Photochromism and Chirality Propagation of Chromene Amphiphile Aggregates in Aqueous Ethanol Solutions

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  • Takayoshi Kawasaki
    Department of Biomolecular Engineering and Frontier Collaborative Research Center, Tokyo Institute of Technology
  • Sayaka Horie
    Department of Biomolecular Engineering and Frontier Collaborative Research Center, Tokyo Institute of Technology
  • Kentarou Asaoka
    Department of Biomolecular Engineering and Frontier Collaborative Research Center, Tokyo Institute of Technology
  • Yuichi Manaka
    Department of Biomolecular Engineering and Frontier Collaborative Research Center, Tokyo Institute of Technology
  • Yusuke Yonamine
    Department of Biomolecular Engineering and Frontier Collaborative Research Center, Tokyo Institute of Technology
  • Yoshio Okahata
    Department of Biomolecular Engineering and Frontier Collaborative Research Center, Tokyo Institute of Technology

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Abstract

<jats:title>Abstract</jats:title> <jats:p>Spectroscopic and morphologic characteristics of an racemic chromene cationic amphiphile 1+ having a chiral camphor sulfonate counter anion ((+) or (−) CS∗−) were studied in aggregates in aqueous ethanol solutions. The media-dependent photochromism of 1+/CS∗− and the enantio-preferential selective ring-closing process after UV irradiation were observed owing to the propagation of the chirality from the counter anion CS∗−.</jats:p>

Journal

  • Chemistry Letters

    Chemistry Letters 36 (8), 1048-1049, 2007-07-14

    Oxford University Press (OUP)

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