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タイトル: | Generation of time-multiplexed chiroptical information from multilayer-type luminescence-based circular polarization conversion films |
著者: | Okazaki, Yutaka Shimizu, Hayaki Nakamura, Kaito Yoshida, Kyohei Raffy, Guillaume Kimura, Misaki Tsukamoto, Keita Akasegawa, Rei Hachiya, Kan Takafuji, Makoto Del Guerzo, Andre Sagawa, Takashi https://orcid.org/0000-0002-0908-0487 (unconfirmed) |
著者名の別形: | 岡﨑, 豊 清水, 快樹 仲村, 快太 吉田, 恭平 木村, 美咲 塚本, 桂大 赤瀬川, 怜 蜂谷, 寛 高藤, 誠 佐川, 尚 |
発行日: | 21-Mar-2024 |
出版者: | Royal Society of Chemistry (RSC) |
誌名: | Materials Advances |
巻: | 5 |
号: | 6 |
開始ページ: | 2253 |
終了ページ: | 2259 |
抄録: | Circularly polarized (CP) light generated from photoluminescence (PL) has great potential for the transmission of diverse forms of optical information including light intensity (brightness), spectral profile (color), and polarization (left-handed (LH)/right-handed (RH)), as well as temporal information corresponding to the PL lifetime of the CP light source. However, a systematic approach to the design of CP light-generating materials for the conveyance of time-multiplexed chiroptical information has not yet been reported. Herein, we demonstrate a novel approach to time-multiplexing chiroptical information using multilayered luminescence-based CP convertors comprising two linearly polarized luminescence (LPL) films with different PL lifetimes and a quarter-wave retardation film. We prepared LPL films with short and long PL lifetimes by stretching films comprising poly[2-methoxy-5-(2-ethylhexyloxy)-1, 4-phenylenevinylene] (MEH-PPV) and CdSe/CdS core/shell quantum rod (QR) luminogens, respectively. We then fabricated four types of multilayered luminescence-based CP convertors by laminating the LPLMEH-PPV and LPLQR films with quarter-wave retardation films, so that the azimuthal angles between the polarization axes of the LPL films and the fast axes of the quarter-wave films differed in each case. The resulting CP light comprised short- and long-lifetime components. Subsequently, we used a time-resolved spectroscopic technique to extract time-multiplexed chiroptical information from changes in the time-course of the spectral profile of the LH- and RH-CP light. The time-varying of CP light profiles were thereby read-out as time-multiplexed chiroptical information. Our findings will pave the way for the design of CP light-generating materials for conveying time-multiplexed chiroptical information. |
記述: | 時間変化する円偏光スペクトルの生成と読み出しに成功 --光記録や偽造防止技術への円偏光利用に期待--. 京都大学プレスリリース. 2024-02-09. |
著作権等: | © 2024 The Author(s). Published by the Royal Society of Chemistry This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. |
URI: | http://hdl.handle.net/2433/287409 |
DOI(出版社版): | 10.1039/d3ma00648d |
関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2024-02-09 |
出現コレクション: | 学術雑誌掲載論文等 |
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