Chemisorption of ferrocene on Si(111)-Ag√3: Frustrated conformational flexibility

Christoph Tegenkamp; Jedrzej Schmeidel; Herbert Pfnür

doi:10.1016/j.susc.2010.10.027

Chemisorption of ferrocene on Si(111)-Ag√3: Frustrated conformational flexibility

Christoph Tegenkamp^*
, Jedrzej Schmeidel
, Herbert Pfnür

^*Corresponding author for this work

Institute of Solid State Physics

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

Abstract

The adsorption of ferrocene-dithiol on Si(111)-Ag√3× √3 reconstruction has been studied by scanning tunneling microscopy. Preferred chemisorption was found at defect sites, e.g. grain boundaries, with characteristic distortions of the two dimensional electron gas. Occasionally, adsorption also occurs at perfect terrace sites, where submolecular resolution was achieved and the adsorption geometry was deduced. Due to the formation of Ag-S bonds, the conformational flexibility of the free ferrocene is restricted. Thus, the frozen rotation leaves only two different rotational configurations of ferrocene.

Original language	English
Pages (from-to)	267-271
Number of pages	5
Journal	Surface Science
Volume	605
Issue number	3-4
DOIs	https://doi.org/10.1016/j.susc.2010.10.027
Publication status	Published - 22 Oct 2010

Keywords

Hybrid interface
Molecules
STM

ASJC Scopus subject areas

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

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10.1016/j.susc.2010.10.027

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title = "Chemisorption of ferrocene on Si(111)-Ag√3: Frustrated conformational flexibility",

abstract = "The adsorption of ferrocene-dithiol on Si(111)-Ag√3× √3 reconstruction has been studied by scanning tunneling microscopy. Preferred chemisorption was found at defect sites, e.g. grain boundaries, with characteristic distortions of the two dimensional electron gas. Occasionally, adsorption also occurs at perfect terrace sites, where submolecular resolution was achieved and the adsorption geometry was deduced. Due to the formation of Ag-S bonds, the conformational flexibility of the free ferrocene is restricted. Thus, the frozen rotation leaves only two different rotational configurations of ferrocene.",

keywords = "Hybrid interface, Molecules, STM",

author = "Christoph Tegenkamp and Jedrzej Schmeidel and Herbert Pfn{\"u}r",

note = "Funding information: We thank Ingmar Baumgardt and Holger Butensch{\"o}n from the organic chemistry department in Hannover for functionalization of ferrocene molecules with thiol groups. The work was financially supported by the Deutsche Forschungsgemeinschaft .",

year = "2010",

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doi = "10.1016/j.susc.2010.10.027",

language = "English",

volume = "605",

pages = "267--271",

journal = "Surface Science",

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TY - JOUR

T1 - Chemisorption of ferrocene on Si(111)-Ag√3

T2 - Frustrated conformational flexibility

AU - Tegenkamp, Christoph

AU - Schmeidel, Jedrzej

AU - Pfnür, Herbert

N1 - Funding information: We thank Ingmar Baumgardt and Holger Butenschön from the organic chemistry department in Hannover for functionalization of ferrocene molecules with thiol groups. The work was financially supported by the Deutsche Forschungsgemeinschaft .

PY - 2010/10/22

Y1 - 2010/10/22

N2 - The adsorption of ferrocene-dithiol on Si(111)-Ag√3× √3 reconstruction has been studied by scanning tunneling microscopy. Preferred chemisorption was found at defect sites, e.g. grain boundaries, with characteristic distortions of the two dimensional electron gas. Occasionally, adsorption also occurs at perfect terrace sites, where submolecular resolution was achieved and the adsorption geometry was deduced. Due to the formation of Ag-S bonds, the conformational flexibility of the free ferrocene is restricted. Thus, the frozen rotation leaves only two different rotational configurations of ferrocene.

AB - The adsorption of ferrocene-dithiol on Si(111)-Ag√3× √3 reconstruction has been studied by scanning tunneling microscopy. Preferred chemisorption was found at defect sites, e.g. grain boundaries, with characteristic distortions of the two dimensional electron gas. Occasionally, adsorption also occurs at perfect terrace sites, where submolecular resolution was achieved and the adsorption geometry was deduced. Due to the formation of Ag-S bonds, the conformational flexibility of the free ferrocene is restricted. Thus, the frozen rotation leaves only two different rotational configurations of ferrocene.

KW - Hybrid interface

KW - Molecules

KW - STM

UR - https://www.scopus.com/pages/publications/78651248924

U2 - 10.1016/j.susc.2010.10.027

DO - 10.1016/j.susc.2010.10.027

M3 - Article

AN - SCOPUS:78651248924

SN - 0039-6028

VL - 605

SP - 267

EP - 271

JO - Surface Science

JF - Surface Science

IS - 3-4

ER -

Chemisorption of ferrocene on Si(111)-Ag√3: Frustrated conformational flexibility

Abstract

Keywords

ASJC Scopus subject areas

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