Reversible displacement of chemisorbed n-alkanethiol molecules on Au(111) surfaces. An atomic force microscopy study

Journal Article · Mon Jan 31 23:00:00 EST 1994 · Langmuir; (United States)

DOI:https://doi.org/10.1021/la00014a006· OSTI ID:7233043

Liu, G Y; Salmeron, M B ^[1]

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1. Lawrence Berkeley Lab., CA (United States) Univ. of California, Berkeley, CA (United States)

Atomic force microscopy has been used to study the structure and the stability of CH[sub 3](CH[sub 2])[sub 9]SH and CH[sub 3](CH[sub 2])[sub 17]SH molecules self-assembled on a Au(111) surface as a function of the load applied by the tip. Atomic resolution images taken during a loading and unloading cycle have revealed two sudden transitions corresponding to changes of the periodicity from a ([radical] 3 x [radical] 3)R30[degrees] (due to thiol layers) to a (1 x 1) due to Au(111), and back to the ([radical] 3 x [radical] 3)R30[degrees] of thiol layers. These results represent the first observation that under high load, self-assembled n-alkanethiol molecules on Au(111) can be reversibly displaced on the substrate surface by a sharp tip during the scan. 16 refs., 3 figs.

• OSTI ID: 7233043
• Journal Information: Langmuir; (United States), Journal Name: Langmuir; (United States) Vol. 10:2; ISSN LANGD5; ISSN 0743-7463
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
661200 -- Techniques of General Use in Physics-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AGGLOMERATION
CHEMICAL REACTIONS
CHEMISORPTION
DYNAMIC LOADS
ELEMENTS
FILMS
IMAGES
LUBRICANTS
LUBRICATION
METALS
MOLECULAR STRUCTURE
MOLECULES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
SEPARATION PROCESSES
SILVER
SORPTION
STABILITY
SURFACE PROPERTIES
THIN FILMS
THIOLS
TRANSITION ELEMENTS