Optically induced dichroism and birefringence of disperse red 1 in hybrid polymers

被引：22

作者：

Bohm, N

Materny, A

Steins, H

Muller, MM

Schottner, G

机构：

[1] Univ Wurzburg, Inst Phys Chem, D-97074 Wurzburg, Germany

[2] Fraunhofer Inst Silicatforsch, D-97082 Wurzburg, Germany

来源：

MACROMOLECULES | 1998年 / 31卷 / 13期

关键词：

D O I：

10.1021/ma970083c

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We report results of dichroism and birefringence measurements on Disperse Red 1 (DR1) in hybrid polymers. To investigate the influence of the matrix-chromophore interaction, we employ doped and functionalized systems using three kinds of matrices with different rigidity. Writing, erasing, and rewriting processes are performed on the polymer films at temperatures ranging from 50 to 300 K. Two processes are recognized, the photochemical cis-trans isomerization of the dye molecules and a thermal motion of the photoactive chromophore inside the surrounding matrix. By comparing results obtained from the different network systems, we find that the main parameter correlated with the extent of induced anisotropy is the degree of mobility of the chromophore within the surrounding matrix.

引用

页码：4265 / 4271

页数：7

共 24 条

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