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 89, Issue 1
Displaying 1-5 of 5 articles from this issue
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  • Synthesis and Properties of Substituted Polyacetylene Containing Azobenzene Moiety in the Side Group
    Shou SUGANO, Aya KUNITOMO, Hiroaki KOUZAI
    2016 Volume 89 Issue 1 Pages 2-5
    Published: January 20, 2016
    Released on J-STAGE: April 20, 2016
    DOIhttps://doi.org/10.4011/shikizai.89.2
    JOURNAL FREE ACCESS
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    We have synthesized monosubsituted acetylene with azobenzene moiety and then polymerized it with a Rh complex catalyst, [Rh(nbd)B(C6H5)4]2. The resulting polymer was a black powder with yield 63.3%. The relative Mw and Mw/Mn determined by GPC were 1.5×104 and 1.3. The polymer was soluble in organic solvents such as toluene, chloroform and THF. The obtained polymer could be confirmed to exhibit photoisomerization behavior when irradiated by ultraviolet or visible light. TGA measurement showed that the polymer had a high thermal stability with a thermal weight loss initiation temperature from 228℃.
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Digest
  • Applications of TiO2 Photocatalyst: Recent Trends and Future Prospects
    Tsuyoshi OCHIAI, Akira FUJISHIMA
    2016 Volume 89 Issue 1 Pages 6-10
    Published: January 20, 2016
    Released on J-STAGE: April 20, 2016
    DOIhttps://doi.org/10.4011/shikizai.89.6
    JOURNAL FREE ACCESS
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    Based on the market growth of industries related to photocatalysis, applications of TiO2 photocatalyst were divided into three areas: self-cleaning, environmental cleanup, and artificial photosynthesis. The present paper describes recent trends and future prospects of each area, especially environmental cleanup with our recent contributions and theoretical strategies in this area.
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  • Psychology of Vision:
    Visual Illusions in Daily Life
    Kazunori MORIKAWA
    2016 Volume 89 Issue 1 Pages 11-16
    Published: January 20, 2016
    Released on J-STAGE: April 20, 2016
    DOIhttps://doi.org/10.4011/shikizai.89.11
    JOURNAL FREE ACCESS
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    When our visual perception of reality differs from the physical reality, it is called a visual illusion. We discuss various visual illusions observed in daily life from the viewpoint of visual psychology. Some areas of culture, such as clothing and cosmetics (makeup), take advantage of visual illusions so as to make the human body and face look more attractive. We review some quantitative studies on visual illusions induced by makeup and clothing. Other illusions considered in this article include the bicolor illusion, size contrast illusion, and amodal completion illusion in clothes and the Delboeuf illusion in some merchandize.
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Serial Lecture
  • Self-Healing Corrosion Protective Coatings
    Akihiro YABUKI
    2016 Volume 89 Issue 1 Pages 17-21
    Published: January 20, 2016
    Released on J-STAGE: April 20, 2016
    DOIhttps://doi.org/10.4011/shikizai.89.17
    JOURNAL FREE ACCESS
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    Corrosion protective coatings have been widely applied as a surface treatment to prevent corrosion of various metallic materials, such as carbon steels, aluminum alloys and magnesium alloys. One of the most important characteristics of these coatings is the ability to self-heal. If a self-healing coating suffers mechanical damage and corrosive species in the environment begin to degrade the bare metal surface, the damaged surface is automatically repaired by a chemical component of the coating. Chromate conversion coatings have self-healing properties, however, environmental concerns have necessitated the reduction and discontinuation of chromate-based protective coatings in recent years. This paper describes recently developed self-healing coatings ‒ self-healing coatings using a fluorine polymer and self-healing coatings using a pH-sensitive organic agent.
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  • The World of Color Science and Color Chemistry
    Yutaka MASUDA
    2016 Volume 89 Issue 1 Pages 22-28
    Published: January 20, 2016
    Released on J-STAGE: April 20, 2016
    DOIhttps://doi.org/10.4011/shikizai.89.22
    JOURNAL FREE ACCESS
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    Color can be said to have two faces. We perceive the light that an object reflects as a color. That is why color is called a psychophysical quantity. On the other hand, the coloring material exhibits various changes resulting from the absorption of light. Color science is the study of reflected light which, through human sensation, acts as a driving force for economic activity, whereas colorant chemistry takes into account studies of light absorption and color generation as well as weathering resistance and thermal characteristics. The color design industry developed from both of these important and related concepts.
    Here, using a ruby red as an example, we explain how high quality colors for automotives can be designed, and how that design itself becomes a commercial product through its application to the vehicle.
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