Chemically transformable configurations of mercaptohexadecanoic acid self-assembled monolayers adsorbed on Au(111)
Carboxyl-terminated self-assembled monolayers (SAMs) are commonly used in a variety of applications, with the assumption that the molecules form well-ordered monolayers. In this work, near-edge X-ray absorption fine structure measurements verify that well-ordered monolayers can be formed using aceti...
| Veröffentlicht in: | Langmuir : the ACS journal of surfaces and colloids. - 1999. - 20(2004), 7 vom: 30. März, Seite 2746-52 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2004
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| Zugriff auf das übergeordnete Werk: | Langmuir : the ACS journal of surfaces and colloids |
| Schlagworte: | Journal Article Research Support, U.S. Gov't, Non-P.H.S. 16-mercaptohexadecanoic acid Acetates Palmitic Acids Ethanol 3K9958V90M Gold 7440-57-5 |
| Zusammenfassung: | Carboxyl-terminated self-assembled monolayers (SAMs) are commonly used in a variety of applications, with the assumption that the molecules form well-ordered monolayers. In this work, near-edge X-ray absorption fine structure measurements verify that well-ordered monolayers can be formed using acetic acid in the solvent. Disordered monolayers with unbound molecules present in the film result using only ethanol. A stark reorientation occurs upon deprotonation of the end group by rinsing in a KOH solution. This reorientation of the end group is reversible with tilted-over, hydrogen-bound carboxyl groups while the carboxylate ion end groups are upright. C(1s) photoemission shows that SAMs formed and rinsed with acetic acid in ethanol have protonated end groups, while SAMs formed without acetic acid have a large fraction of carboxylate-terminated molecules |
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| Beschreibung: | Date Completed 20.06.2005 Date Revised 26.10.2019 published: Print Citation Status MEDLINE |
| ISSN: | 1520-5827 |