Mean-field theory of photoinduced molecular reorientation in azobenzene liquid crystalline side-chain polymers

被引：105

作者：

Pedersen, TG

Johansen, PM

机构：

[1] Optics and Fluid Dynamics Department, Risø National Laboratory, Roskilde

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.79.2470

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A novel mean-field theory of photoinduced reorientation and optical anisotropy in liquid crystalline side-chain polymers is presented and compared with experiments, The reorientation mechanism is based on photoinduced trans <-> cis isomerization and a multidomain model of the material is introduced. The theory provides an explanation for the high long-term stability of the photoinduced anisotropy as well as a theoretical prediction of the temporal behavior of photoinduced birefringence. The theoretical results agree favorably with measurements in the entire range of writing intensities used experimentally.

引用

页码：2470 / 2473

页数：4

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