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231223s2009 xx |||||o 00| ||eng c |
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|a 10.1021/la901614p
|2 doi
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|a pubmed24n0637.xml
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|a (NLM)19725566
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|a DE-627
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| 041 |
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|a eng
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| 100 |
1 |
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|a Giner, Ignacio
|e verfasserin
|4 aut
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|a Molecular arrangement in Langmuir and Langmuir-Blodgett films of a mesogenic bent-core carboxylic acid
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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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|2 rdacarrier
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|a Date Completed 25.01.2010
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|a Date Revised 13.10.2009
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a A different alternative to previous research on Langmuir and Langmuir-Blodgett (LB) films of bent-core liquid crystals is reported in this work. A bent-shaped molecule wearing a terminal carboxylic group has been used to obtain monomolecular films with their long molecular axis almost perpendicular to the aqueous surface. Langmuir films at the air-liquid interface (pH=9) have been characterized by a combination of surface pressure and surface potential versus area per molecule isotherms, Brewster angle microscopy, and ultraviolet reflection spectroscopy. A condensed phase is reached at surface pressures up to 20 mN x m-1. In this condensed phase, molecules are packed forming H-aggregates with a well-defined molecular orientation. Langmuir films have been transferred onto quartz and silicon substrates and characterized by means of UV-vis spectroscopy and XRR. The transference is Z-type, with a constant deposition of the monolayers. The total LB monolayer film thickness is evaluated to be about 5.8 nm, which is in good agreement with the deduced orientation at the air-liquid interface as well as with the lamellar order observed within the solid obtained by cooling the sample from the mesophase
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4 |
|a Journal Article
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1 |
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|a Gascón, Ignacio
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Vergara, Jorge
|e verfasserin
|4 aut
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| 700 |
1 |
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|a López, M Carmen
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ros, M Blanca
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Royo, Félix M
|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 25(2009), 20 vom: 20. Okt., Seite 12332-9
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:25
|g year:2009
|g number:20
|g day:20
|g month:10
|g pages:12332-9
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| 856 |
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|u http://dx.doi.org/10.1021/la901614p
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