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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.8b00660
|2 doi
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|a pubmed24n0947.xml
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|a (DE-627)NLM284324868
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|a (NLM)29786433
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Weger, Lukas
|e verfasserin
|4 aut
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| 245 |
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|a Polymer Diffusion in the Interphase Between Surface and Solution
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|c 2018
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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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| 500 |
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|a Date Completed 17.09.2018
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|a Date Revised 17.09.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Total internal reflection fluorescence correlation spectroscopy (TIR-FCS) is applied to study the self-diffusion of poly(ethylene glycol) solutions in the presence of weakly attractive interfaces. Glass coverslips modified with aminopropyl- and propyl-terminated silanes are used to study the influence of solid surfaces on polymer diffusion. A model of three phases of polymer diffusion allows to describe the experimental fluorescence autocorrelation functions. Besides the two-dimensional diffusion of adsorbed polymer on the substrate and three-dimensional free diffusion in bulk solution, a third diffusion time scale is observed with intermediate diffusion times. This retarded three-dimensional diffusion in the solution is assigned to the long-range effects of solid surfaces on diffusional dynamics of polymers. The respective diffusion constants show Rouse scaling ( D ∼ N-1), indicating a screening of hydrodynamic interactions by the presence of the surface. Hence, the presented TIR-FCS method proves to be a valuable tool to investigate the effect of surfaces on polymer diffusion beyond the first adsorbed polymer layer on the 100 nm length scale
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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| 700 |
1 |
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|a Weidmann, Monika
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ali, Wael
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hildebrandt, Marcus
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gutmann, Jochen S
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hoffmann-Jacobsen, Kerstin
|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 34(2018), 24 vom: 19. Juni, Seite 7021-7027
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:34
|g year:2018
|g number:24
|g day:19
|g month:06
|g pages:7021-7027
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|u http://dx.doi.org/10.1021/acs.langmuir.8b00660
|3 Volltext
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