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首页> 外文期刊>Journal of nano research >Nematic Liquid Crystals (NLC) Alignment by the Oriented Nanopatterns of Some Polymers Functionalized with Monochlorotriazinyl -β-cyclodextrin
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Nematic Liquid Crystals (NLC) Alignment by the Oriented Nanopatterns of Some Polymers Functionalized with Monochlorotriazinyl -β-cyclodextrin

机译：通过一氯三嗪基-β-环糊精官能化的某些聚合物的定向纳米图案实现向列液晶（NLC）取向

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摘要

This paper presents the practical strategies of obtaining the oriented nanostructured surfaces of some polymers functionalized with monochlorotriazinyl-β-cyclodextrin (MCT-β-CD) by two techniques: uniaxial rubbing or linearly polarized UV light (LPUVL) irradiation. We have chosen for the present study polymers and copolymers with exotic behavior with hydroxyl groups allowing the grafting of the reactive product monochlorotriazinyl-P-cyclodextrin or whose pyridinic nuclei can be complexated with MCT-β-CD. The obtained oriented nanostructures align colourless nematic liquid crystals (NLC) or NLC coloured with a dichroic dye. The orientation of NLC has been studied by means of polarized light FT-IR spectroscopy (IR dichroism) and polarized light UV-VIS spectroscopy (VIS dichroism). The initial polymers as well as the chemically modified products have an exotic behavior with regard to the ability of orientating the NLC. The polymers functionalized with MCT-β-CD orientate the NLC perpendicularly to the rubbing direction (or, for photopolymers, perpendicularly to the electrical vector of LPUVL).
机译：本文提出了通过两种技术获得单氯三嗪基-β-环糊精（MCT-β-CD）功能化的某些聚合物的定向纳米结构表面的实用策略：单轴摩擦或线性偏振紫外线（LPUVL）照射。对于本研究，我们选择了具有异乎寻常行为且带有羟基的聚合物和共聚物，从而允许接枝反应产物一氯三嗪基-P-环糊精或其吡啶核可以与MCT-β-CD络合。所获得的取向纳米结构使无色向列液晶（NLC）或被二色性染料着色的NLC取向。 NLC的取向已经通过偏振光FT-IR光谱学（IR二色性）和偏振光UV-VIS光谱学（VIS二色性）进行了研究。初始聚合物以及化学改性的产品在定向NLC的能力方面具有奇异的行为。用MCT-β-CD官能化的聚合物使NLC垂直于摩擦方向（或对于光聚合物，垂直于LPUVL的电矢量）。

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