Photomagnetic Langmuir-Blodgett films consisting of azobenzene and Prussian Blue: Correlation between the film structure and the photomagnetic efficiency

Takashi Yamamoto, Yasushi Umemura, Osamu Sato, Yasuaki Einaga

研究成果: Article査読

15 被引用数 (Scopus)

抄録

A photomagnetic organized thin film consisting of an amphiphilic azobenzene, a smectite clay, and Prussian Blue has been prepared by utilizing the Langmuir-Blodgett (LB) method and an ion-exchange reaction. The magnetic LB films were revealed to possess an organized layered structure, and reversible photoisomerization of the azobenzene was observed even in the LB films. Upon photoillumination at 2 K, reversible changes in the magnetization were realized with the value of ca. 11%. This photoswitching in the magnetization is due to changes in the electrostatic field induced by photoisomerization of the azobenzene. A large photoinduced change in the magnetization would be owing to the highly ordered structure of the LB films. In order to verify the correlation between the film structure and photoswitching efficiency, the LB films have been fabricated in other condition. As results, it is confirmed that the packing state of the azobenzene plays an important and crucial role in accomplishment of the highly efficient photomagnetic switching.

本文言語English
ページ(範囲)134-138
ページ数5
ジャーナルScience and Technology of Advanced Materials
7
2
DOI
出版ステータスPublished - 2006 3

ASJC Scopus subject areas

  • 材料科学(全般)

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