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

E.S. Kooij; W. Ahmed; C. Hellenthal; H.J.W. Zandvliet; B. Poelsema

doi:10.1016/j.colsurfa.2012.01.041

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

E.S. Kooij^*, W. Ahmed, C. Hellenthal, H.J.W. Zandvliet, B. Poelsema

^*Corresponding author for this work

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

49 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 language	English
Pages (from-to)	231-238
Number of pages	8
Journal	Colloids and surfaces A: Physicochemical and engineering aspects
Volume	413
DOIs	https://doi.org/10.1016/j.colsurfa.2012.01.041
Publication status	Published - 2012
Event	25th Conference of the European Colloid and Interface Society, ECIS 2011 - Berlin, Germany Duration: 4 Sept 2011 → 9 Sept 2011 Conference number: 25

Keywords

Plasmonic resonance
Gold nanorods
Multi-branched nanostars
Optical properties

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10.1016/j.colsurfa.2012.01.041

49 Citations
1 Poster

From nanorods to nanostars: Tuning the optical properties of gold nanoparticles
Kooij, E. S., Ahmed, W., Hellenthal, C., Zandvliet, H. J. W. & Poelsema, B., 4 Sept 2011. 1 p.
Research output: Contribution to conference › Poster › Other research output

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",

keywords = "Plasmonic resonance, Gold nanorods, Multi-branched nanostars, Optical properties",

author = "E.S. Kooij and W. Ahmed and C. Hellenthal and H.J.W. Zandvliet and B. Poelsema",

year = "2012",

doi = "10.1016/j.colsurfa.2012.01.041",

language = "English",

volume = "413",

pages = "231--238",

journal = "Colloids and surfaces A: Physicochemical and engineering aspects",

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note = "25th Conference of the European Colloid and Interface Society, ECIS 2011, ECIS ; Conference date: 04-09-2011 Through 09-09-2011",

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T1 - From nanorods to nanostars

T2 - 25th Conference of the European Colloid and Interface Society, ECIS 2011

AU - Kooij, E.S.

AU - Ahmed, W.

AU - Hellenthal, C.

AU - Zandvliet, H.J.W.

AU - Poelsema, B.

N1 - Conference code: 25

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 - Plasmonic resonance

KW - Gold nanorods

KW - Multi-branched nanostars

KW - Optical properties

U2 - 10.1016/j.colsurfa.2012.01.041

DO - 10.1016/j.colsurfa.2012.01.041

M3 - Article

SN - 0927-7757

VL - 413

SP - 231

EP - 238

JO - Colloids and surfaces A: Physicochemical and engineering aspects

JF - Colloids and surfaces A: Physicochemical and engineering aspects

Y2 - 4 September 2011 through 9 September 2011

ER -

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

Abstract

Keywords

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

Cite this