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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1002/mrc.4091
|2 doi
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|a pubmed24n0798.xml
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|a eng
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|a de Almeida Martins, João P
|e verfasserin
|4 aut
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|a NMR molecular dynamics study of chromonic liquid crystals Edicol Sunset Yellow doped with salts
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|c 2014
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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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|2 rdacarrier
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|a Date Completed 22.05.2015
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|a Date Revised 25.09.2014
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Copyright © 2014 John Wiley & Sons, Ltd.
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|a We investigate the effect of monoatomic salts on the molecular dynamics in the nematic and isotropic phases formed by the chromonic liquid crystal Edicol Sunset Yellow. The study was carried out using proton nuclear magnetic resonance relaxometry. To analyse the effect of incorporation of additional sodium chloride or lithium chloride on the solutions' molecular dynamics, the spin-lattice relaxation time was measured for Larmor frequencies between 10 kHz and 100 MHz. In the nematic phase, the presence of additional sodium or lithium ions seems to contribute to an increase of the rotations/reorientations corr elation times in comparison with the mixture without extra ions. The collective motions detected by proton NMR relaxometry are associated with collective fluctuations of molecules within the stacks in the nematic phase and with order parameter fluctuations in the isotropic phase
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|a Journal Article
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|a NMR
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|a choromonics
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|a dynamics
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|a liquid crystals
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|a relaxation
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|a salt
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|a Chávez, Fabián Vaca
|e verfasserin
|4 aut
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|a Sebastião, Pedro J
|e verfasserin
|4 aut
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|i Enthalten in
|t Magnetic resonance in chemistry : MRC
|d 1985
|g 52(2014), 10 vom: 30. Okt., Seite 540-5
|w (DE-627)NLM098179667
|x 1097-458X
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|g volume:52
|g year:2014
|g number:10
|g day:30
|g month:10
|g pages:540-5
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|u http://dx.doi.org/10.1002/mrc.4091
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