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231223s2005 xx ||||| 00| ||eng c |
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|a (NLM)16042493
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Gong, Haofei
|e verfasserin
|4 aut
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| 245 |
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|a Interaction and adhesion properties of polyelectrolyte multilayers
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| 264 |
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|c 2005
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 22.06.2006
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|a Date Revised 26.07.2005
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a The growth, morphology, and interaction/adhesion properties of supported poly(sodium 4-styrenesulfonate)/poly(allylamine hydrochloride) (PSS/PAH) and DNA/PAH multilayers were investigated by means of surface plasmon resonance spectroscopy, atomic force microscope (AFM) imaging, and AFM-related force measurements. Multilayers were assembled on a prelayer of poly(ethylenimine) (PEI) both with and without drying. SPR results showed a linear growth of the assembly in the case of PSS/PAH multilayers and nonlinear growth for DNA/PAH multilayers. Measurements of forces acting between a bare glass sphere and a multilayer-coated surface indicated repulsive or attractive forces, depending on surface charge, which suggests that, on approach, electrostatic forces dominate. On separation, we observed large pull-off forces in the case of positively charged multilayers and weak pull-off forces in the case negatively charged multilayers. Multiple adhesions and plateau regions observed on separation were interpreted in terms of a bridging of multiple polymer chains between the glass particle and the multilayer and a stretching of the polyelectrolyte loops. The dependence of the pull-off force on the number of deposited layers shows regular oscillations
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|a Journal Article
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1 |
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|a Garcia-Turiel, Javier
|e verfasserin
|4 aut
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1 |
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|a Vasilev, Krasimir
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Vinogradova, Olga I
|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 21(2005), 16 vom: 02. Aug., Seite 7545-50
|w (DE-627)NLM098181009
|x 1520-5827
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| 773 |
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|g volume:21
|g year:2005
|g number:16
|g day:02
|g month:08
|g pages:7545-50
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| 952 |
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|d 21
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|e 16
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