Formation of highly thin, electron-transparent gold nanoplates from nanoseeds in ternary mixtures of cetyltrimethylammonium bromide, poly(vinyl pyrrolidone), and poly(ethylene glycol)

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Abstract

A simple approach to grow highly thin and electron-transparent gold nanoplates with a micrometer range edge-length dimension is demonstrated. The thin nanoplates were obtained by realizing an effective two-dimensional (2D) crystal growth of the nanoseed in a ternary surfactant mixture of cetyltrimethylammonium bromide (CTAB), poly (vinyl pyrrolidone) (PVP), and poly (ethylene glycol) (PEG). By simply controlling the concentration ratio of these three surfactants in the growth solution, high yield triangular and hexagonal nanoplates with thicknesses as low as ca. < 5 nm and edge-length dimensions extended up to ca. 1 μm could be realized. It was found that PVP and PEG play a unique combinative function in the projection of effective 2D crystal growth of the nanoseed probably via effective selective adhesion on the nanocrystals plane. Owing to their special characteristics, the highly thin gold nanoplates should find extensive use in catalysis, nanoelectronics, and surface-enhanced Raman spectroscopy (SERS) applications.

Original languageEnglish
Pages (from-to)3694-3698
Number of pages5
JournalCrystal Growth and Design
Volume10
Issue number8
DOIs
Publication statusPublished - 4 Aug 2010

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Pyrrolidinones
Crystallization
Crystal growth
Surface-Active Agents
Gold
Polyethylene glycols
glycols
bromides
crystal growth
Surface active agents
ethylene
surfactants
gold
Nanoelectronics
Electrons
Nanocrystals
Catalysis
catalysis
Raman spectroscopy
micrometers

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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title = "Formation of highly thin, electron-transparent gold nanoplates from nanoseeds in ternary mixtures of cetyltrimethylammonium bromide, poly(vinyl pyrrolidone), and poly(ethylene glycol)",
abstract = "A simple approach to grow highly thin and electron-transparent gold nanoplates with a micrometer range edge-length dimension is demonstrated. The thin nanoplates were obtained by realizing an effective two-dimensional (2D) crystal growth of the nanoseed in a ternary surfactant mixture of cetyltrimethylammonium bromide (CTAB), poly (vinyl pyrrolidone) (PVP), and poly (ethylene glycol) (PEG). By simply controlling the concentration ratio of these three surfactants in the growth solution, high yield triangular and hexagonal nanoplates with thicknesses as low as ca. < 5 nm and edge-length dimensions extended up to ca. 1 μm could be realized. It was found that PVP and PEG play a unique combinative function in the projection of effective 2D crystal growth of the nanoseed probably via effective selective adhesion on the nanocrystals plane. Owing to their special characteristics, the highly thin gold nanoplates should find extensive use in catalysis, nanoelectronics, and surface-enhanced Raman spectroscopy (SERS) applications.",
author = "Akrajas, {Ali Umar} and Munetaka Oyama and {Mat Salleh}, Muhamad and {Yeop Majlis}, Burhanuddin",
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T1 - Formation of highly thin, electron-transparent gold nanoplates from nanoseeds in ternary mixtures of cetyltrimethylammonium bromide, poly(vinyl pyrrolidone), and poly(ethylene glycol)

AU - Akrajas, Ali Umar

AU - Oyama, Munetaka

AU - Mat Salleh, Muhamad

AU - Yeop Majlis, Burhanuddin

PY - 2010/8/4

Y1 - 2010/8/4

N2 - A simple approach to grow highly thin and electron-transparent gold nanoplates with a micrometer range edge-length dimension is demonstrated. The thin nanoplates were obtained by realizing an effective two-dimensional (2D) crystal growth of the nanoseed in a ternary surfactant mixture of cetyltrimethylammonium bromide (CTAB), poly (vinyl pyrrolidone) (PVP), and poly (ethylene glycol) (PEG). By simply controlling the concentration ratio of these three surfactants in the growth solution, high yield triangular and hexagonal nanoplates with thicknesses as low as ca. < 5 nm and edge-length dimensions extended up to ca. 1 μm could be realized. It was found that PVP and PEG play a unique combinative function in the projection of effective 2D crystal growth of the nanoseed probably via effective selective adhesion on the nanocrystals plane. Owing to their special characteristics, the highly thin gold nanoplates should find extensive use in catalysis, nanoelectronics, and surface-enhanced Raman spectroscopy (SERS) applications.

AB - A simple approach to grow highly thin and electron-transparent gold nanoplates with a micrometer range edge-length dimension is demonstrated. The thin nanoplates were obtained by realizing an effective two-dimensional (2D) crystal growth of the nanoseed in a ternary surfactant mixture of cetyltrimethylammonium bromide (CTAB), poly (vinyl pyrrolidone) (PVP), and poly (ethylene glycol) (PEG). By simply controlling the concentration ratio of these three surfactants in the growth solution, high yield triangular and hexagonal nanoplates with thicknesses as low as ca. < 5 nm and edge-length dimensions extended up to ca. 1 μm could be realized. It was found that PVP and PEG play a unique combinative function in the projection of effective 2D crystal growth of the nanoseed probably via effective selective adhesion on the nanocrystals plane. Owing to their special characteristics, the highly thin gold nanoplates should find extensive use in catalysis, nanoelectronics, and surface-enhanced Raman spectroscopy (SERS) applications.

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