Scanning tunneling microscopy observations of α,ω-bis(mercaptomethylthienyl)alkane derivatives self-assembled on Au(111)

Tohru Nakamura, Hiroshi Kondoh, Mutsuyoshi Matsumoto, Hisakazu Nozoye

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

1,8-Bis(5-mercaptomethyl-2-thienyl)octane(1a), 1,8-bis(5′-mercaptomethyl-2,2′-bithienyl-5-yl)octane(1b), 1-(5-mercaptomethyl-2-thienyl)-4-(2-thienyl)butane (1c), 1,8-bis(2,2′-bithienyl-5-yl)octane (2), 1,12-dode-canedithiol (3), and 1,4-bis(mercaptomethyl)benzene (4) were prepared, and thier adsorption states on a gold single crystal surface were studied by using scanning tunneling microscopy under ultrahigh-vacuum condition. Two ordered phases were observed for the mercaptomethylthiophene derivatives 1: The first phase is composed of one-dimensional molecular rows with spacings smaller than those for other monothiols and the second one has a previously unknown two-dimensional honeycomb structure. In both of the two phases, the molecules were arranged with end-on configuration in which only one end thiol is attached to the gold substrate. The absence of the honeycomb structure for 3 and 4 suggests the important role of the mercaptomethylthienyl moiety for the formation of the specific structures.

Original languageEnglish
Pages (from-to)5977-5979
Number of pages3
JournalLangmuir
Volume12
Issue number25
Publication statusPublished - 1996 Dec 11
Externally publishedYes

Fingerprint

Honeycomb structures
Alkanes
Scanning tunneling microscopy
octanes
Paraffins
alkanes
honeycomb structures
scanning tunneling microscopy
Gold
Derivatives
Single crystal surfaces
Butane
Ultrahigh vacuum
gold
Benzene
butanes
crystal surfaces
Sulfhydryl Compounds
thiols
Adsorption

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Scanning tunneling microscopy observations of α,ω-bis(mercaptomethylthienyl)alkane derivatives self-assembled on Au(111). / Nakamura, Tohru; Kondoh, Hiroshi; Matsumoto, Mutsuyoshi; Nozoye, Hisakazu.

In: Langmuir, Vol. 12, No. 25, 11.12.1996, p. 5977-5979.

Research output: Contribution to journalArticle

Nakamura, Tohru ; Kondoh, Hiroshi ; Matsumoto, Mutsuyoshi ; Nozoye, Hisakazu. / Scanning tunneling microscopy observations of α,ω-bis(mercaptomethylthienyl)alkane derivatives self-assembled on Au(111). In: Langmuir. 1996 ; Vol. 12, No. 25. pp. 5977-5979.
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