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  Smectic order parameters via liquid crystal NMR spectroscopy: Application to a partial bilayer smectic A phase

Di Pietro, M. E., Celebre, G., De Luca, G., Zimmermann, H., & Cinacchi, G. (2012). Smectic order parameters via liquid crystal NMR spectroscopy: Application to a partial bilayer smectic A phase. The European Physical Journal E, 35(10): 112, pp. 1-10. doi:10.1140/epje/i2012-12112-0.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-11B9-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-11BA-8
Genre: Journal Article
Alternative Title : Smectic order parameters via liquid crystal NMR spectroscopy: Application to a partial bilayer smectic A phase

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EurPhysJE_35_2012_112.pdf (Any fulltext), 2MB
 
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 Creators:
Di Pietro, Maria Enrica, Author
Celebre, Giorgio, Author
De Luca, Giuseppina, Author
Zimmermann, Herbert1, Author              
Cinacchi, Giorgio, Author
Affiliations:
1Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700              

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 Abstract: Solute molecules were dissolved in the liquid crystal 4−cyano−4'−n−octyloxybiphenyl (8OCB), known to form a partial bilayer smectic−A phase. Through measurement of solutes' and solvent's orientational order parameters via nuclear magnetic resonance spectroscopy, and their analysis via a statistical thermodynamic density functional theory, values of the solvent's positional order parameters and solutes' positional−orientational distribution functions were obtained. Near to the transition to the nematic phase, the main positional order parameter of the smectic liquid crystal turned out to be comprised in the interval 0.4−0.6, though the quality of the fittings assuming the phase as nematic all across the temperature range investigated was only slightly worse. This may be ascribed to the looseness of the partial bilayer smectic structure. Solutes were found to preferentially lie in those regions where liquid crystal molecule terminal chains are located

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Language(s): eng - English
 Dates: 2012-04-132012-10-292012-10-292012-10-29
 Publication Status: Published in print
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 Rev. Method: Peer
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Title: The European Physical Journal E
  Other : Eur. Phys. J. E
Source Genre: Journal
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Publ. Info: Berlin : Springer
Pages: - Volume / Issue: 35 (10) Sequence Number: 112 Start / End Page: 1 - 10 Identifier: ISSN: 1292-8941
CoNE: https://pure.mpg.de/cone/journals/resource/954925624277_2