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  Conformational order in oligo(ethylene glycol)-terminated self-assembled monolayers on gold determined by soft X-ray absorption

Zwahlen, M., Herrwerth, S., Eck, W., Grunze, M., & Hähner, G. (2003). Conformational order in oligo(ethylene glycol)-terminated self-assembled monolayers on gold determined by soft X-ray absorption. Langmuir, 19(22), 9305-9310. doi:10.1021/la0350610.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0001-BFA8-B Version Permalink: https://hdl.handle.net/21.11116/0000-0001-BFA9-A
Genre: Journal Article

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Langmuir_19_2003_9305.pdf (Any fulltext), 99KB
 
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 Creators:
Zwahlen, Mathias, Author
Herrwerth, Sascha, Author
Eck, Wolfgang, Author
Grunze, Michael1, Author           
Hähner, Georg, Author
Affiliations:
1Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society, ou_2364731              

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 Abstract: Near-edge X-ray absorption fine structure (NEXAFS) measurements were performed on self-assembled monolayers (SAMs) of oligo(ethylene glycol) (OEG)-terminated alkanethiols adsorbed on gold. Films with a varying number of EG units were investigated. By comparing the experimental results with predictions for an “ideal film structure”, the degree of conformational orientation can be determined. Our results are consistent with earlier findings that the ethylene glycol units adopt a mixture of helical and amorphous conformations and allow it to quantify the maximum possible fraction of shorter oligomers displaying the helical conformation. The experiments were performed under high-vacuum conditions, thereby eliminating the effects of water on the conformation of the EG units. A significant amount of molecules in the films displays amorphous conformations.

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Language(s): eng - English
 Dates: 2003-06-162003-07-282003-10-03
 Publication Status: Issued
 Pages: 6
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 Rev. Type: Peer
 Identifiers: DOI: 10.1021/la0350610
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Title: Langmuir
Source Genre: Journal
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Publ. Info: Columbus, OH : American Chemical Society
Pages: - Volume / Issue: 19 (22) Sequence Number: - Start / End Page: 9305 - 9310 Identifier: ISSN: 0743-7463
CoNE: https://pure.mpg.de/cone/journals/resource/954925541194