Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Volume 42 , Issue 10
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  • Masatoshi Kozaki, Shuichi Suzuki, Keiji Okada
    2013 Volume 42 Issue 10 Pages 1112-1118
    Published: October 05, 2013
    Released: October 05, 2013
    [Advance publication] Released: August 07, 2013
    JOURNALS FREE ACCESS
    Dendritic architectures provide attractive scaffolds for the precise arrangement of considerable numbers of antenna chromophores. Multichromophoric antennas are advantageous for obtaining intense absorption over the entire visible light spectrum. The strategic arrangement of various antenna chromophores produces the lowest excitation energy gradient for efficient energy transfer. Large light-harvesting systems can be constructed by the proper arrangement of the antennas.
    Dendritic architectures provide attractive scaffolds for the precise arrangement of considerable numbers of antenna chromophores. Multichromophoric antennas are advantageous for obtaining intense absorption over the entire visible light spectrum. In addition, the strategic arrangement of various antenna chromophores produces the lowest excitation energy gradient for efficient intramolecular energy transfer. Large light-harvesting systems can be constructed by the proper arrangement of the antennas. Fullsize Image
     
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  • Masaru Sakomura, Minoru Matsushiro, Masaya Sawayama, Shima Miura, Byam ...
    2013 Volume 42 Issue 10 Pages 1179-1181
    Published: October 05, 2013
    Released: October 05, 2013
    [Advance publication] Released: July 06, 2013
    JOURNALS RESTRICTED ACCESS
    Small-molecule solar cells based on zinc phthalocyanine (ZnPc)–fullerene (C60) heterojunction structure were fabricated with a laminated top electrode. The photovoltaic (PV) performances of the laminated devices with and without a bathocuproine (BCP) buffer layer were investigated by comparing with those of the conventional devices with the top electrode deposited by successive vacuum evaporations. Improved PV performances by insertion of BCP buffer layer were observed with both the evaporation- and the lamination-type devices. These results suggest that the formation of the cathode-induced defect states below the lowest unoccupied molecular orbital (LUMO) of BCP would not be necessarily requisite for efficient charge transport across the BCP layer.
  • Hyun Sub Ji, Hyo Yeol Ryu, Sang Mun Jeong, Sung-Wook Cho
    2013 Volume 42 Issue 10 Pages 1182-1184
    Published: October 05, 2013
    Released: October 05, 2013
    [Advance publication] Released: July 09, 2013
    JOURNALS RESTRICTED ACCESS
    NdNi5 hydrogen storage alloy was prepared by direct electrochemical reduction of a solid mixture of Nd2O3–NiO (atomic Nd:Ni = 1:5) in molten LiCl. The cathodic reaction path of the mixed oxide was proposed; it was initiated by the reduction of NiO and promoted by NiNd2O4. The NdNi5 alloy with 1600 ppm oxygen content was successfully synthesized with 50% current efficiency within 1 h. The measured hydrogen capacity of NdNi5 exhibited 6.1 hydrogen atoms per alloy formula unit.
  • Masahiro Yoshizawa-Fujita, Tomoko Kinoshita, Yuta Ono, Yuko Takeoka, M ...
    2013 Volume 42 Issue 10 Pages 1185-1187
    Published: October 05, 2013
    Released: October 05, 2013
    [Advance publication] Released: July 17, 2013
    JOURNALS RESTRICTED ACCESS
    A new ionic liquid was prepared by introducing a boronic acid group to an imidazolium cation with a hydrophobic anion. The boronic acid-containing ionic liquid showed the best ionic conductivity of 6.5 × 10−4 S cm−1 at 50 °C, with a high lithium ion transference number of over 0.5, owing to the anion-trapping effect of the boronic acid group.
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