Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Volume 46 , Issue 6
Showing 1-35 articles out of 35 articles from the selected issue
Highlight Review
  • Yutaka Amao
    2017 Volume 46 Issue 6 Pages 780-788
    Published: June 05, 2017
    Released: June 05, 2017
    JOURNALS RESTRICTED ACCESS

    In this review, the recent studies on 1) the visible-light-induced reduction of CO2 to formic acid catalyzed by formate dehydrogenase (FDH) via the reduction of a 4,4′- or 2,2′-bipyridinium salt (BP2+) by a photosensitizer, 2) the electrochemical properties of BP2+, and 3) the enzymatic kinetic properties of the interaction between the reduced forms of BP2+ and FDH are reviewed. Moreover, visible-light-induced biocatalytic C–C bond formation using CO2 as a feedstock via photoreduction of the phenylviologen derivative is introduced.

    The recent studies on the visible-light-induced CO2 reduction to formic acid with formate dehydrogenase (FDH) via the reduction of 4,4′- or 2,2′-bipyridinium salt (BP2+) by photosensitizer, electrochemical properties of BP2+s, and kinetic properties of the interaction between reduced form of BP2+s and FDH by enzymatic analysis are reviewed. Moreover, the visible-light-induced carbon–carbon bond formation from CO2 with biocatalyst via the photoreduction of phenylviologen derivative also is introduced. Fullsize Image
     
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  • Tomohiro Fukushima, Hirotoshi Sakamoto, Kohei Tanaka, Yuh Hijikata, St ...
    2017 Volume 46 Issue 6 Pages 855-857
    Published: June 05, 2017
    Released: June 05, 2017
    JOURNALS RESTRICTED ACCESS

    Molecular carbon nanorings, [n]cycloparaphenylenes ([n]CPP), are a unique class of porous molecules with all-benzene surface. Herein, we report the preparation of polymorphs of [6]CPP crystals for the first time, and the discovery of their packing structure-dependent properties. We found that the herringbone-packed structure is thermodynamically more stable than the tubular-packed structure. We revealed that their host–guest interaction depends on the packing structures of [6]CPP: the tubular-packing affords one-dimensional open channels for weak guest sorption, while the herringbone-packing gives closed cavities for strong guest entrapment. This study exemplifies that the solid-state host–guest chemistry of CPP crystals can be directed by controlling their packing structures.

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