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Dataset from the analysis of dielectric study for liquid crystal dimers based on thioether cyanobiphenyl (CBS5SCB, CBS7SCB and CBS5OCB, CBS7OCB) that form nematic twist-bend phase.

Version 1.0

Merkel, Katarzyna; Arakawa, Yuki; Kocot, Antoni, 2023, "Dataset from the analysis of dielectric study for liquid crystal dimers based on thioether cyanobiphenyl (CBS5SCB, CBS7SCB and CBS5OCB, CBS7OCB) that form nematic twist-bend phase.", https://doi.org/10.18150/MPHGUX, RepOD, V1

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Description

This dataset contains raw data from the analyses published in the article entitled „Dielectric Study of Liquid Crystal Dimers: Probing the Orientational Order and Molecular Interactions in Nematic and Twist-Bend Nematic Phases” in Journal of Physical Chemistry B 2023, 127, 7082−7090. https://doi.org/10.1021/acs.jpcb.3c03496 The data include the raw dielectric spectra for symmetric (CBS5SCB, CBS7SCB) and asymmetric (CBS5OCB, CBS7OCB) dimers as a function of temperature and frequencies of the measuring field (frequencies from 10 to 2× 10 9 Hz). The files from dielectric measurements are in a file with the extension data. The individual file denotes the measurement at a particular temperature, the first column contains the frequencies, the second the real permittivity, and the third the imaginary permittivity. Temperatures in kelvins are given in the header of the first column.

(2023)
Subject
Chemistry; Engineering; Physics
Keyword

dielectric spectroscopy, intermolecular interactions, liquid crystal dimers, twist–bend phase, parameter orders

Related Publication

Antoni Kocot, Małgorzata Czarnecka, Yuki Arakawa, and Katarzyna Merkel (2023). Dielectric Study of Liquid Crystal Dimers: Probing the Orientational Order and Molecular Interactions in Nematic and Twist-Bend Nematic Phases, The Journal of Physical Chemistry B 2023 127 (31), 7082-7090
DOI: 10.1021/acs.jpcb.3c03496 https://doi.org/10.1021/acs.jpcb.3c03496 doi: 10.1021/acs.jpcb.3c03496

