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231223s2004 xx ||||| 00| ||eng c |
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Mourran, Ahmed
|e verfasserin
|4 aut
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| 245 |
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|a Surface orientation of 3,4,5-tris-substituted benzoic acid amphiphiles
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| 264 |
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|c 2004
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| 336 |
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|a Text
|b txt
|2 rdacontent
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| 337 |
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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| 338 |
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|a Band
|b nc
|2 rdacarrier
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| 500 |
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|a Date Completed 03.02.2006
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|a Date Revised 26.10.2019
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Regarding the molecular orientation on flat substrates, thin films have been studied of a series of wedge-shaped molecules (3,4,5-tris-substituted benzoate-benzo crown ether compounds) consisting of a hydrophobic outer rim and a polar group at the thin end which form columnar mesomorphic and crystalline structures. For most substrates studied here, autophobic dewetting is demonstrated to be caused by the formation of a monomolecular adlayer in which the molecules are oriented normal to the substrate surface with the hydrophobic tails directed away from the substrate. For thick films, this adlayer is shown to cause an "in-plane" orientation of the axis of the columnar state. An ordered in-plane oriented adlayer is observed only for highly ordered pyrolytic graphite as the substrate. In this case, specific interactions with the substrate cause formation of a well-ordered 2D pattern that might favor homeotropic orientation of the columnar structures but has to be optimized by further structural variation. The structure of the adsorbed monolayer is elucidated by combining contact angle measurements, plasmon resonance spectroscopy, and optical and scanning tunneling microscopy
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|a Journal Article
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1 |
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|a Beginn, Uwe
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zipp, Gabriela
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Möller, Martin
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1985
|g 20(2004), 3 vom: 03. Feb., Seite 673-9
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnas
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| 773 |
1 |
8 |
|g volume:20
|g year:2004
|g number:3
|g day:03
|g month:02
|g pages:673-9
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| 952 |
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|d 20
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|h 673-9
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