Structural dynamics in azobenzene liquid crystal polymer films studied by microscopic and time-resolved technique

Kenji Katayama; Shota Kuwahara; Tomiki Ikeda

doi:10.1117/12.2186414

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5 September 2015 Structural dynamics in azobenzene liquid crystal polymer films studied by microscopic and time-resolved technique

Kenji Katayama, Shota Kuwahara, Tomiki Ikeda

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Proceedings Volume 9565, Liquid Crystals XIX; 95650I (2015) https://doi.org/10.1117/12.2186414
Event: SPIE Organic Photonics + Electronics, 2015, San Diego, California, United States

Abstract

We studied the photo-induced dynamics in a LC polymer film including azobenzene by using a time-resolved and a microscopic technique. The film was confined in a liquid crystal cell, while it is a photomobile film under a free standing condition, which is triggered by the photoisomerization of azobenezene. From the result of the time-resolved measurements, the change inside the film induced by UV irradiation was highly anisotropic polarization change. Microscopic observation revealed that the film was consisted of ordered and disordered region with a patched structure, and the UV induced change was travelled in the ordered region on the order of seconds.

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Kenji Katayama, Shota Kuwahara, and Tomiki Ikeda "Structural dynamics in azobenzene liquid crystal polymer films studied by microscopic and time-resolved technique", Proc. SPIE 9565, Liquid Crystals XIX, 95650I (5 September 2015); https://doi.org/10.1117/12.2186414

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