Synthesis and characterization of highly efficient photorefractive polymer composites with long phase stability

被引：55

作者：

Hendrickx, E

Wang, JF

Maldonado, JL

Volodin, BL

Sandalphon

Mash, EA

Persoons, A

Kippelen, B ^{[1
]}

Peyghambarian, N

机构：

[1] Univ Arizona, Ctr Opt Sci, Tucson, AZ 85721 USA

[2] Univ Arizona, Dept Chem, Tucson, AZ 85721 USA

来源：

MACROMOLECULES | 1998年 / 31卷 / 03期

关键词：

D O I：

10.1021/ma9714777

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 have synthesized the chromophores 4-[(4'-nitrophenyl)azo]-1,3-bis[(3 "- or 4 "-vinylbenzyl)oxy]benzene (NPADVBB) and 4-[(4'-nitrophenyl)azo]-1,3-bis(benzyloxy)benzene (NPADB). New polymer composites based on the photoconductor poly(9-vinylcarbazole), the plasticizer 9-ethylcarbazole, NPADVBB, and the sensitizers 2,4,7-trinitro-9-fluorenone and (2,4,7-trinitro-9-fluorenylidene)malonitrile were prepared. Ellipsometric measurements and degenerate four-wave mixing experiments were performed at 633 and 830 nm. The composites showed excellent phase stability, and nearly complete diffraction was observed at 633 nm. The two-beam coupling gain was limited by the small phase shift between the interference pattern and the index grating.

引用

页码：734 / 739

页数：6