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
收藏
页码：2282 / 2285
页数：4
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