Azophenol-Based Liquid-crystalline Elastomers for Light-Driven Actuators

被引：40

作者：

Garcia-Amoros, Jaume ^{[1
]}

Pinol, Alexandra ^{[1
]}

Finkelmann, Heino ^{[2
]}

Velasco, Dolores ^{[1
]}

机构：

[1] Univ Barcelona, Grp Mat Organ, Inst Nanociencia & Nanotecnol, Dept Quim Organ, E-08028 Barcelona, Spain

[2] Univ Freiburg, Inst Makromol Chem, D-79104 Freiburg, Germany

来源：

ORGANIC LETTERS | 2011年 / 13卷 / 09期

关键词：

NEMATIC ELASTOMERS; POLYSILOXANES; POLYMERS;

D O I：

10.1021/ol200546q

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Para-substituted azophenols exhibit a fast thermal cis-to-trans isomerization rate in ethanol, which can be transferred to the solid state by obtaining liquid-crystalline elastomeric systems. The absence of protic solvent is compensated by the establishment of hydrogen bonding between azophenol monomers that are close to each other. Opto-mechanical experiments reveal that azophenol-containing liquid single-crystal elastomers are valuable materials for light-controlled actuators exhibiting relaxation times of 1 s at room temperature.

引用

页码：2282 / 2285

页数：4

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