Evidence for Cleavage of Disulfides in the Self-Assembled Monolayer on Au(111)
Following the proposal of a new structural model by Fenter et al. (Science 1994, 266, 1216), several reports have indicated the existence of dimers in a self-assembled monolayer (SAM) film on Au (111). We synthesized an asymmetric disulfide with hydrocarbon and fluorocarbon chains, and observed phas...
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Published in | Langmuir Vol. 13; no. 13; pp. 3261 - 3265 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Washington, DC
American Chemical Society
25.06.1997
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Subjects | |
Online Access | Get full text |
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Summary: | Following the proposal of a new structural model by Fenter et al. (Science 1994, 266, 1216), several reports have indicated the existence of dimers in a self-assembled monolayer (SAM) film on Au (111). We synthesized an asymmetric disulfide with hydrocarbon and fluorocarbon chains, and observed phase-separated domains in the SAM film with force microscopy after annealing at 100 °C for 8 h. The phase separation clearly shows the cleavage of the S−S bond of the disulfide in the film. Although it cannot be confirmed whether the phase-separated domains consist of exchanged dimers or monomers (thiolates), we obtained new insights into the stability and diffusion of molecules in SAM films. |
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Bibliography: | Abstract published in Advance ACS Abstracts, May 15, 1997. ark:/67375/TPS-3XZJS8FG-D istex:ABADACBD41B0057596C8B901D379715CA1C54124 |
ISSN: | 0743-7463 1520-5827 |
DOI: | 10.1021/la962022y |