Detection and switching of the oxidation state of Fe in a self-assembled monolayer

Fan Zheng; V. Pérez-Dieste; J. L. McChesney; Yan Yeung Luk; Nicholas L. Abbott; F. J. Himpsel

doi:10.1016/j.susc.2005.05.014

Detection and switching of the oxidation state of Fe in a self-assembled monolayer

Fan Zheng, V. Pérez-Dieste, J. L. McChesney, Yan Yeung Luk, Nicholas L. Abbott, F. J. Himpsel

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

30 Scopus citations

Abstract

A self-assembled monolayer of ferrocene-capped alkanethiols is produced in two stable oxidation states of Fe (Fe²⁺ and Fe³⁺). These oxidation states are detected with sub-monolayer sensitivity by the fine structure of the Fe2p absorption edge. The native Fe²⁺ ferrocene layer is converted chemically to Fe³⁺, and the Fe³⁺ layer can be transformed back to Fe²⁺ or possibly Fe⁰ by irradiation with soft X-rays. The results have implications on switching mechanisms in molecular electronics.

Original language	English (US)
Pages (from-to)	L191-L196
Journal	Surface Science
Volume	587
Issue number	3
DOIs	https://doi.org/10.1016/j.susc.2005.05.014
State	Published - Aug 10 2005

Keywords

Alkane thiol
Fe
Ferrocene
Molecular electronics
NEXAFS
Photochemistry
Self-assembled monolayer

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.susc.2005.05.014

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@article{457b4187a766487b936873eca516975d,

title = "Detection and switching of the oxidation state of Fe in a self-assembled monolayer",

abstract = "A self-assembled monolayer of ferrocene-capped alkanethiols is produced in two stable oxidation states of Fe (Fe2+ and Fe3+). These oxidation states are detected with sub-monolayer sensitivity by the fine structure of the Fe2p absorption edge. The native Fe2+ ferrocene layer is converted chemically to Fe3+, and the Fe3+ layer can be transformed back to Fe2+ or possibly Fe0 by irradiation with soft X-rays. The results have implications on switching mechanisms in molecular electronics.",

keywords = "Alkane thiol, Fe, Ferrocene, Molecular electronics, NEXAFS, Photochemistry, Self-assembled monolayer",

author = "Fan Zheng and V. P{\'e}rez-Dieste and McChesney, {J. L.} and Luk, {Yan Yeung} and Abbott, {Nicholas L.} and Himpsel, {F. J.}",

note = "Funding Information: We acknowledge helpful suggestions from A. Hitchcock. We also thank G. DeStasio for providing a FeO(OH) sample, J.-L. Lin for preparing a substrate, and J.D. Denlinger for help with the experiment. This work was supported by the NSF under awards No. DMR-0079983 and DMR-0084402 (for the SRC) and by the DOE under contracts No. DE-FG02-01ER45917 and DE-AC03-76SF00098 (for the ALS). ",

year = "2005",

month = aug,

day = "10",

doi = "10.1016/j.susc.2005.05.014",

language = "English (US)",

volume = "587",

pages = "L191--L196",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier",

number = "3",

}

TY - JOUR

T1 - Detection and switching of the oxidation state of Fe in a self-assembled monolayer

AU - Zheng, Fan

AU - Pérez-Dieste, V.

AU - McChesney, J. L.

AU - Luk, Yan Yeung

AU - Abbott, Nicholas L.

AU - Himpsel, F. J.

N1 - Funding Information: We acknowledge helpful suggestions from A. Hitchcock. We also thank G. DeStasio for providing a FeO(OH) sample, J.-L. Lin for preparing a substrate, and J.D. Denlinger for help with the experiment. This work was supported by the NSF under awards No. DMR-0079983 and DMR-0084402 (for the SRC) and by the DOE under contracts No. DE-FG02-01ER45917 and DE-AC03-76SF00098 (for the ALS).

PY - 2005/8/10

Y1 - 2005/8/10

N2 - A self-assembled monolayer of ferrocene-capped alkanethiols is produced in two stable oxidation states of Fe (Fe2+ and Fe3+). These oxidation states are detected with sub-monolayer sensitivity by the fine structure of the Fe2p absorption edge. The native Fe2+ ferrocene layer is converted chemically to Fe3+, and the Fe3+ layer can be transformed back to Fe2+ or possibly Fe0 by irradiation with soft X-rays. The results have implications on switching mechanisms in molecular electronics.

AB - A self-assembled monolayer of ferrocene-capped alkanethiols is produced in two stable oxidation states of Fe (Fe2+ and Fe3+). These oxidation states are detected with sub-monolayer sensitivity by the fine structure of the Fe2p absorption edge. The native Fe2+ ferrocene layer is converted chemically to Fe3+, and the Fe3+ layer can be transformed back to Fe2+ or possibly Fe0 by irradiation with soft X-rays. The results have implications on switching mechanisms in molecular electronics.

KW - Alkane thiol

KW - Fe

KW - Ferrocene

KW - Molecular electronics

KW - NEXAFS

KW - Photochemistry

KW - Self-assembled monolayer

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U2 - 10.1016/j.susc.2005.05.014

DO - 10.1016/j.susc.2005.05.014

M3 - Article

AN - SCOPUS:22544447667

SN - 0039-6028

VL - 587

SP - L191-L196

JO - Surface Science

JF - Surface Science

IS - 3

ER -

Detection and switching of the oxidation state of Fe in a self-assembled monolayer

Abstract

Keywords

ASJC Scopus subject areas

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