Molecular orientation of nickel phthalocyanine doped nematic liquid crystal composite under magnetic field


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Ozdemir Z. , Canli N. Y. , Kılıç M. , Koysal O., Yılmaz O., Okutan M.

Molecular Crystals and Liquid Crystals, vol.634, no.1, pp.1-11, 2016 (Journal Indexed in SCI Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 634 Issue: 1
  • Publication Date: 2016
  • Doi Number: 10.1080/15421406.2016.1177889
  • Title of Journal : Molecular Crystals and Liquid Crystals
  • Page Numbers: pp.1-11
  • Keywords: Liquid crystal, Nickel phthalocyanine, dielectric properties, magnetic sensitivity, molecular orientation, FREQUENCY-DEPENDENT CONDUCTIVITY, DIELECTRIC-RELAXATION, HELICAL POLYACETYLENE, CARBON NANOTUBES, AC-CONDUCTIVITY, STACKING

Abstract

© 2016 Taylor & Francis Group, LLC.The electrical and dielectric properties of the nematic liquid crystal (E63) and Nickel Phthalocyanine (NiPc) doped E63 composite have been investigated by dielectric spectroscopy under 0–0.4 T magnetic field. It has been observed that NiPc doping and external magnetic field, B decrease threshold voltage. Moreover, conductivity of the composite has an increasing tendency with magnetic field. Furthermore, a significant decrease in relaxation frequency with B has been interpreted as the simplification of molecular orientation. Hence, NiPc doping enhances the magnetic sensitivity of E63 and increases molecular orientation ability and conductivity.