Photo-Induced Anisotropy of Methyl Red Azo Dye in Polymer Film
نویسندگان
چکیده
A photo-induced anisotropy (PIA) of Methyl Red (MR) azo dye embedded in PMMA polymer solid films was investigated by studying dichroic spectra and birefringence. The reversible PIA MR measured situ during photoactive irradiation process. Photoinduced order increases with the rise exposure power. It is shown that dark relaxation slows down at higher energy. rotational diffusion evaluated different modes. These data are useful for characterization as a liquid crystal photo-aligning material.
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ژورنال
عنوان ژورنال: Židkie kristally i ih prakti?eskoe ispol?zovanie
سال: 2022
ISSN: ['2499-9644', '1991-3966']
DOI: https://doi.org/10.18083/lcappl.2022.4.63