Study of Formation Mechanisms of Photo-Induced Dichroism in Azo-Containing Polymer Films

K. L. Shukhina; A. I. Fishman; S. S. Kharintsev; A. I. Skvortzov

doi:10.3103/S1068335618030089

Study of Formation Mechanisms of Photo-Induced Dichroism in Azo-Containing Polymer Films

Autores: Shukhina K.L.¹, Fishman A.I.¹, Kharintsev S.S.¹, Skvortzov A.I.¹
Afiliações:
1. Kazan Federal University
Edição: Volume 45, Nº 3 (2018)
Páginas: 95-98
Seção: Article
URL: https://journals.rcsi.science/1068-3356/article/view/228602
DOI: https://doi.org/10.3103/S1068335618030089
ID: 228602

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Resumo

Photoinduced dichroism (PD) in azo-containing polymers can result from chromophore orientation and/or cis-isomer accumulation. The PD formation mechanism of azochrommophores DO3 (DisperseOrange 3) doped in polymethyl methacrylate (PMMA) at a temperature varying from –20 to +120 °C is studied by UV-visible spectroscopy. It is shown that the main PD formation mechanism at T < 0°C and T > 60°C is cis-isomer accumulation and trans-isomer photoorientation, respectively.