甲基红偶氮染料在聚合物膜中的光致各向异性

IF 0.3 Q4 CRYSTALLOGRAPHY Liquid Crystals and their Application Pub Date : 2022-12-22 DOI:10.18083/lcappl.2022.4.63

V. Kozenkov, V. Belyaev, D. Chausov

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引用次数: 0

摘要

通过研究二向色光谱和光致双折射，研究了甲基红（MR）偶氮染料在PMMA聚合物固体膜中的光致各向异性。在光活性辐照过程中原位测量了MR染料的可逆PIA。光致有序度随曝光功率的增加而增加。结果表明，PIA暗弛豫在较高的曝光能量下减慢。在不同的曝光模式下评估MR旋转扩散。这些数据可用于表征作为液晶光取向材料的甲基红偶氮染料。

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Photo-Induced Anisotropy of Methyl Red Azo Dye in Polymer Film

A photo-induced anisotropy (PIA) of Methyl Red (MR) azo dye embedded in PMMA polymer solid films was investigated by studying dichroic spectra and photo-induced birefringence. The reversible PIA of MR dye was measured in situ during photoactive irradiation process. Photoinduced order increases with the rise of exposure power. It is shown that PIA dark relaxation slows down at higher exposure energy. The MR rotational diffusion was evaluated at different exposure modes. These data are useful for the characterization of Methyl Red azo dye as a liquid crystal photo-aligning material.

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来源期刊

Liquid Crystals and their Application CRYSTALLOGRAPHY-

CiteScore

1.30

自引率

40.00%

发文量

期刊介绍： The Journal presents the following main directions of creation/construction, study and application of self-assembled materials: SYNTHESIS, STRUCTURE, PROPERTIES, MEDICINE, BIOLOGY, NANOTECHNOLOGY, SENSORS, PRACTICAL APPLICATION and INFORMATION. The journal is addressed to researchers, lecturers, university students, engineers. The publisher of the journal is the Nanomaterials Research Institute of "Ivanovo State University".