期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 30, 期 20, 页码 1725-1730出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200900464
关键词
azobenzene; azopolymers azotolane; liquid-crystalline polymers (LCP); photoinduced birefringence; post-functionalization
资金
- MEXT of Japan
A series of functionalized liquid-crystalline polymer materials with different degrees of functionality was synthesized by a post Sonogashira cross-coupling reaction of a polymer precursor. The post-functionalization was carried out under mild conditions and showed a high yield. Although a highly birefringent azotolane group was introduced into the polymer precursor, the photoresponse of the functionalized liquid-crystalline materials was not obviously changed. By adjusting the content of azotolane groups, precise control of the photoinduced birefringence was successfully obtained after thermal enhancement upon annealing. The present method to gain precise control of photoinduced birefringence might enable one to finely photocontrol the optical performances of materials, and may have a potential application as an advanced process for photonic materials.
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