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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1002/mrc.4819
|2 doi
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|a pubmed24n0973.xml
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|a eng
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|a Cadar, Calin
|e verfasserin
|4 aut
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|a Surface influence on the rotational and translational dynamics of molecules confined inside a mesoporous carbon xerogel
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|c 2019
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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 22.10.2019
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|a Date Revised 08.01.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2018 John Wiley & Sons, Ltd.
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|a Low-field nuclear magnetic resonance techniques are employed to extract information about the effects introduced by the interaction with the surface on the rotational and translational dynamics of molecules confined inside a mesoporous carbon xerogel. The molecules under study were water, cyclohexane, and hexane. They were chosen due to their different interaction strength with the carbonaceous matrix. Frequency dependent longitudinal relaxation measurements, using the fast field cycling technique, allowed extraction of the fractal dimension of the carbon xerogel surface. It was observed that the measured value is influenced by the molecule affinity to the surface. Diffusion measurements, using the pulse field gradient technique, have revealed that the stronger interaction with the surface of cyclohexane and hexane molecules leads to an increased diffusive tortuosity, as compared with water
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a NMR relaxation
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|a carbon xerogel
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|a diffusion
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|a fast field cycling
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|a fractal dimension
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|a porous media
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|a tortuosity
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|a Ardelean, Ioan
|e verfasserin
|4 aut
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|i Enthalten in
|t Magnetic resonance in chemistry : MRC
|d 1985
|g 57(2019), 10 vom: 30. Aug., Seite 829-835
|w (DE-627)NLM098179667
|x 1097-458X
|7 nnns
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|g volume:57
|g year:2019
|g number:10
|g day:30
|g month:08
|g pages:829-835
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|u http://dx.doi.org/10.1002/mrc.4819
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