On the photo-physical behavior and electro-optical effect of oxazine dyes in anisotropic host

被引：18

作者：

Ghanadzadeh, A ^{[1
]}

Tajalli, H

Zirack, P

Shirdel, J

机构：

[1] Tabriz Univ, Ctr Appl Phys & Astron, Tabriz, Iran

[2] Guilan Univ, Fac Sci, Dept Chem, Rasht 31345, Iran

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2004年 / 60卷 / 12期

关键词：

oxazine dyes; ionic dyes; aggregation; guest-host interactions; anisotropic host;

D O I：

10.1016/j.saa.2004.02.003

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The optical characterization and polarized spectroscopy of oxazine 720, oxazine 750, and Nile blue were obtained in a nematic matrix. The interaction of these ionic dyes with the anisotropic surrounding and with that of the isotropic organic solvents was investigated and compared. The influence of the host nature on the molecular interaction of the guest molecules was also investigated. Dichroic ratios R and degree of anisotropy S of these ionic dyes in the liquid crystalline host were investigated by measuring the intensity of the absorption bands in the visible region of parallel aligned samples. The electro-optical effects of the guest-host systems were also investigated in an electro-optical system using polarized spectroscopic method based on homogeneous-homeotropic alignment. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：2925 / 2932

页数：8

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