The determination of the phase transition temperatures of a semifluorinated liquid crystalline biphenyl ester by impedance spectroscopy as an alternative method

Alptekin Yıldız; Nimet Yilmaz Canli; Gürkan Karanlık; Hale Ocak; Mustafa Okutan; Belkız Bilgin Eran

doi:10.1016/j.physb.2016.10.001

The determination of the phase transition temperatures of a semifluorinated liquid crystalline biphenyl ester by impedance spectroscopy as an alternative method

Alptekin Yıldız, Nimet Yilmaz Canli^*, Gürkan Karanlık, Hale Ocak, Mustafa Okutan, Belkız Bilgin Eran

^*Corresponding author for this work

Aviation Institute

Yildiz Technical University

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Dielectric spectroscopy (DS) is a very powerful and important for better understanding of the molecular dynamics and relaxation phenomena in liquid crystals. The dielectric and impedance characteristics Ethyl 4-(7,7,8,8,9,9,10,10,10-nonafluorodecyloxy)biphenyl-4′-carboxylate (ENBC) liquid crystal have been analyzed over the frequency range of 100 Hz to MHz in the temperature region from room temperature to 180 °C. The compound ENBC shows enantiotropic a smectic mesophase in a wide temperature range. The phase transition temperatures T (°C) of the liquid crystal ENBC, which were characterized by Differential Scanning Calorimetry (DSC), have been verified by the dielectric measurements and conductivity mechanisms of the ENBC. The activation energies for some selected angular frequencies have also been calculated.

Original language	English
Pages (from-to)	152-156
Number of pages	5
Journal	Physica B: Condensed Matter
Volume	503
DOIs	https://doi.org/10.1016/j.physb.2016.10.001
Publication status	Published - 15 Dec 2016

Bibliographical note

Publisher Copyright:
© 2016 Elsevier B.V.

Funding

This research has been supported by Yildiz Technical University Scientific Research Projects Coordination Department with the Project Number: 2015-01-02-DOP08 .

Funders	Funder number
Yildiz Teknik Üniversitesi	2015-01-02-DOP08

Keywords

Differential scanning calorimetry (DSC)
Impedance spectroscopy (IS)
Liquid crystal
Phase transition temperature

Access to Document

10.1016/j.physb.2016.10.001

Cite this

@article{4e86649c525d4b4bab1bf514ec8ca017,

title = "The determination of the phase transition temperatures of a semifluorinated liquid crystalline biphenyl ester by impedance spectroscopy as an alternative method",

abstract = "Dielectric spectroscopy (DS) is a very powerful and important for better understanding of the molecular dynamics and relaxation phenomena in liquid crystals. The dielectric and impedance characteristics Ethyl 4-(7,7,8,8,9,9,10,10,10-nonafluorodecyloxy)biphenyl-4′-carboxylate (ENBC) liquid crystal have been analyzed over the frequency range of 100 Hz to MHz in the temperature region from room temperature to 180 °C. The compound ENBC shows enantiotropic a smectic mesophase in a wide temperature range. The phase transition temperatures T (°C) of the liquid crystal ENBC, which were characterized by Differential Scanning Calorimetry (DSC), have been verified by the dielectric measurements and conductivity mechanisms of the ENBC. The activation energies for some selected angular frequencies have also been calculated.",

keywords = "Differential scanning calorimetry (DSC), Impedance spectroscopy (IS), Liquid crystal, Phase transition temperature",

author = "Alptekin Yıldız and Canli, \{Nimet Yilmaz\} and G{\"u}rkan Karanlık and Hale Ocak and Mustafa Okutan and Eran, \{Belkız Bilgin\}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

month = dec,

day = "15",

doi = "10.1016/j.physb.2016.10.001",

language = "English",

volume = "503",

pages = "152--156",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - The determination of the phase transition temperatures of a semifluorinated liquid crystalline biphenyl ester by impedance spectroscopy as an alternative method

AU - Yıldız, Alptekin

AU - Canli, Nimet Yilmaz

AU - Karanlık, Gürkan

AU - Ocak, Hale

AU - Okutan, Mustafa

AU - Eran, Belkız Bilgin

PY - 2016/12/15

Y1 - 2016/12/15

N2 - Dielectric spectroscopy (DS) is a very powerful and important for better understanding of the molecular dynamics and relaxation phenomena in liquid crystals. The dielectric and impedance characteristics Ethyl 4-(7,7,8,8,9,9,10,10,10-nonafluorodecyloxy)biphenyl-4′-carboxylate (ENBC) liquid crystal have been analyzed over the frequency range of 100 Hz to MHz in the temperature region from room temperature to 180 °C. The compound ENBC shows enantiotropic a smectic mesophase in a wide temperature range. The phase transition temperatures T (°C) of the liquid crystal ENBC, which were characterized by Differential Scanning Calorimetry (DSC), have been verified by the dielectric measurements and conductivity mechanisms of the ENBC. The activation energies for some selected angular frequencies have also been calculated.

AB - Dielectric spectroscopy (DS) is a very powerful and important for better understanding of the molecular dynamics and relaxation phenomena in liquid crystals. The dielectric and impedance characteristics Ethyl 4-(7,7,8,8,9,9,10,10,10-nonafluorodecyloxy)biphenyl-4′-carboxylate (ENBC) liquid crystal have been analyzed over the frequency range of 100 Hz to MHz in the temperature region from room temperature to 180 °C. The compound ENBC shows enantiotropic a smectic mesophase in a wide temperature range. The phase transition temperatures T (°C) of the liquid crystal ENBC, which were characterized by Differential Scanning Calorimetry (DSC), have been verified by the dielectric measurements and conductivity mechanisms of the ENBC. The activation energies for some selected angular frequencies have also been calculated.

KW - Differential scanning calorimetry (DSC)

KW - Impedance spectroscopy (IS)

KW - Liquid crystal

KW - Phase transition temperature

UR - https://www.scopus.com/pages/publications/84991704711

U2 - 10.1016/j.physb.2016.10.001

DO - 10.1016/j.physb.2016.10.001

M3 - Article

AN - SCOPUS:84991704711

SN - 0921-4526

VL - 503

SP - 152

EP - 156

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

ER -

The determination of the phase transition temperatures of a semifluorinated liquid crystalline biphenyl ester by impedance spectroscopy as an alternative method

Abstract

Bibliographical note

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this