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Showing 1–4 of 4 results
Advanced filters: Author: Satoshi Yokojima Clear advanced filters

  • The crystalline surface using two photochromic diarylethenes was prepared to mimic a termite wing showing dual wettability. The surface is useful to correct small water droplets in the air. However, the crystalline system was not applicable for the use because crystalline structures on the surface melt under daylight. We copied the rough structure of crystalline film to a stable polycycloolefin polymer (Zeonex 480) surface. The copied surface showed the dual wettability as same as that of the crystalline surface.

    • Yuki Hashimoto
    • Amane Hase
    • Kingo Uchida
    Research
    Polymer Journal
    Volume: 56, P: 847-853

  • Molecular photoswitches can imbue materials with striking properties. Here a mixture of two photoswitchable diarylethenes forms both water-retentive and water-repellent crystals, causing small water drops to be retained while larger drops are repelled, akin to the behaviour of termite wings.

    • Ryo Nishimura
    • Kengo Hyodo
    • Kingo Uchida
    ResearchOpen Access
    Communications Chemistry
    Volume: 2, P: 1-11

  • The mechanism of intense autopolymerization reaction of 2-bromo-3-methoxythiophenes spewing brownish gas was clarified from UV-Vis, ESR, GC/MS, elemental analysis, NMR, and FT-IR spectroscopy. The reaction contained the formation of the hydrogen bromide gas during the autopolymerization. The gas induced the cleavage of the methoxy group on the thiophene ring to form the methyl bromide gas as the side reaction. This work provides an important guide for the application of the autopolymerization of thiophene derivatives to design new polymer materials.

    • Ryo Nishimura
    • Yohei Hattori
    • Kingo Uchida
    Research
    Polymer Journal
    Volume: 53, P: 429-438