Photofading of Solution of Azomethine Type Dye Forming Color Photographic Image. Alcoholic Solution of Model Magenta Dye with Carbonyl Compound.

DOI
  • MIWA Takuji
    Remote Sensing and Image Research Center, Chiba University
  • ASAHI Youichi
    Remote Sensing and Image Research Center, Chiba University

Bibliographic Information

Other Title
  • カラー写真像を形成しているアゾメチン型色素溶液の光変退色　モデルマゼンタ色素‐カルボニル化合物‐アルコール溶液

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Description

In order to elucidate photofading mechanism of aerated alcoholic solution of model magenta dye with carbonyl compound (CCPD), 1) effect of acid on photofading of alcoholic solution of model magenta dye with CCPD, 2) effect of NaOH, 3) effect of oxygen concentration, 4) absorption change of the photolytically faded solution by keeping in dark, addition of NaOH-EtOH solution and light irradiation after unsealing, are examined at various conditions. Also photofadingproduct in aerated alcoholic solution of model magenta dye with CCPD is examined by mass spectroscopy. It is confirmed that photofading of the solution is initiated by ketyl radical of CCPD and following reactions resulted in formation of oxygenated compound and degradation of the dye are started probably from mono-hydrogenated dye radical in the same way as aerated solution of model cyan dye. Moreover it is estimated that the most part of the difference in details between fading reactions of model magenta and cyan dyes is caused by higher reactivity of mono-hydrogenated radical and leuco-form of magenta dye with oxygen in comparison with cyan dye.

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Details 詳細情報について

  • CRID
    1390001206568716800
  • NII Article ID
    130004284026
  • DOI
    10.11454/photogrst1964.55.61
  • ISSN
    18845932
    03695662
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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