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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1021/la300775n
|2 doi
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|a pubmed24n0726.xml
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|a DE-627
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|e rakwb
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|a eng
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|a Mansueto, Markus
|e verfasserin
|4 aut
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|a Triphenylene silanes for direct surface anchoring in binary mixed self-assembled monolayers
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|c 2012
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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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|a Date Completed 06.09.2012
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|a Date Revised 05.06.2012
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a New triphenylene-based silanes 2-(ω-(chlorodimethylsilyl)-n-alkyl)-3,6,7,10,11-penta-m-alkoxytriphenylene 4 (Tm-Cn) with n = 8 or 9 and m = 7, 8, 9, 10, or 11 were synthesized, and their self-assembly behavior in the liquid state and at glass and silicon oxide surfaces was investigated. The mesomorphic properties of triphenylene silanes 4 (Tm-Cn) and their precursors 3 (Tm-Cn) were determined by differential scanning calorimetry (DSC), polarizing optical microscopy (POM), and X-ray diffraction. From the small-angle X-ray scattering (SAXS) regime, a preferential discotic lamellar mesophase can be deduced, and wide-angle X-ray scattering (WAXS) highlights the liquid-like characteristics of the alkyl side chains. To transfer these bulk structural properties to thin films, self-assembled monolayers (SAMs) were obtained by adsorption from solution and characterized by water contact angle measurements, null ellipsometry, and atomic force microscopy (AFM). Employing the concentration as an additional degree of freedom, binary SAMs of 2-(ω-(chlorodimethylsilyl)-undecyl)-3,6,7,10,11-penta-decyloxytriphenylene 4 (T10-C11) were coassembled with chlorodecyldimethylsilane or chlorodimethyloctadecylsilane, and their capability as model systems for organic templating was evaluated. The structure of the resulting binary mixed SAMs was analyzed by water contact angle measurements, null ellipsometry, and X-ray reflectivity (XRR) in combination with theoretical modeling by a multidimensional Parratt algorithm and AFM. The composition dependence of film thickness and roughness can be explained by a microscopic model including the steric hindrance of the respective molecular constituents
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|a Journal Article
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|a Sauer, Sven
|e verfasserin
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|a Butschies, Martin
|e verfasserin
|4 aut
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|a Kaller, Martin
|e verfasserin
|4 aut
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|a Baro, Angelika
|e verfasserin
|4 aut
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|a Woerner, Rebecca
|e verfasserin
|4 aut
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|a Hansen, Nis Hauke
|e verfasserin
|4 aut
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|a Tovar, Guenter
|e verfasserin
|4 aut
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|a Pflaum, Jens
|e verfasserin
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|a Laschat, Sabine
|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 1999
|g 28(2012), 22 vom: 05. Juni, Seite 8399-407
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:28
|g year:2012
|g number:22
|g day:05
|g month:06
|g pages:8399-407
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|u http://dx.doi.org/10.1021/la300775n
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