Journal of the Japan Society of Colour Material
Online ISSN : 1883-2199
Print ISSN : 0010-180X
ISSN-L : 0010-180X
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Volume 96, Issue 10
Displaying 1-4 of 4 articles from this issue
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Original Technical Paper
  • Aggregation-induced Emission and Solid-State Fluorescence of 2-(4-(N,N-diphenylamino)phenyl)tryptanthrin
    Jun KAWAKAMI, Mizuki HARADA, Yutaro AKAGI, Masahiro TAKAHASHI, Shun OH ...
    Article type: Original Technical Paper
    2023 Volume 96 Issue 10 Pages 333-337
    Published: October 20, 2023
    Released on J-STAGE: October 27, 2023
    DOIhttps://doi.org/10.4011/shikizai.96.333
    JOURNAL FREE ACCESS
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    2-(4-(N,N-diphenylamino)phenyl)tryptanthrin (T2PhNPh2) was synthesized and its photophysical properties were examined. Among the seven examined solvents of various polarities, T2PhNPh2, which is non-planar only showed weak red fluorescence in non-polar toluene and 1,4-dioxane. This was assumed to be due to thermal deactivation as a result of the rotation of the phenyl groups’ stimulation of internal conversion in calculation using the density functional theory. Although T2PhNPh2 was non-fluorescent in tetrahydrofuran (THF), aggregation-induced emission was shown to cause fluorescence in water/THF solutions with more than 65 vol% water content. Additionally, fluorescence was observed at ca. 650 nm in the solid state.

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Current Topics
  • The Design of Thermoresponsive Polymeric Particles
    Syuuhei KOMATSU, Akihiko KIKUCHI
    2023 Volume 96 Issue 10 Pages 338-343
    Published: October 20, 2023
    Released on J-STAGE: October 27, 2023
    DOIhttps://doi.org/10.4011/shikizai.96.338
    JOURNAL RESTRICTED ACCESS
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    Thermoresponsive polymeric particles have a wide range of applications in biomaterials engineering, diagnostic materials, and drug delivery systems (DDS). By precise design of polymeric particles, it is possible to provide different functions to both the surface and particle core. Especially in DDS, it has been recently reported that these functions can be used to promote or inhibit the uptake of polymer particles into cells. In this paper, we review the development of biomaterials using thermoresponsive particles with the ability to change surface properties and core shape in response to thermoresponsive behavior.

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Serial Lecture
Serial Lecture
  • Next Developments in Perovskite Solar Cells
    Ryousuke ISHIKAWA
    Article type: Serial Lecture
    2023 Volume 96 Issue 10 Pages 348-353
    Published: October 20, 2023
    Released on J-STAGE: October 27, 2023
    DOIhttps://doi.org/10.4011/shikizai.96.348
    JOURNAL RESTRICTED ACCESS
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    Toward the realization of a carbon-neutral society, there are increasing expectations for perovskite solar cells as next-generation solar cells that can be coated. This article introduces our perovskite solar cell research on 1) hole-transport layer-free perovskite solar cells with improved durability, 2) through-hole current collection technology for film-type modules, 3) lightweight and flexible perovskite/silicon tandem solar cells, and 4) the application of wide-gap perovskite solar cells to optical wireless power transmission.

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