Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Volume 46 , Issue 2
Showing 1-33 articles out of 33 articles from the selected issue
Highlight Review
  • Atsushi Kobayashi, Masako Kato
    2017 Volume 46 Issue 2 Pages 154-162
    Published: February 05, 2017
    Released: February 05, 2017
    JOURNALS RESTRICTED ACCESS

    Extensive studies of luminescent copper(I) complexes were conducted, revealing that some of them exhibit interesting chromic luminescence in response to external stimuli such as temperature, vapor, light, and mechanical force. In this review, recent progress in the field of luminescent chromic copper(I) complexes is discussed. Tetranuclear copper(I) clusters with a cubane-type {Cu4I4} core are the most prominent group, which shows thermochromic, vapochromic, and mechanochromic luminescence, and their responsiveness to external stimuli greatly depends on coordinating organic ligands. Coordination polymerization of copper(I) cluster cores using organic linkers provides new luminescent thermochromic and vapochromic materials with behavior strongly dependent on the flexibility of the framework. The diversity of the cluster core structure and the lability to the ligand exchange are also useful to derive unique behaviors of photochromic and vapochromic response. In addition to such stimuli-responsive luminescence, the mechanochemical synthesis of highly luminescent copper(I) complexes is introduced, since the phenomenon is closely related to the mechanochromic luminescence and this approach allows the preparation of an emission layer directly on the substrate.

    Luminescent copper(I) complexes have been extensively studied, and some of them exhibit interesting chromic luminescence in response to external stimuli such as temperature, vapor, light, and mechanical force. In this review, the recent progress in the field of luminescent chromic copper(I) complexes is introduced. Fullsize Image
     
  • Michito Yoshizawa, Masahiro Yamashina
    2017 Volume 46 Issue 2 Pages 163-171
    Published: February 05, 2017
    Released: February 05, 2017
    JOURNALS RESTRICTED ACCESS

    In contrast to broad applications of small aromatic rings and π-conjugated wire-like units, the use of large polyaromatic rings in coordination nanostructures has been less developed to date. This review article describes the recent progress of coordination-driven cages and capsules with multiple polyaromatic panels, such as anthracene, pyrene, and perylene derivatives. In the well-defined cavities, intriguing chemical phenomena can be observed through enhanced interactions with the polyaromatic frameworks.

    This review article describes the recent progress of coordination-driven cages and capsules with multiple polyaromatic panels, such as anthracene, pyrene, and perylene derivatives. In the well-defined cavities, intriguing chemical phenomena can be observed through enhanced interactions with the polyaromatic frameworks. Fullsize Image
     
Letter
Editor’s Choice
Letter
Editor’s Choice
  • Izumi Okamura, Soyoung Park, Ryota Hiraga, Seigi Yamamoto, Hiroshi Sug ...
    2017 Volume 46 Issue 2 Pages 245-248
    Published: February 05, 2017
    Released: February 05, 2017
    JOURNALS RESTRICTED ACCESS

    Herein, we describe the synthesis, photophysical characterization, and DNA incorporation of a fluorescent nucleobase analogue, thieno[3,4-d]-pyrimidine T-mimic deoxynucleoside, thdT. thdT exhibits comparable thermal stability and selectivity of base pairing to that of natural T and noteworthy photophysical behaviors depending on its microenvironments in DNA. A thio-analogue of thymidine triphosphate, thdTTP, has been synthesized and enzymatically incorporated into DNA using naturally occurring polymerases and replication systems with assistance from dTTP. The present results show the utility of thdT as a fluorescent surrogate of thymidine for further applications.

Letter
Editor’s Choice
  • Hyung Do Kim, Yoshihiro Miyamoto, Hirofumi Kubota, Toshihiko Yamanari, ...
    2017 Volume 46 Issue 2 Pages 253-256
    Published: February 05, 2017
    Released: February 05, 2017
    JOURNALS RESTRICTED ACCESS

    Organic–inorganic perovskite solar cells based on tin halides exhibit a small open-circuit voltage (VOC) because of a large photon energy loss from band-gap energy, as large as 0.8–1.0 eV. In this study, we discussed the origin of the VOC loss in CH3NH3SnI3-based devices by measuring the temperature dependence of VOC. As a result, we found that the large loss in VOC is mainly due to the surface recombination at the interface rather than the bulk recombination in the perovskites.

Letter
feedback
Top