Dielectric spectroscopy analysis in employing liquid crystal phthalonitrile derivative in nematic liquid crystals


Okutan M. , Yakuphanoglu F., Koysal O., Durmus M., Ahsen V.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, cilt.67, ss.531-535, 2007 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 67
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1016/j.saa.2006.08.010
  • Dergi Adı: SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
  • Sayfa Sayıları: ss.531-535

Özet

Dielectric anizotropy and relaxation properties of 2,3-dicyano-1,4-di[3,4,5-tri(dodecyloxy)phenylcarbonyloxy] benzene (DCDPB)-doped E7 and E7 liquid crystal have been investigated by the dielectric spectroscopy method. Dielectric anisotropy property of the LCs changes from the positive type to negative type. Dielectric relaxation properties suggest that LCs exhibit a monodispersive dielectric property. The relaxation frequency of E7 and E7/DCDPB liquid crystals was calculated by means of Cole-Cole plots. Consequently, DCDPB dopant changes the dielectric anizotropy and relaxation parameters of E7 LC. (C) 2006 Elsevier B.V. All rights reserved.