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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1021/la202978d
|2 doi
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|a pubmed24n0706.xml
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|a eng
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|a Kycia, Annia H
|e verfasserin
|4 aut
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|a Electrochemical and STM studies of 1-thio-β-D-glucose self-assembled on a Au(111) electrode surface
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 16.02.2012
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|a Date Revised 21.11.2013
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a In this study, a Au(111) electrode is functionalized with a monolayer of 1-thio-β-D-glucose (β-Tg), producing a hydrophilic surface. A monolayer of β-Tg was formed on a Au(111) surface by either (1) potential-assisted deposition with the thiol in a supporting electrolyte or (2) passive incubation of a gold substrate in a thiol-containing solution. For each method, the properties of the β-Tg monolayer were investigated using cyclic voltammetry (CV), differential capacitance (DC), and chronocoulometry. In addition, electrochemical scanning tunneling microscopy (EC-STM) was used to obtain images of the self-assembled monolayer with molecular resolution. Potential-assisted assembly of β-Tg onto a Au(111) electrode surface was found to be complicated by oxidation of β-Tg molecules. The EC-STM images revealed formation of a passive layer containing honeycomb-like domains characteristic of a formation of S(8) rings, indicating the S-C bond may have been cleaved. In contrast, passive self-assembly of thioglucose from a methanol solution was found to produce a stable, disordered monolayer of β-Tg. Since the passive assembly method was not complicated by the presence of a faradaic process, it is the method of choice for modifying the gold surface with a hydrophilic monolayer
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Electrolytes
|2 NLM
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|a Gold
|2 NLM
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|a 7440-57-5
|2 NLM
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|a 1-thioglucose
|2 NLM
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|a 7534-35-2
|2 NLM
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|a Glucose
|2 NLM
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|a IY9XDZ35W2
|2 NLM
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| 700 |
1 |
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|a Sek, Slawomir
|e verfasserin
|4 aut
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|a Su, Zhangfei
|e verfasserin
|4 aut
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|a Merrill, A Rod
|e verfasserin
|4 aut
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|a Lipkowski, Jacek
|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 1992
|g 27(2011), 21 vom: 01. Nov., Seite 13383-9
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:27
|g year:2011
|g number:21
|g day:01
|g month:11
|g pages:13383-9
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|u http://dx.doi.org/10.1021/la202978d
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