Photoinduced Phase Transition of Hybrid Films of Azobenzene-based Photochromic Amorphous Molecular Materials and Poly(vinyl acetate)

Homogeneous hybrid films of azobenzene-based photochromic amorphous molecular materials, 4-[bis(4-methylphenyl)amino]azobenzene (BMAB) and 4-[phenyl(biphenyl-4-yl)amino]azobenzene (PBAB), together with poly(vinyl acetate) (PVAc) were obtained by spin-coating method. Both BMAB-PVAc and PBAB-PVAc film...

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Bibliographic Details
Published in:Journal of Photopolymer Science and Technology 2018/06/25, Vol.31(1), pp.81-84
Main Authors: Nakano, Hideyuki, Ichikawa, Ryoji, Doi, Yuto
Format: Article
Language:English
Subjects:
Amorphous materials
Azobenzene-based photochromic amorphous molecular material
Laser beams
Phase separation
Phase transitions
Photochromism
Photoinduced phase transition
Poly(vinyl acetate)
Polyvinyl acetates
Spin coating
Vinyl acetate
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Summary:Homogeneous hybrid films of azobenzene-based photochromic amorphous molecular materials, 4-[bis(4-methylphenyl)amino]azobenzene (BMAB) and 4-[phenyl(biphenyl-4-yl)amino]azobenzene (PBAB), together with poly(vinyl acetate) (PVAc) were obtained by spin-coating method. Both BMAB-PVAc and PBAB-PVAc films exhibited reversible phase separation-resolution phenomena by thermal treatments. When the resulting phase-separated films were irradiated with 488 nm-laser beam at appropriate temperature, phase transition was found to take place to form homogeneous films.
ISSN:0914-9244
1349-6336
DOI:10.2494/photopolymer.31.81