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Showing 1–6 of 6 results
Advanced filters: Author: Shinjiro Takano Clear advanced filters

  • The hierarchy of bond stiffness may contribute to the thermal properties of metal clusters. Here, the authors use X-ray absorption spectroscopy to study the stiffness of the gold–gold and gold–sulfur bonds in a series of thiolate-protected, icosahedral-based gold clusters.

    • Seiji Yamazoe
    • Shinjiro Takano
    • Tatsuya Tsukuda
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-7

  • In extended networks, light-induced magnetic ordering through spin change typically involves a charge-transfer mechanism, and thus a valence change of the magnetic metal centres. Now, such long-range ordering has been achieved in a three-dimensional metal–organic framework through the low-spin to high-spin transition of iron(II) centres, leading to a pronounced spontaneous magnetization.

    • Shin-ichi Ohkoshi
    • Kenta Imoto
    • Hiroko Tokoro
    Research
    Nature Chemistry
    Volume: 3, P: 564-569

  • Magic-number Au11 clusters containing N-heterocyclic carbene (NHC) ligands are prepared by ligand exchange on known phosphine clusters and the introduction of even a single NHC results in improved cluster stability. The use of NHC-containing clusters in the electrocatalytic reduction of CO2 to CO is described and correlates with cluster stability.

    • Mina R. Narouz
    • Kimberly M. Osten
    • Cathleen M. Crudden
    Research
    Nature Chemistry
    Volume: 11, P: 419-425

  • Perpendicular photoswitching of the polarization plane of the output second-harmonic light is observed in a chiral spin-crossover assembly based on an iron-octacyanoniobate magnet. This photoswitching can be reversed by irradiating with blue or red light. It originates from alternate photoswitching between the crystallographic and magnetic contributions to second-harmonic generation.

    • Shin-ichi Ohkoshi
    • Shinjiro Takano
    • Hiroko Tokoro
    Research
    Nature Photonics
    Volume: 8, P: 65-71

  • A total of 1074 patients with a history of ischemic stroke enrolled in The Recurrent Stroke Prevention Clinical Outcome (RESPECT) Study were assigned to intensive blood pressure (BP) control group (blood pressure < 120/80 mmHg) or standard blood pressure control group (blood pressure < 140/90 mmHg) and were followed up for a mean of 3.9 years. Seventy-eight first recurrent strokes occurred, including 70 ischemic stroke and 8 intracerebral hemorrhage. Intensive treatment did not change annual risk of ischemic stroke (1.74% vs. 1.75%, P = 0.999), but markedly reduced risk of hemorrhagic stroke (0.00% vs. 0.39%, P = 0.005). Beneficial effect of intensive BP control were observed for risk of hemorrhagic stroke in the patients with a history of ischemic stroke.

    • Kazuo Kitagawa
    • Hisatomi Arima
    • Seigo Nakada
    Research
    Hypertension Research
    Volume: 45, P: 591-601