Preparation and characterization of gold nanodumbbells

Chien Jung Huang; Pin Hsiang Chiu; Yeong Her Wang; Wen Ray Chen; Teen Hang Meen; Cheng Fu Yang

doi:10.1088/0957-4484/17/21/012

Preparation and characterization of gold nanodumbbells

Chien Jung Huang, Pin Hsiang Chiu, Yeong Her Wang, Wen Ray Chen, Teen Hang Meen, Cheng Fu Yang

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

21 Citations (Scopus)

Abstract

Well-dispersed gold nanodumbbells (GNDs) in an aqueous phase have been successfully fabricated by an electrochemical method using a micelle template formed by two surfactants with the addition of acetone solvent during electrolysis, the primary surfactant being cetyltrimethylammonium bromide (CTABr) and the cosurfactant being tetradecyltrimethylammonium bromide (TTABr). The role of acetone solvent is found to change the gold nanoparticles' shape from a rod to a dumbbell. The shape of the GNDs is fatter at the two ends and thinner in the middle section. The GNDs have been determined to be pure gold with a single-crystalline face-centred cubic (FCC) structure from selected area electron diffraction (SAED) patterns. Morphology features of GNDs in cross-section have also been investigated by dark field (DF) transmission electron microscopy (TEM) images. These GNDs exhibit octagonal structure in cross-section and an aspect ratio of around 3.

Original language	English
Article number	012
Pages (from-to)	5355-5362
Number of pages	8
Journal	Nanotechnology
Volume	17
Issue number	21
DOIs	https://doi.org/10.1088/0957-4484/17/21/012
Publication status	Published - 2006 Nov 14

All Science Journal Classification (ASJC) codes

Bioengineering
Chemistry(all)
Materials Science(all)
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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10.1088/0957-4484/17/21/012

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title = "Preparation and characterization of gold nanodumbbells",

abstract = "Well-dispersed gold nanodumbbells (GNDs) in an aqueous phase have been successfully fabricated by an electrochemical method using a micelle template formed by two surfactants with the addition of acetone solvent during electrolysis, the primary surfactant being cetyltrimethylammonium bromide (CTABr) and the cosurfactant being tetradecyltrimethylammonium bromide (TTABr). The role of acetone solvent is found to change the gold nanoparticles' shape from a rod to a dumbbell. The shape of the GNDs is fatter at the two ends and thinner in the middle section. The GNDs have been determined to be pure gold with a single-crystalline face-centred cubic (FCC) structure from selected area electron diffraction (SAED) patterns. Morphology features of GNDs in cross-section have also been investigated by dark field (DF) transmission electron microscopy (TEM) images. These GNDs exhibit octagonal structure in cross-section and an aspect ratio of around 3.",

author = "Huang, {Chien Jung} and Chiu, {Pin Hsiang} and Wang, {Yeong Her} and Chen, {Wen Ray} and Meen, {Teen Hang} and Yang, {Cheng Fu}",

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doi = "10.1088/0957-4484/17/21/012",

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T1 - Preparation and characterization of gold nanodumbbells

AU - Huang, Chien Jung

AU - Chiu, Pin Hsiang

AU - Wang, Yeong Her

AU - Chen, Wen Ray

AU - Meen, Teen Hang

AU - Yang, Cheng Fu

PY - 2006/11/14

Y1 - 2006/11/14

N2 - Well-dispersed gold nanodumbbells (GNDs) in an aqueous phase have been successfully fabricated by an electrochemical method using a micelle template formed by two surfactants with the addition of acetone solvent during electrolysis, the primary surfactant being cetyltrimethylammonium bromide (CTABr) and the cosurfactant being tetradecyltrimethylammonium bromide (TTABr). The role of acetone solvent is found to change the gold nanoparticles' shape from a rod to a dumbbell. The shape of the GNDs is fatter at the two ends and thinner in the middle section. The GNDs have been determined to be pure gold with a single-crystalline face-centred cubic (FCC) structure from selected area electron diffraction (SAED) patterns. Morphology features of GNDs in cross-section have also been investigated by dark field (DF) transmission electron microscopy (TEM) images. These GNDs exhibit octagonal structure in cross-section and an aspect ratio of around 3.

AB - Well-dispersed gold nanodumbbells (GNDs) in an aqueous phase have been successfully fabricated by an electrochemical method using a micelle template formed by two surfactants with the addition of acetone solvent during electrolysis, the primary surfactant being cetyltrimethylammonium bromide (CTABr) and the cosurfactant being tetradecyltrimethylammonium bromide (TTABr). The role of acetone solvent is found to change the gold nanoparticles' shape from a rod to a dumbbell. The shape of the GNDs is fatter at the two ends and thinner in the middle section. The GNDs have been determined to be pure gold with a single-crystalline face-centred cubic (FCC) structure from selected area electron diffraction (SAED) patterns. Morphology features of GNDs in cross-section have also been investigated by dark field (DF) transmission electron microscopy (TEM) images. These GNDs exhibit octagonal structure in cross-section and an aspect ratio of around 3.

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Preparation and characterization of gold nanodumbbells

Abstract

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