Liquid Crystals, volume 40, issue 8, pages 1135-1145
Orientational order of guest molecules in aligned liquid crystal as measured by EPR and UV–vis techniques
Publication type: Journal Article
Publication date: 2013-05-10
Journal:
Liquid Crystals
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor: 2.2
ISSN: 02678292, 13665855
General Chemistry
Condensed Matter Physics
General Materials Science
Abstract
Orientational order of guest molecules in aligned liquid crystal 4-cyano-4′-pentylbiphenyl (5CB) is studied via optical dichroism and electron paramagnetic resonance (EPR) spectra measurements. The guest molecules used are bifunctional molecules bearing paramagnetic nitroxide group and photochromic azobenzene moiety. The bifunctional probe with rigidly bonded nitroxide and azobenzene moieties was found to align as a whole, while flexible long spacer between the moieties provides independent alignment for the nitroxide and azobenzene parts. Intermolecular interactions responsible for the alignment of azobenzene and nitroxide moieties of the probe molecules are discussed. The molecules with cis-configuration of azobenzene moiety are able to align in the liquid-crystalline medium, but to a lesser extent than the molecules with trans-configuration. Directions of orientational axes and characteristics of rotational mobility of spin probes are determined. Second, fourth and, in some cases, sixth rank order parameter values are found.
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Citations by publishers
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- We do not take into account publications that without a DOI.
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- Statistics recalculated weekly.
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Yankova T. et al. Orientational order of guest molecules in aligned liquid crystal as measured by EPR and UV–vis techniques // Liquid Crystals. 2013. Vol. 40. No. 8. pp. 1135-1145.
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Yankova T., Chumakova N., Pomogailo D. A., Vorobiev A. K. Orientational order of guest molecules in aligned liquid crystal as measured by EPR and UV–vis techniques // Liquid Crystals. 2013. Vol. 40. No. 8. pp. 1135-1145.
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TY - JOUR
DO - 10.1080/02678292.2013.795621
UR - https://doi.org/10.1080%2F02678292.2013.795621
TI - Orientational order of guest molecules in aligned liquid crystal as measured by EPR and UV–vis techniques
T2 - Liquid Crystals
AU - Yankova, T.
AU - Chumakova, N.A.
AU - Pomogailo, Daria A
AU - Vorobiev, Andrey Kh.
PY - 2013
DA - 2013/05/10 00:00:00
PB - Taylor & Francis
SP - 1135-1145
IS - 8
VL - 40
SN - 0267-8292
SN - 1366-5855
ER -
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@article{2013_Yankova
author = {T. Yankova and N.A. Chumakova and Daria A Pomogailo and Andrey Kh. Vorobiev},
title = {Orientational order of guest molecules in aligned liquid crystal as measured by EPR and UV–vis techniques},
journal = {Liquid Crystals},
year = {2013},
volume = {40},
publisher = {Taylor & Francis},
month = {may},
url = {https://doi.org/10.1080%2F02678292.2013.795621},
number = {8},
pages = {1135--1145},
doi = {10.1080/02678292.2013.795621}
}
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MLA
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Yankova, T., et al. “Orientational order of guest molecules in aligned liquid crystal as measured by EPR and UV–vis techniques.” Liquid Crystals, vol. 40, no. 8, May. 2013, pp. 1135-1145. https://doi.org/10.1080%2F02678292.2013.795621.