Thermal amplification of photoinduced optical anisotropy of p-cyanoazobenzene polymer films monitored by temperature scanning ellipsometry

Masatoshi Kidowaki, Takenori Fujiwara, Shin'ya Morino, Kunihiro Ichimura, Joachim Stumpe

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Abstract

The in situ observation of thermal alteration of photoinduced optical anisotropy of ultrathin films of polymethacrylates having p-cyanoazobenzene side chains exhibiting amorphous, crystalline, and liquid-crystalline phases was performed by means of temperature scanning ellipsometry. Whereas photogenerated optical anisotropy of amorphous polymer films disappeared above glass transition temperature, the photoinduced anisotropy of films of liquid crystalline and crystalline polymer films was significantly amplified by heat treatment. In case of crystalline polymers, amplified optical anisotropy was maintained even at 300°C.

Original languageEnglish
Pages (from-to)1377-1379
Number of pages3
JournalApplied Physics Letters
Volume76
Issue number11
DOIs
Publication statusPublished - 2000 Mar 13

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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