Location of the Azobenzene Moieties within the Cross-Linked Liquid-Crystalline Polymers Can Dictate the Direction of Photoinduced Bending.
Location of the Azobenzene Moieties within the Cross-Linked Liquid-Crystalline Polymers Can Dictate the Direction of Photoinduced Bending.
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DOI：
10.1021/mz200056w
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发表时间：
2012-01
影响因子：
5.8
通讯作者：
A. Priimagi;Aki Shimamura;M. Kondo;T. Hiraoka;S. Kubo;J. Mamiya;Motoi Kinoshita;T. Ikeda;A. Shishido
中科院分区：
文献类型：
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作者：
A. Priimagi;Aki Shimamura;M. Kondo;T. Hiraoka;S. Kubo;J. Mamiya;Motoi Kinoshita;T. Ikeda;A. Shishido
我们提出了一种简单的方法来控制含偶氮苯的交联液晶聚合物的光致弯曲方向。通过改变光活性偶氮苯部分的位置从交联到侧链，样品的弯曲方向在相同的照射条件下被反转。除了提供一个多功能的路线走向的方向性控制的光诱导宏观运动，这一观察突出了含偶氮苯的交联液晶聚合物的光机械响应的复杂性，显示的photomask的行为可以确定的材料设计上看似小的细节。
We present a simple way to control the photoinduced bending direction of azobenzene-containing cross-linked liquid-crystalline polymers. By changing the location of the photoactive azobenzene moieties from cross-links to side-chains, the bending direction of the sample is reversed under identical irradiation conditions. In addition to providing a versatile route toward directionality control of the photoinduced macroscopic motions, this observation highlights the complicated nature of the photomechanical response of azobenzene-containing cross-linked liquid-crystalline polymers, showing that the photomobile behavior can be determined by seemingly small details on the materials design.