Structural Study on Self-Assembled Monolayers of Alkanedithiol Molecules
- 1 March 1998
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 37 (3A) , L297-299
- https://doi.org/10.1143/jjap.37.l297
Abstract
Structures of self-assembled monolayers (SAMs) of alkanedithiol molecules were studied using an ultrahigh vacuum scanning tunneling microscope (UHV-STM) and by Fourier transform infrared reflection-absorption spectroscopy (FT-IR-RAS). Clearly resolved STM images of alkanedithiol SAMs revealed striped structures as bright lines and the distance between the adjacent bright lines was about 1.5 nm, which is in good agreement with the length of the alkanedithiol molecule. Furthermore, the intensities of the CH2 stretching bands in FT-IR-RAS measurement of alkanedithiol SAMs were stronger than those of alkanethiol SAMs. We suggest that the molecules in alkanedithiol SAMs are arranged with their axes parallel to the gold substrate.Keywords
This publication has 11 references indexed in Scilit:
- Coulomb Staircase at Room Temperature in a Self-Assembled Molecular NanostructureScience, 1996
- The Self-Assembly Mechanism of Alkanethiols on Au(111)Science, 1996
- Two-Dimensional Liquid Phase and the px.sqroot.3 Phase of Alkanethiol Self-Assembled Monolayers on Au(111)Langmuir, 1994
- Real-Space Observation of Nanoscale Molecular Domains in Self-Assembled MonolayersLangmuir, 1994
- The c(4X2) Superlattice of n-Alkanethiol Monolayers Self-Assembled on Au(111)Langmuir, 1994
- Domain and Molecular Superlattice Structure of Dodecanethiol Self-Assembled on Au(111)Europhysics Letters, 1994
- Scanning tunneling microscopy of ethanethiolate and n-octadecanethiolate monolayers spontaneously absorbed at gold surfacesJournal of the American Chemical Society, 1991
- Fundamental studies of microscopic wetting on organic surfaces. 1. Formation and structural characterization of a self-consistent series of polyfunctional organic monolayersJournal of the American Chemical Society, 1990
- Spontaneously organized molecular assemblies. 4. Structural characterization of n-alkyl thiol monolayers on gold by optical ellipsometry, infrared spectroscopy, and electrochemistryJournal of the American Chemical Society, 1987
- A Fourier transform infrared spectroscopic study of the molecular interaction of cholesterol with 1,2-dipalmitoyl-sn-glycero-3-phosphocholineBiochimica et Biophysica Acta (BBA) - Biomembranes, 1980