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

doi:10.1063/1.126037

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

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

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 language	English
Pages (from-to)	1377-1379
Number of pages	3
Journal	Applied Physics Letters
Volume	76
Issue number	11
DOIs	https://doi.org/10.1063/1.126037
Publication status	Published - 2000 Mar 13
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.126037

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Thermal amplification of photoinduced optical anisotropy of p-cyanoazobenzene polymer films monitored by temperature scanning ellipsometry. / Kidowaki, Masatoshi; Fujiwara, Takenori; Morino, Shin'ya; Ichimura, Kunihiro; Stumpe, Joachim.

In: Applied Physics Letters, Vol. 76, No. 11, 13.03.2000, p. 1377-1379.

Research output: Contribution to journal › Article › peer-review

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AU - Ichimura, Kunihiro

AU - Stumpe, Joachim

PY - 2000/3/13

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AB - 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.

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

Abstract

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