Chain-length dependence of the structures and phases of CH[sub 3](CH[sub 2])[sub [ital n][minus]1] SH self-assembled on Au(111)

Journal Article · Mon Apr 19 00:00:00 EDT 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.70.2447· OSTI ID:6668962

Fenter, P; Eisenberger, P ^[1]; Liang, K S ^[2]

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1. Department of Physics and Princeton Materials Institute, Princeton University, Princeton, New Jersey 08540 (United States)
2. Exxon Corporate Research, Annandale, New Jersey 08801 (United States)

A grazing incidence x-ray diffraction study of CH[sub 3](CH[sub 2])[sub [ital n][minus]1]SH self-assembled on a Au(111) surface shows that self-assembly results in a nonequilibrium state with a specific defect structure. We also explore the global ([ital n],[ital T]) phase diagram whose phases are distinguished by the tilt direction and the two-dimensional periodicity. These phases result in distinct long ([ital n][gt]14) and short ([ital n][lt]14) chain-length regimes, and reflect the relative importance of the hydrocarbon and interface interactions in these systems.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6668962
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 70:16; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
CHEMICAL REACTIONS
CHEMISORPTION
COHERENT SCATTERING
DEFECTS
DIAGRAMS
DIFFRACTION
FILMS
HYDROCARBONS
MOLECULAR STRUCTURE
ORGANIC COMPOUNDS
PHASE DIAGRAMS
SCATTERING
SEPARATION PROCESSES
SORPTION
TEMPERATURE DEPENDENCE
THIN FILMS
X-RAY DIFFRACTION