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首页> 外文期刊>Advanced Functional Materials >Liquid-Crystalline Polymer with a Block Mesogenic Side Group: Photoinduced Manipulation of Nanophase- Separated Structures
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Liquid-Crystalline Polymer with a Block Mesogenic Side Group: Photoinduced Manipulation of Nanophase- Separated Structures

机译：具有嵌段介晶侧基的液晶聚合物：纳米相分离结构的光诱导操纵。

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摘要

In this report, a novel type of photoresponsive liquid crystalline polymer with a block mesogenic side-group is demonstrated. The block mesogene is an amphipathic molecule containing a hydrophobic mesogene (azotolane moiety) and hydrophilic oligooxyethylene moieties in the same unit. The block mesogene in the polymer plays a role in liquid crystalline, amphiphilic and photoresponsive properties. As expected, a film prepared from the polymer exhibits phase separation of a lamellar structure due to cooperative motion between liquid crystal assembly and nanophase separation. The morphology of the lamellae can be aligned upon irradiation of linearly polarized light. Moreover, a photochemical phase transition induced by unpolarized UV irradiation erases the surface morphology. The erased nanostructure can be recovered by annealing or irradiation of linearly polarized light, meaning that the surface morphology is rewritable via a photochemical process.
机译：在此报告中，展示了一种新型的具有嵌段介晶侧基的光敏液晶聚合物。嵌段介基因是在同一单元中包含疏水介基因（偶氮戊烷部分）和亲水性低聚氧乙烯部分的两亲性分子。聚合物中的嵌段介基因在液晶，两亲和光响应特性中起作用。如所期望的，由于液晶组件和纳米相分离之间的协同运动，由聚合物制备的膜表现出层状结构的相分离。薄片的形态可以在线性偏振光的照射下对准。而且，由非偏振紫外线辐射引起的光化学相变消除了表面形态。可以通过对线性偏振光进行退火或照射来恢复被擦除的纳米结构，这意味着可以通过光化学过程来改写表面形态。

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  • 来源
    《Advanced Functional Materials》 |2009年第23期|3804-3808|共5页
  • 作者

    Kunihiko Okano; Yasuyuki Mikami; Takashi Yamashita;

  • 作者单位

    Department of Pure and Applied Chemistry Tokyo University of Science 2641 Yamazaki, Noda-shi, 278-8510 (Japan);

    Department of Pure and Applied Chemistry Tokyo University of Science 2641 Yamazaki, Noda-shi, 278-8510 (Japan);

    Department of Pure and Applied Chemistry Tokyo University of Science 2641 Yamazaki, Noda-shi, 278-8510 (Japan);

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