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

Okutan, Mustafa; Yakuphanoglu, Fahrettin; Koysal, Oguz; Durmus, Mahmut; Ahsen, Vefa

doi:10.1016/j.saa.2006.08.010

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

Atıf İçin Kopyala

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-Expanded)

Yayın Türü: Makale / Tam Makale
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
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.531-535
Yıldız Teknik Üniversitesi Adresli: Hayır

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.