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231223s2010 xx |||||o 00| ||eng c |
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7 |
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|a 10.1021/la904465t
|2 doi
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|a eng
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| 100 |
1 |
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|a Ozkaya, Berkem
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Single molecule desorption studies on immobilized nanoclay particle surfaces
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|c 2010
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 08.09.2010
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|a Date Revised 25.05.2010
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a AFM-based single molecule force spectroscopy was performed on sheetlike inorganic particles of Na-montmorillonite to study the pH-dependent adsorption and desorption behavior of polyelectrolytes in aqueous solutions. Polyallylamine macromolecules were covalently attached on gold-coated AFM cantilevers. Heterogeneous surfaces were formed by immobilizing the nanoclay sheets on mica-stripped ultraflat Au(111) surfaces using aminothiol chemistry. Because of the constant surface charge of the particles over a wide pH range, polymer line charge density was the only parameter that affected the adsorption and desorption behavior when the ionic concentration was kept constant. Polarization modulation infrared-reflection absorption spectroscopy (PM-IRRAS) was performed on cast polyallylamine films to study the pH-dependent charge density of polyallylamine molecules. A good correlation was found between the line charge density and the adsorption characteristics of polyallylamine
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|a Journal Article
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1 |
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|a Ozcan, Ozlem
|e verfasserin
|4 aut
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1 |
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|a Thissen, Peter
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Grundmeier, Guido
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 26(2010), 11 vom: 01. Juni, Seite 8155-60
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|g day:01
|g month:06
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