Precipitation supramolecular complex for photoinduced anisotropic material with dual mesogenic units
Precipitation supramolecular complex for photoinduced anisotropic material with dual mesogenic units
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DOI：
10.1016/j.polymer.2011.02.023
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发表时间：
2011-06
期刊：
影响因子：
4.6
通讯作者：
Xumeng Chen;Xuemin Lu;Kun Cui;W. Cui;Jun Wu;Q. Lu
中科院分区：
文献类型：
--
作者：
Xumeng Chen;Xuemin Lu;Kun Cui;W. Cui;Jun Wu;Q. Lu
基于沉淀离子自组装(PISA)的方法制备了一类新型的双光响应型配合物。将聚丙烯酸钠分别与含有偶氮苯和肉桂酸酯基团的两种离子介晶单元偶联，合成了一系列热致液晶超分子。通过改变两个介晶单元的比例，得到了不同的相行为和纳米结构。线偏振激光照射后，所有复合膜中的偶氮基团都有类似的光诱导取向，而肉桂酸酯基团在紫外光照射下可以发生交联。此外，还详细研究了交联型肉桂酸酯基团对光诱导取向及其热稳定性的影响。这种新型材料可应用于许多领域，如表面浮雕光栅、液晶显示和非线性光学。这种绿色和表面的方法可以为多功能超分子材料的便捷设计提供指导。
A new family of dual-photoresponsive complexes has been fabricated based on the method of Precipitation Ionic Self-assembly (PISA). Poly (acrylic acid sodium salt) was coupled with two types of ionic mesogenic units containing azobenzene and cinnamate group, respectively, yielding a series of thermotropic liquid crystalline supramolecules. By changing the ratio of the two mesogenic units, different phase behaviors and nanostructures were obtained. Comparable photoinduced orientation of azo groups was observed in all the complex films after being irradiated by linearly polarized laser, while cinnamate groups can be crosslinked under UV light exposure. Furthermore, the influence of crosslinked cinnamate groups on the photoinduced orientation and its thermal stability was investigated in detail. This novel material may be utilized in many fields, such as surface relief gratings, liquid crystal display and nonlinear optics. This green and facial method can provide guidelines for the convenient design of multi-functional supramolecular materials.