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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.5b00545
|2 doi
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|a eng
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|a Lemke, Sonja
|e verfasserin
|4 aut
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|a Reversible potential-induced switching of alkyl chain aggregation in octyl-triazatriangulenium adlayers on Au(111)
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|c 2015
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|a Text
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|a ƒaComputermedien
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|a Date Completed 12.05.2015
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|a Date Revised 17.03.2015
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a In situ scanning tunneling microscopy and cyclic voltammetry studies of self-assembled octyl-triazatriangulenium monolayers on Au(111) electrode surfaces in 0.1 M HClO4 reveal a complex surface phase behavior, involving two fast, highly reversible transitions between different ordered adlayer phases: With decreasing potential, the preadsorbed (√19 × √19)R23.4° adlayer first is converted into a (7√3 × 7√3) and then into a (2√3 × 2√3)R30° phase, corresponding to a stepwise increase in the local packing density of the molecules. The (7√3 × 7√3) → (2√3 × 2√3)R30° transition is accompanied by a reorientation of the peripheral octyl chains from a more planar to a close-packed vertical arrangement. This reversible potential-induced switching between a homogeneous adlayer of small vertical extension and a Au surface partially covered by islands of a compact hydrocarbon layer is attributed to changes in the adsorbate charge state and associated changes in the intermolecular interactions
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|a Journal Article
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|a Chang, Chi-Hao
|e verfasserin
|4 aut
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|a Jung, Ulrich
|e verfasserin
|4 aut
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| 700 |
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|a Magnussen, Olaf M
|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 31(2015), 10 vom: 17. März, Seite 3115-24
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|x 1520-5827
|7 nnas
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|g volume:31
|g year:2015
|g number:10
|g day:17
|g month:03
|g pages:3115-24
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|u http://dx.doi.org/10.1021/acs.langmuir.5b00545
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