Scanning Tunneling Microscopy Determination of Single Nanocrystal Core Sizes via Correlation with Mass Spectrometry

T. P. Bigioni; T. G. Schaaff; R. B. Wyrwas; L. E. Harrell; R. L. Whetten; P. N. First

doi:10.1021/jp0376931

Scanning Tunneling Microscopy Determination of Single Nanocrystal Core Sizes via Correlation with Mass Spectrometry

T. P. Bigioni, T. G. Schaaff, R. B. Wyrwas, L. E. Harrell, R. L. Whetten, P. N. First

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

7 Scopus citations

Abstract

We show that single alkanethiol-passivated gold nanocrystals can be identified by core size in scanning tunneling microscopy (STM) experiments, through a comparison of the measured STM heights with a direct determination of the gold core sizes by mass spectrometry. We take advantage of the discrete size distribution to correlate the peaks in a histogram of nanocrystal heights with the distinct abundance peaks in a mass spectrum. The correlation establishes a mapping from STM height to core mass or mean core diameter. This is vitally important for the interpretation of size-dependent "single-molecule" tunneling spectra from nanocrystal compounds.

Original language	English (US)
Pages (from-to)	3772-3776
Number of pages	5
Journal	Journal of Physical Chemistry B
Volume	108
Issue number	12
DOIs	https://doi.org/10.1021/jp0376931
State	Published - Mar 25 2004
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1021/jp0376931

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title = "Scanning Tunneling Microscopy Determination of Single Nanocrystal Core Sizes via Correlation with Mass Spectrometry",

abstract = "We show that single alkanethiol-passivated gold nanocrystals can be identified by core size in scanning tunneling microscopy (STM) experiments, through a comparison of the measured STM heights with a direct determination of the gold core sizes by mass spectrometry. We take advantage of the discrete size distribution to correlate the peaks in a histogram of nanocrystal heights with the distinct abundance peaks in a mass spectrum. The correlation establishes a mapping from STM height to core mass or mean core diameter. This is vitally important for the interpretation of size-dependent {"}single-molecule{"} tunneling spectra from nanocrystal compounds.",

author = "Bigioni, {T. P.} and Schaaff, {T. G.} and Wyrwas, {R. B.} and Harrell, {L. E.} and Whetten, {R. L.} and First, {P. N.}",

year = "2004",

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T1 - Scanning Tunneling Microscopy Determination of Single Nanocrystal Core Sizes via Correlation with Mass Spectrometry

AU - Bigioni, T. P.

AU - Schaaff, T. G.

AU - Wyrwas, R. B.

AU - Harrell, L. E.

AU - Whetten, R. L.

AU - First, P. N.

PY - 2004/3/25

Y1 - 2004/3/25

N2 - We show that single alkanethiol-passivated gold nanocrystals can be identified by core size in scanning tunneling microscopy (STM) experiments, through a comparison of the measured STM heights with a direct determination of the gold core sizes by mass spectrometry. We take advantage of the discrete size distribution to correlate the peaks in a histogram of nanocrystal heights with the distinct abundance peaks in a mass spectrum. The correlation establishes a mapping from STM height to core mass or mean core diameter. This is vitally important for the interpretation of size-dependent "single-molecule" tunneling spectra from nanocrystal compounds.

AB - We show that single alkanethiol-passivated gold nanocrystals can be identified by core size in scanning tunneling microscopy (STM) experiments, through a comparison of the measured STM heights with a direct determination of the gold core sizes by mass spectrometry. We take advantage of the discrete size distribution to correlate the peaks in a histogram of nanocrystal heights with the distinct abundance peaks in a mass spectrum. The correlation establishes a mapping from STM height to core mass or mean core diameter. This is vitally important for the interpretation of size-dependent "single-molecule" tunneling spectra from nanocrystal compounds.

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JF - Journal of Physical Chemistry B

IS - 12

ER -

Scanning Tunneling Microscopy Determination of Single Nanocrystal Core Sizes via Correlation with Mass Spectrometry

Abstract

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