Electron transport in two-dimensional arrays of gold nanocrystals investigated by scanning electrochemical microscopy

Peter Liljeroth; Daniël Vanmaekelbergh; Virginia Ruiz; Kyösti Kontturi; Hua Jiang; Esko I. Kauppinen; Bernadette M. Quinn

doi:10.1021/ja0493188

Electron transport in two-dimensional arrays of gold nanocrystals investigated by scanning electrochemical microscopy

Peter Liljeroth, Daniël Vanmaekelbergh, Virginia Ruiz, Kyösti Kontturi, Hua Jiang, Esko I. Kauppinen, Bernadette M. Quinn (Corresponding Author)

VTT Technical Research Centre of Finland

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

61 Citations (Scopus)

Abstract

This article reports the use of the scanning electrochemical microscope (SECM) to investigate the electronic properties of Langmuir monolayers of alkane thiol protected gold nanocrystals (NCs). A substantial increase in monolayer conductivity upon mechanical compression of the Au NC monolayer is reported for the first time. This may be the room temperature signature of the insulator to metal transition previously reported for comparable silver NC monolayers. Factors influencing the conductivity of the monolayer NC array are discussed.

Original language	English
Pages (from-to)	7126-7132
Journal	Journal of the American Chemical Society
Volume	126
Issue number	22
DOIs	https://doi.org/10.1021/ja0493188
Publication status	Published - 2004
MoE publication type	A1 Journal article-refereed

Keywords

SECM
gold nanocrystals
gold nanoparticles
gold
nanoparticles
monolayers

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10.1021/ja0493188

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title = "Electron transport in two-dimensional arrays of gold nanocrystals investigated by scanning electrochemical microscopy",

abstract = "This article reports the use of the scanning electrochemical microscope (SECM) to investigate the electronic properties of Langmuir monolayers of alkane thiol protected gold nanocrystals (NCs). A substantial increase in monolayer conductivity upon mechanical compression of the Au NC monolayer is reported for the first time. This may be the room temperature signature of the insulator to metal transition previously reported for comparable silver NC monolayers. Factors influencing the conductivity of the monolayer NC array are discussed. ",

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T1 - Electron transport in two-dimensional arrays of gold nanocrystals investigated by scanning electrochemical microscopy

AU - Liljeroth, Peter

AU - Vanmaekelbergh, Daniël

AU - Ruiz, Virginia

AU - Kontturi, Kyösti

AU - Jiang, Hua

AU - Kauppinen, Esko I.

AU - Quinn, Bernadette M.

PY - 2004

Y1 - 2004

N2 - This article reports the use of the scanning electrochemical microscope (SECM) to investigate the electronic properties of Langmuir monolayers of alkane thiol protected gold nanocrystals (NCs). A substantial increase in monolayer conductivity upon mechanical compression of the Au NC monolayer is reported for the first time. This may be the room temperature signature of the insulator to metal transition previously reported for comparable silver NC monolayers. Factors influencing the conductivity of the monolayer NC array are discussed.

AB - This article reports the use of the scanning electrochemical microscope (SECM) to investigate the electronic properties of Langmuir monolayers of alkane thiol protected gold nanocrystals (NCs). A substantial increase in monolayer conductivity upon mechanical compression of the Au NC monolayer is reported for the first time. This may be the room temperature signature of the insulator to metal transition previously reported for comparable silver NC monolayers. Factors influencing the conductivity of the monolayer NC array are discussed.

KW - SECM

KW - gold nanocrystals

KW - gold nanoparticles

KW - gold

KW - nanoparticles

KW - monolayers

U2 - 10.1021/ja0493188

DO - 10.1021/ja0493188

M3 - Article

SN - 0002-7863

VL - 126

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EP - 7132

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 22

ER -

Electron transport in two-dimensional arrays of gold nanocrystals investigated by scanning electrochemical microscopy

Abstract

Keywords

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