Self-Assembly and One-Dimensional Alignment of a Conducting Polymer Nanofiber in a Nematic Liquid Crystal
Self-Assembly and One-Dimensional Alignment of a Conducting Polymer Nanofiber in a Nematic Liquid Crystal
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DOI：
10.1021/ma900826h
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发表时间：
2009-06
期刊：
影响因子：
5.5
通讯作者：
Sadaki Samitsu;Y. Takanishi;J. Yamamoto
中科院分区：
文献类型：
--
作者：
Sadaki Samitsu;Y. Takanishi;J. Yamamoto
进行了一项研究，以证明导电聚合物纳米纤维在向列液晶中的自组装和一维排列。选择聚(3, 3'''-二十二烷基四噻吩)(PQT12)作为模型导电聚合物来进行研究。模型聚合物在向列液晶中的混溶性高于聚（3-烷基噻吩）。使用偏振光吸收成像观察样品的形态，以确认纳米纤维的形成及其大规模排列。图像显示，当偏振器平行于向列液晶放置时，纤维状纳米结构垂直于指向矢排列。研究表明，向列指向矢的不同排列是由不同的纳米结构形成机制引起的。
A study was conducted to demonstrate the self-assembly and one-dimensional alignment of a conducting polymer nanofiber in a nematic liquid crystal. A poly (3, 3'''-didodecylquaterthiophene)(PQT12) was selected as a model conducting polymer to conduct the investigations. The miscibility of the model polymer was higher than the poly (3-alkylthiophenes) in a nematic liquid crystal. The morphology of the sample was observed using polarized optical absorption imaging to confirm the formation of nanofibers and their large-scale alignment. The images showed fibrillar nanometer structures that were aligned perpendicular to the director when the polarizer was placed parallel to the nematic liquid crystal. Investigations revealed that different alignment in terms of the nematic director was caused by differing mechanism of nanostructure formation.