Film dichroism. III. Linearly-polarized absorption spectra of highly symmetric triphenylmethane dyes in the stretched poly(vinyl alcohol) films.
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概要
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The linear dichroic absorption spectra of Pararosaniline (PR), Crystal Violet (CV), and Ethyl Violet (EV) were measured in the UV and visible regions by the stretched film technique. Poly(vinyl alcohol) was used as the film matrix. A method, which is expressed in the forms of reduced dichroism and dichroic ratio, was proposed for the analysis of the linear dichroism of disk-like molecules. The dyes PR, CV, and EV were shown to behave like disks regarding their orientation in the polymer matrix. The isotropic absorption spectra of PR, CV, and EV were resolved into the in-plane and out-of-plane polarized components by the reduction procedure. In each isotropic spectrum the out-of-plane component was found to overlap with the intense in-plane component in the UV and visible wavelength regions.
- 公益社団法人 日本化学会の論文
著者
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Yamaoka Kiwamu
Faculty of Science, Hiroshima University
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Matsuoka Yukio
Faculty of Science, Hiroshima University
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