Structural characterization of Au nano bipyramids: Reshaping under thermal annealing, the capping agent effect and surface decoration with Pt

Maria Fernanda Torresan; Paula C. Angelomé; Lourdes Bazán-Diaz; J. Jesus Velázquez-Salazar; Rubén Mendoza-Cruz; Rodrigo A. Iglesias; Miguel José-Yacamán

doi:10.1088/1361-6528/ab0144

Structural characterization of Au nano bipyramids: Reshaping under thermal annealing, the capping agent effect and surface decoration with Pt

Maria Fernanda Torresan, Paula C. Angelomé, Lourdes Bazán-Diaz, J. Jesus Velázquez-Salazar, Rubén Mendoza-Cruz, Rodrigo A. Iglesias, Miguel José-Yacamán

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

4 Scopus citations

Abstract

Anisotropic gold nanoparticles offer potential applications due to their functionalities and shape-dependent properties. Reshaping noble metal nanoparticles is an interesting field with optical, surface-enhanced Raman spectroscopy, catalytic applications and potential application as a photothermic therapy. This work comprises a structural study on gold nano bipyramids (Au NBPs) and nanodumbbells, and the evolution of Au NBPs capped with cetyltrimethylammonium bromide and dodecanethiol through an in situ and ex situ heating process in high vacuum. Also, we study the reshaping of Au NBPs by the addition of Pt to study the surface modification and the strain generated on a single particle by geometric phase analysis.

Original language	English (US)
Article number	205701
Journal	Nanotechnology
Volume	30
Issue number	20
DOIs	https://doi.org/10.1088/1361-6528/ab0144
State	Published - Mar 5 2019
Externally published	Yes

Keywords

Pt deposition
gold nano bipyramids
ligand exchange
thermal annealing

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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10.1088/1361-6528/ab0144

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title = "Structural characterization of Au nano bipyramids: Reshaping under thermal annealing, the capping agent effect and surface decoration with Pt",

abstract = "Anisotropic gold nanoparticles offer potential applications due to their functionalities and shape-dependent properties. Reshaping noble metal nanoparticles is an interesting field with optical, surface-enhanced Raman spectroscopy, catalytic applications and potential application as a photothermic therapy. This work comprises a structural study on gold nano bipyramids (Au NBPs) and nanodumbbells, and the evolution of Au NBPs capped with cetyltrimethylammonium bromide and dodecanethiol through an in situ and ex situ heating process in high vacuum. Also, we study the reshaping of Au NBPs by the addition of Pt to study the surface modification and the strain generated on a single particle by geometric phase analysis.",

keywords = "Pt deposition, gold nano bipyramids, ligand exchange, thermal annealing",

author = "Torresan, {Maria Fernanda} and Angelom{\'e}, {Paula C.} and Lourdes Baz{\'a}n-Diaz and Vel{\'a}zquez-Salazar, {J. Jesus} and Rub{\'e}n Mendoza-Cruz and Iglesias, {Rodrigo A.} and Miguel Jos{\'e}-Yacam{\'a}n",

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doi = "10.1088/1361-6528/ab0144",

language = "English (US)",

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T2 - Reshaping under thermal annealing, the capping agent effect and surface decoration with Pt

AU - Torresan, Maria Fernanda

AU - Angelomé, Paula C.

AU - Bazán-Diaz, Lourdes

AU - Velázquez-Salazar, J. Jesus

AU - Mendoza-Cruz, Rubén

AU - Iglesias, Rodrigo A.

AU - José-Yacamán, Miguel

PY - 2019/3/5

Y1 - 2019/3/5

N2 - Anisotropic gold nanoparticles offer potential applications due to their functionalities and shape-dependent properties. Reshaping noble metal nanoparticles is an interesting field with optical, surface-enhanced Raman spectroscopy, catalytic applications and potential application as a photothermic therapy. This work comprises a structural study on gold nano bipyramids (Au NBPs) and nanodumbbells, and the evolution of Au NBPs capped with cetyltrimethylammonium bromide and dodecanethiol through an in situ and ex situ heating process in high vacuum. Also, we study the reshaping of Au NBPs by the addition of Pt to study the surface modification and the strain generated on a single particle by geometric phase analysis.

AB - Anisotropic gold nanoparticles offer potential applications due to their functionalities and shape-dependent properties. Reshaping noble metal nanoparticles is an interesting field with optical, surface-enhanced Raman spectroscopy, catalytic applications and potential application as a photothermic therapy. This work comprises a structural study on gold nano bipyramids (Au NBPs) and nanodumbbells, and the evolution of Au NBPs capped with cetyltrimethylammonium bromide and dodecanethiol through an in situ and ex situ heating process in high vacuum. Also, we study the reshaping of Au NBPs by the addition of Pt to study the surface modification and the strain generated on a single particle by geometric phase analysis.

KW - Pt deposition

KW - gold nano bipyramids

KW - ligand exchange

KW - thermal annealing

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Structural characterization of Au nano bipyramids: Reshaping under thermal annealing, the capping agent effect and surface decoration with Pt

Abstract

Keywords

ASJC Scopus subject areas

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