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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1021/la1051063
|2 doi
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|a pubmed24n0699.xml
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|a DE-627
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|e rakwb
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|a eng
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|a Domi, Yasuhiro
|e verfasserin
|4 aut
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|a Strong inclusion of inorganic anions into β-cyclodextrin immobilized to gold electrode
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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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|2 rdacarrier
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|a Date Completed 29.12.2011
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|a Date Revised 15.11.2012
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2011 American Chemical Society
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|a The inclusion of inorganic anions such as SO(4)(2-), NO(3)(-), and HPO(4)(2-) into the cavity of β-cyclodextrin monolayers on Au was examined by X-ray photoelectron spectroscopy (XPS), a quartz crystal microbalance (QCM), and chronocoulometric measurements of the competitive inclusion with ferrocene. The inclusion amounts of ferrocence in 0.2 M Na(2)SO(4), NaNO(3), and Na(2)HPO(4) solutions were less than 6% of the adsorption amount of β-cyclodextrin on Au, resulting in the apparent inhibition of the ferrocene redox reaction. The surface association constants of these anions reached about 10 on a logarithmic scale and were much higher than those for the inclusion of common organic guest compounds. A stronger anion inclusion was also demonstrated by the QCM response corresponding to the replacement of a preincluded organic guest with sulfate upon the injection of the sulfate solution. Quantitative analysis of the XPS data suggested a 1:1 association for each of these anions per surface β-cyclodextrin. There was no detectable inclusion for ClO(4)(-), Cl(-), and Br(-)
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|a Journal Article
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|a Anions
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|a Nitrates
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|a Phosphates
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|a Sulfates
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|a beta-Cyclodextrins
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|a Gold
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|a 7440-57-5
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|a Ikeura, Kentaro
|e verfasserin
|4 aut
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|a Okamura, Kazumasa
|e verfasserin
|4 aut
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|a Shimazu, Katsuaki
|e verfasserin
|4 aut
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|a Porter, Marc D
|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), 17 vom: 06. Sept., Seite 10580-6
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:27
|g year:2011
|g number:17
|g day:06
|g month:09
|g pages:10580-6
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|u http://dx.doi.org/10.1021/la1051063
|3 Volltext
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