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Proceedings of the Japan Academy, Ser. B, Physical and Biological Sciences

Vol. 88 No. 6 (2012)

  Vol. 88 No. 6 (2012)
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Reviews
Switchable molecular magnets
Osamu SATO
Proc. Jpn. Acad., Ser. B, Vol. 88, 213-225 (2012) [abstract] [PDF]
Molecular basis of the structure and function of H1 hemagglutinin of influenza virus
Nongluk SRIWILAIJAROEN, Yasuo SUZUKI
Proc. Jpn. Acad., Ser. B, Vol. 88, 226-249 (2012) [abstract] [PDF]
Immunochemistry of pathogenic yeast, Candida species, focusing on mannan
Nobuyuki SHIBATA, Hidemitsu KOBAYASHI, Shigeo SUZUKI
Proc. Jpn. Acad., Ser. B, Vol. 88, 250-265 (2012) [abstract] [PDF]
Neuronal dysfunction with aging and its amelioration
Susumu ANDO
Proc. Jpn. Acad., Ser. B, Vol. 88, 266-282 (2012) [abstract] [PDF]
Cover Illustration
Control of magnetic properties through external stimuli
  Molecular magnetism is the subject of a rapidly developing field of molecular materials science. Various high-spin molecules, purely organic ferromagnets, room-temperature magnets, and quantum magnets including single-molecule and single-chain magnets have been successfully synthesized. In addition, a new type of magnet in which the magnetic properties can be controlled by photo-irradiation has recently attracted significant attention. In 1996, Sato and coworkers discovered photo-tunable magnetic properties of a molecule-based magnet, FeCo Prussian blue analog. The photo-excitation of a charge transfer band in this compound resulted in the formation of a ferrimagnetic state from a paramagnetic one. Recently, Sato and coworkers succeeded in synthesizing a photo-tunable FeCo compound with a one-dimensional chain structure that exhibits an anti-ferromagnetic ordered state of a single-chain magnet after photo-irradiation. They also reported various switchable molecular magnets as described on pages 213 to 225, establishing the photocontrol of the above-mentioned magnets in an important interdisciplinary field between spin chemistry and photochemistry. The synthesis of the photo-magnets promises the development of a future high-density photo-magnetic recording medium.
Hiizu Iwamura
Professor, College of Science and Technology, Nihon University

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