Photoinduced alignment of nanocylinders by supramolecular cooperative motions.
Photoinduced alignment of nanocylinders by supramolecular cooperative motions.
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DOI：
10.1021/ja064148f
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发表时间：
2006-08
影响因子：
15
通讯作者：
Haifeng Yu;T. Iyoda;T. Ikeda
中科院分区：
文献类型：
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作者：
Haifeng Yu;T. Iyoda;T. Ikeda
线性偏振激光束被用来控制纳米柱自组装在两亲性二嵌段液晶共聚物组成的柔性聚（环氧乙烷）作为亲水性嵌段和聚（甲基丙烯酸酯）含有偶氮苯部分的侧链作为疏水性液晶段。通过有序偶氮苯和微相分离之间的超分子协同运动，实现了聚（环氧乙烷）纳米柱的完美阵列，垂直于光化光的偏振方向排列。通过简单方便的光控方法，可以在任意区域内实现纳米柱的宏观平行图案化。
A linearly polarized laser beam was used to control nanocylinders self-assembled in an amphiphilic diblock liquid-crystalline copolymer consisting of flexible poly(ethylene oxide) as a hydrophilic block and poly(methacrylate) containing an azobenzene moiety in the side chain as a hydrophobic liquid-crystalline segment. The perfect array of poly(ethylene oxide) nanocylinders was achieved, aligned perpendicularly to the polarization direction of the actinic light by supramolecular cooperative motions between the ordered azobenzene and microphase separation. By the simple and convenient way of photocontrol, the macroscopic parallel patterning of nanocylinders can be easily obtained in an arbitrary area.