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231223s2009 xx |||||o 00| ||eng c |
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|a 10.1021/la803453v
|2 doi
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|a pubmed25n0629.xml
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|a eng
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|a Viswanathan, Kalpana
|e verfasserin
|4 aut
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|a Hydrogen bonding between adenine-modified surfaces and terminal thymine-functionalized polystyrene
|b influence of the surface adenine concentration on polymer recognition
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|c 2009
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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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|a Date Completed 17.08.2009
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a The influence of the surface adenine concentration on the adhesion of terminal thymine-functionalized polystyrene (PS-thymine) to a silicon surface that was modified with adenine-functionalized triethoxysilane (ADPTES) was investigated. The surface adenine concentration was systematically varied via co-deposition of a non-hydrogen-bonding diluent. Two different silanes, i.e., 2-diphenylphosphinoethyl triethoxysilane (DPPETES) and 3-mercaptopropyl triethoxysilane (MPTES), were used as the diluents. The compositions of the silicon surfaces modified with different ratios of ADPTES/DPPETES were determined using X-ray photoelectron spectroscopy (XPS) and agreed well with the ADPTES/DPPETES molar ratios in solution. XPS and water contact-angle measurements revealed that modification of surfaces exclusively with the diluents or with a very low concentration of adenine did not result in significant PS-thymine attachment. However, as the adenine concentration on the surface increased, PS-thymine adsorption also increased, passing through a maximum before decreasing with a further increase in the adenine concentration. Surfaces modified exclusively with adenine showed negligible polymer attachment. A similar non-monotonic trend in PS-thymine adsorption was observed for surfaces that were modified with a mixture of ADPTES and MPTES, where PS-thymine adsorption was found to go through a maximum at a particular adenine concentration. A further increase in adenine concentration led to decreased polymer adsorption, and an exclusive presence of adenine was again found to promote negligible polymer adsorption
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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 Polystyrenes
|2 NLM
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|a Adenine
|2 NLM
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|a JAC85A2161
|2 NLM
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|a Thymine
|2 NLM
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|a QR26YLT7LT
|2 NLM
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|a Long, Timothy E
|e verfasserin
|4 aut
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|a Ward, Thomas C
|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 1985
|g 25(2009), 12 vom: 16. Juni, Seite 6808-12
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnas
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| 773 |
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|g volume:25
|g year:2009
|g number:12
|g day:16
|g month:06
|g pages:6808-12
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|u http://dx.doi.org/10.1021/la803453v
|3 Volltext
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