Azophenol-Based Liquid-crystalline Elastomers for Light-Driven Actuators
Azophenol-Based Liquid-crystalline Elastomers for Light-Driven Actuators
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DOI：
10.1021/ol200546q
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发表时间：
2011-05-06
期刊：
影响因子：
5.2
通讯作者：
Velasco, Dolores
中科院分区：
文献类型：
--
作者：
Garcia-Amoros, Jaume;Pinol, Alexandra;Velasco, Dolores
对位取代偶氮苯酚在乙醇中表现出快速的热顺反异构化速率，可以通过获得液晶弹性体体系转移到固态。质子溶剂的缺失通过在彼此接近的偶氮苯酚单体之间建立氢键来弥补。光机实验表明，含偶氮酚的液晶单晶弹性体是制作光控致动器的有价值的材料，其室温驰豫时间为1 S。
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.