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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1021/la302601x
|2 doi
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|a DE-627
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|e rakwb
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|a eng
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|a Ista, Linnea K
|e verfasserin
|4 aut
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|a Interfacial tension analysis of oligo(ethylene glycol)-terminated self-assembled monolayers and their resistance to bacterial attachment
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|c 2012
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|a Text
|b txt
|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 10.01.2013
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|a Date Revised 01.12.2018
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a The fouling resistance of oligo(ethylene glycol) (OEG)-terminated self-assembled monolayers (SAMs) of alkanethiolates on gold has been well established. Although hydration of the OEG chains seems key to OEG-SAM resistance to macromolecular adsorption and cellular attachment, the details of how hydration prevents biofouling have been inferred largely through computational methods. Because OEG-SAMs of different lengths exhibit differing degrees of fouling resistance, the interactions between water and OEG-SAMs leading to fouling resistance can be deduced by comparing the properties of fouling and nonfouling OEG-SAMs. While all OEG-SAMs had similar water contact angles, contact angles taken with glycerol were able to individuate between different OEG-SAMs and between fouling and nonfouling OEG-SAMs. Subsequent estimation of surface and interfacial tension using a colloidal model showed that nonfouling surfaces are associated with an increased negative interfacial tension between those OEG-SAMs that resisted attachment and water. Further analysis of this interfacial tension experimentally confirmed current mathematical models that cite OEG-water hydrogen-bond formation as a driving force behind short-term fouling resistance. Finally, we found a correlation between solid-water interfacial tension and packing density and molecular density of ethylene glycol
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Alkanes
|2 NLM
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|a Colloids
|2 NLM
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|a Water
|2 NLM
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|a 059QF0KO0R
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|a Polyethylene Glycols
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|a Gold
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|a 7440-57-5
|2 NLM
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|a López, Gabriel P
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 28(2012), 35 vom: 04. Sept., Seite 12844-50
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|x 1520-5827
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|g volume:28
|g year:2012
|g number:35
|g day:04
|g month:09
|g pages:12844-50
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|u http://dx.doi.org/10.1021/la302601x
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