CC0 Creative Commons Zero 1.0 CC0 Creative Commons Zero 1.0

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1 to 8 of 8 Files
derivatives of permitivity_CBS5SCB.zip
ZIP Archive - 93.3 KB - Dec 8, 2023 - 1 Download
MD5: abb53143d879d7c0a2981797fae1f526
License: CC0 Creative Commons Zero 1.0
For better deconvolution of the modes in the dielectric spectra, we used permittivity derivatives vs. ln(f). We used the OrginLab program (OriginPro 2023) for analysis the dielectric spectra for symmetric dimer CBS5SCB. The file in “opju” extension contain derivatives of the real permittivity vs frequency for different temperatures, The frequency range spanning from 10 Hz to 1 GH and temperatures range from 389K to 316K, in cooling cycle with rate 1  /min.
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derivatives of permittivity_CBS7SCB.zip
ZIP Archive - 141.3 KB - Dec 8, 2023 - 1 Download
MD5: 29dca47d13df42654797885bc40e58f8
License: CC0 Creative Commons Zero 1.0
For better deconvolution of the modes in the dielectric spectra, we used permittivity derivatives vs. ln(f). We used the OrginLab program (OriginPro 2023) for analysis the dielectric spectra for symmetric dimer CBS7SCB. The file in “opju” extension contain derivatives of the real permittivity vs frequency for different temperatures, The frequency range spanning from 10 Hz to 1GH and temperatures range from 389K to 316K, in cooling cycle with rate 1  /min.
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Eps_asymetric dimers.zip
ZIP Archive - 50.2 KB - Dec 8, 2023 - 1 Download
MD5: 5352ccc60b4ec093e2b8d7b1f608f606
License: CC0 Creative Commons Zero 1.0
We used the OrginLab program (OriginPro 2023) for analysis the dielectric spectra. The file in “opju” extension contain perpendicular electric permittivity (epsilon) for planar cell vs temperatures for frequency equal 1kHz for asymmetric dimers (CBS5OCB and CBS7OCB). Data descriptions are provided in column headings
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Eps_symetric dimers.zip
ZIP Archive - 37.8 KB - Dec 8, 2023 - 2 Downloads
MD5: 015c2def458c9b0a156a2deb06b6b428
License: CC0 Creative Commons Zero 1.0
We used the OrginLab program (OriginPro 2023) for analysis the dielectric spectra. The file in “opju” extension contain perpendicular electric permittivity (epsilon) for planar cell vs temperatures for frequency equal 1kHz for symmetric dimers (CBS5SCB and CBS7SCB). Data descriptions are provided in column headings
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CBS5OCB.zip
ZIP Archive - 35.7 KB - Dec 8, 2023 - 2 Downloads
MD5: c536951ecf07ace8fcdc1af463e10ca2
License: CC0 Creative Commons Zero 1.0
The catalogue contain the raw dielectric data for asymmetric (CBS5OCB) dimer. TheCBS5OCB dimer consist with the two mesogenic group based on cyanobiphenyl and two bridge connecting the mesogen and aliphatic linker contains a sulphur atom in one side and oxygen in other one , the linker - contains 5 carbon atoms in the aliphatic chain. Dielectric spectra as a function of temperature and frequencies of the measuring field (frequencies from 10 to 2× 109 Hz). Dielectric spectra are in a files with the extension data. The individual file denotes the measurement at a particular temperature, the first column contains the frequencies, the second the real permittivity, and the third the imaginary permittivity. These measurements were performed using two impedance/network analysers, specifically the HP4I92A and HP4I95A. Data are for a planar aligned sample.
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CBS5SCB.zip
ZIP Archive - 105.1 KB - Dec 8, 2023 - 1 Download
MD5: cde294dbc6ab2abf6f8f3a1bb322bb46
License: CC0 Creative Commons Zero 1.0
The catalogue contain the raw dielectric data for symmetric (CBS5SCB) dimer. The CBS5SCB dimer consist with the two mesogenic group based on cyanobiphenyl and two bridge connecting the mesogen and aliphatic linker contains a sulphur atoms on both sides, the linker - contains 5 carbon atoms in the aliphatic chain. Dielectric spectra as a function of temperature and frequencies of the measuring field (frequencies from 10 to 2×109 Hz). Dielectric spectra are in a files with the extension data. The individual file denotes the measurement at a particular temperature, the first column contains the frequencies, the second the real permittivity, and the third the imaginary permittivity. These measurements were performed using two impedance/ network analysers, specifically the HP4I92A and HP4I95A. Data are for a planar aligned sample.
Download
CBS7OCB.zip
ZIP Archive - 22.5 KB - Dec 8, 2023 - 1 Download
MD5: 0af669d9706d40c414db6cf3b899205d
License: CC0 Creative Commons Zero 1.0
The catalogue contain the raw dielectric data for asymmetric (CBS7OCB) dimer. The CBS7OCB dimer consist with the two mesogenic group based on cyanobiphenyl and two bridge connecting the mesogen and aliphatic linker contains a sulphur atom in one side and oxygen in other one , the linker - contains 7 carbon atoms in the aliphatic chain. Dielectric spectra as a function of temperature and frequencies of the measuring field (frequencies from 10 to 2× 109 Hz). Dielectric spectra are in a files with the extension data. The individual file denotes the measurement at a particular temperature, the first column contains the frequencies, the second the real permittivity, and the third the imaginary permittivity. These measurements were performed using two impedance/network analysers, specifically the HP4I92A and HP4I95A. Data are for a planar aligned sample.
Download
CBS7SCB.zip
ZIP Archive - 47.5 KB - Dec 8, 2023 - 1 Download
MD5: de759228d93f1afd7a784016fb622e80
License: CC0 Creative Commons Zero 1.0
The catalogue contain the raw dielectric data for symmetric (CBS7SCB) dimer. The CBS7SCB dimer consist with the two mesogenic group based on cyanobiphenyl and two bridge connecting the mesogen and aliphatic linker contains a sulphur atoms on both sides, the linker - contains 7 carbon atoms in the aliphatic chain. Dielectric spectra as a function of temperature and frequencies of the measuring field (frequencies from 10 to 2× 109 Hz). Dielectric spectra are in a files with the extension data. The individual file denotes the measurement at a particular temperature, the first column contains the frequencies, the second the real permittivity, and the third the imaginary permittivity. These measurements were performed using two impedance/ network analysers, specifically the HP4I92A and HP4I95A. Data are for a planar aligned sample.
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