Metallic contact formation for molecular electronics: Interactions between vapor-deposited metals and self-assembled monolayers of conjugated mono- and dithiols

Bert De Boer, Martin M. Frank, Yves J. Chabal, Weirong Jiang, Eric Garfunkel, Zhenah Bao

Research output: Contribution to journalArticle

175 Citations (Scopus)

Abstract

We present grazing-incidence Fourier transform infrared and AFM data of Au,Al, and Ti vapor-deposited onto self-assembled monolayers (SAMs) of conjugated mono- and dithiols. SAMs of 4,4‴-dimercapto-p-quaterphenyl, 4,4″-dimercapto-p-terphenyl, and 4,4′-dimercapto-p-biphenyl have reactive thiols at the SAM/vacuum interface that interact with vapor-deposited Au or Al atoms, preventing metal penetration. Conjugated monothiols lack such metal blocking groups, and metals (Au, Al) can penetrate into their SAMs. Vapor deposition of Ti onto conjugated mono- and dithiol SAMs and onto hexadecanethiol SAMs destroys the monolayers.

Original languageEnglish
Pages (from-to)1539-1542
Number of pages4
JournalLangmuir
Volume20
Issue number5
DOIs
Publication statusPublished - Mar 2 2004

Fingerprint

Molecular electronics
metal vapors
molecular electronics
Self assembled monolayers
thiols
Contacts (fluid mechanics)
Metals
Vapors
metals
vapors
terphenyls
interactions
grazing incidence
penetration
vapor deposition
atomic force microscopy
vacuum
Vapor deposition
Sulfhydryl Compounds
atoms

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Metallic contact formation for molecular electronics : Interactions between vapor-deposited metals and self-assembled monolayers of conjugated mono- and dithiols. / De Boer, Bert; Frank, Martin M.; Chabal, Yves J.; Jiang, Weirong; Garfunkel, Eric; Bao, Zhenah.

In: Langmuir, Vol. 20, No. 5, 02.03.2004, p. 1539-1542.

Research output: Contribution to journalArticle

De Boer, Bert ; Frank, Martin M. ; Chabal, Yves J. ; Jiang, Weirong ; Garfunkel, Eric ; Bao, Zhenah. / Metallic contact formation for molecular electronics : Interactions between vapor-deposited metals and self-assembled monolayers of conjugated mono- and dithiols. In: Langmuir. 2004 ; Vol. 20, No. 5. pp. 1539-1542.
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