External field-induced orientation of DAST nanocrystals in the dispersion state and the fixation

H. Kasai; Y. Kaneko; T. Onodera; H. Nakanishi; H. Oikawa; S. Okada; S. Shimada; T. Kimura; H. Matsuda

doi:10.1117/12.771177

12 February 2008 External field-induced orientation of DAST nanocrystals in the dispersion state and the fixation

H. Kasai, Y. Kaneko, T. Onodera, H. Nakanishi, H. Oikawa, S. Okada, S. Shimada, T. Kimura, H. Matsuda

Proceedings Volume 6891, Organic Photonic Materials and Devices X; 689114 (2008) https://doi.org/10.1117/12.771177
Event: Integrated Optoelectronic Devices 2008, 2008, San Jose, California, United States

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.

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H. Kasai, Y. Kaneko, T. Onodera, H. Nakanishi, H. Oikawa, S. Okada, S. Shimada, T. Kimura, and H. Matsuda "External field-induced orientation of DAST nanocrystals in the dispersion state and the fixation", Proc. SPIE 6891, Organic Photonic Materials and Devices X, 689114 (12 February 2008); https://doi.org/10.1117/12.771177

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