generally referred to as nanostars. The shape and size of the nanoparticles can be tuned by varying the solution composition and relative reactant concentrations. The optical properties of nanorods and nanostars are described and discussed in relation to their shape. For nanorods, the aspect ratio is a key parameter determining the plasmon resonance, while the absolute size has a much less pronounced effect. With the nanostars, the length of the branches turns out to be relevant. The optical properties of the multi-branched nanoparticles are discussed in terms of plasmon hybridization",
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From nanorods to nanostars: Tuning the optical properties of gold nanoparticles. / Kooij, Ernst S.; Ahmed, W.; Hellenthal, Chris; Zandvliet, Henricus J.W.; Poelsema, Bene.

In: Colloids and surfaces A: Physicochemical and engineering aspects, Vol. 413, 2012, p. 231-238.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - From nanorods to nanostars: Tuning the optical properties of gold nanoparticles

AU - Kooij, Ernst S.

AU - Ahmed, W.

AU - Hellenthal, Chris

AU - Zandvliet, Henricus J.W.

AU - Poelsema, Bene

PY - 2012

Y1 - 2012

N2 - Seed mediated growth assisted by surfactant is used to grow nanoparticles. The choice of seed particle, i.e. single crystal or multi-twinned, enables growth of nanorods and multi-branched nanoparticles. The latter are generally referred to as nanostars. The shape and size of the nanoparticles can be tuned by varying the solution composition and relative reactant concentrations. The optical properties of nanorods and nanostars are described and discussed in relation to their shape. For nanorods, the aspect ratio is a key parameter determining the plasmon resonance, while the absolute size has a much less pronounced effect. With the nanostars, the length of the branches turns out to be relevant. The optical properties of the multi-branched nanoparticles are discussed in terms of plasmon hybridization

AB - Seed mediated growth assisted by surfactant is used to grow nanoparticles. The choice of seed particle, i.e. single crystal or multi-twinned, enables growth of nanorods and multi-branched nanoparticles. The latter are generally referred to as nanostars. The shape and size of the nanoparticles can be tuned by varying the solution composition and relative reactant concentrations. The optical properties of nanorods and nanostars are described and discussed in relation to their shape. For nanorods, the aspect ratio is a key parameter determining the plasmon resonance, while the absolute size has a much less pronounced effect. With the nanostars, the length of the branches turns out to be relevant. The optical properties of the multi-branched nanoparticles are discussed in terms of plasmon hybridization

KW - METIS-289257

KW - IR-84716

U2 - 10.1016/j.colsurfa.2012.01.041

DO - 10.1016/j.colsurfa.2012.01.041

M3 - Article

VL - 413

SP - 231

EP - 238

JO - Colloids and surfaces A: Physicochemical and engineering aspects

JF - Colloids and surfaces A: Physicochemical and engineering aspects

SN - 0927-7757

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