Structure effect and orientation distribution of azo dyes on optical anisotropy of dyed PVA-films

• Published in: Semiconductor Physics Quantum Electronics & Optoelectronics
• Date: 2013
• Main Authors: Filippovich, L.N., Ariko, N.G., Almodarresiyeh, H.A., Shahab, S.N., Malashko, P.M., Agabekov, V.E.
• Format: Article
• Language: English
• Published: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 2013
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/117697
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Structure effect and orientation distribution of azo dyes
 on optical anisotropy of dyed PVA-films / .N. Filippovich, N.G. Ariko, H.A. Almodarresiyeh, S.N. Shahab, P.M. Malashko, V.E. Agabekov // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2013. — Т. 16, № 2. — С. 220-23. — Бібліогр.: 7 назв. — англ.

The derivatives of phenylazobenzoic, phenylazosalicylic acids and
 azobenzeneazonaphthalene were synthesized and employed to prepare polarizing films
 based on polyvinyl alcohol (PVA). The single-piece transmittance (T0), polarizing
 efficiency (PE), dichroic ratio (Rd) of films and order parameter of dyes (Sdye) were
 calculated. It was found that parameters Rd and Sdye increased as electron-donating of
 substituents in molecules of phenylazobenzoic and phenylazosalicylic acids derivatives
 was grown, and the polarizing efficiency of film increased with increasing the order
 parameter of dye. Development of PVA films dyed with the derivatives of
 phenylazosalicylic acid and azobenzeneazonaphthalene allowed to obtain polarizers for
 near UV and visible range of spectrum, respectively. It was also developed a broadband
 polarizer for 300-610 nm.