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Proceedings Paper

External field-induced orientation of DAST nanocrystals in the dispersion state and the fixation
Author(s): H. Kasai; Y. Kaneko; T. Onodera; H. Nakanishi; H. Oikawa; S. Okada; S. Shimada; T. Kimura; H. Matsuda
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Paper Abstract

We have prepared an dispersion of 4'-dimethylamino-N-methylstilbazolium p-toluenesulfonate (DAST) nanocrystals using the reprecipitation method and have spectroscopically measured their orientation in an electric or magnetic field. As a result, we could observe reversible and efficient contrast change that depends on the on-off of applied field. In addition, with controlling the orientation of DAST nanocrystals by the external field, the immobilization was performed using light-cured polymer and the light irradiation. These materials may be applied to the display device or polarized light filter.

Paper Details

Date Published: 12 February 2008
PDF: 6 pages
Proc. SPIE 6891, Organic Photonic Materials and Devices X, 689114 (12 February 2008); doi: 10.1117/12.771177
Show Author Affiliations
H. Kasai, Tohoku Univ. (Japan)
PRESTO, Japan Science and Technology Agency (Japan)
Y. Kaneko, Tohoku Univ. (Japan)
T. Onodera, Tohoku Univ. (Japan)
H. Nakanishi, Tohoku Univ. (Japan)
H. Oikawa, Tohoku Univ. (Japan)
S. Okada, Yamagata Univ. (Japan)
S. Shimada, National Institute of Advanced Industrial Science and Technology (Japan)
T. Kimura, National Institute of Advanced Industrial Science and Technology (Japan)
H. Matsuda, National Institute of Advanced Industrial Science and Technology (Japan)

Published in SPIE Proceedings Vol. 6891:
Organic Photonic Materials and Devices X
Robert L. Nelson; Francois Kajzar; Toshikuni Kaino, Editor(s)

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