Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Volume 40 , Issue 6
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  • Nobuhiro Kawatsuki
    2011 Volume 40 Issue 6 Pages 548-554
    Published: June 05, 2011
    Released: May 11, 2011
    JOURNALS FREE ACCESS
    Photosensitive materials for photoalignment of liquid crystals (LCs) and photoinduced molecular reorientation are described, especially focusing on azobenzene-containing materials and photocrosslinkable polymers. All the materials generate photoinduced optical anisotropy by means of linearly polarized (LP) light exposure. The large optical anisotropy is induced when the axis-selective photoreaction is accompanied by molecular reorientation.
    Linearly polarized (LP) light exposure to photosensitive materials containing azobenzene or photocrosslinkable groups generates photoinduced optical anisotropy as a result of axis-selective photoreaction. The resulting photoreacted thin films are useful for the alignment layer for functional materials. Furthermore, large optical anisotropy can be induced when the axis-selective photoreaction is accompanied by the molecular reorientation. Fullsize Image
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  • Hisashi Sugimoto, Takayuki Tanaka, Atsuhiro Osuka
    2011 Volume 40 Issue 6 Pages 629-631
    Published: June 05, 2011
    Released: May 21, 2011
    JOURNALS OPEN ACCESS
    meso-Tris(4-ferrocenylphenyl)subporphyrin 1 and meso-triferrocenylsubporphyrin 2 were prepared. The structure of 2 was confirmed by X-ray analysis. Both molecules exhibit substantially red-shifted absorption spectra and almost complete fluorescence quenching, due to the influence of the electron-donating ferrocene substituents. Subporphyrin 1 exhibits a nonsplit oxidation wave for the oxidation of the ferrocene moieties, while subporphyrin 2 exhibits a split reversible oxidation wave with ΔE = 168 mV to indicate effective electronic communication.
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