Recent Advances in Organic Compounds for Photographic Materials. Study on Aggregation of Azomethine Dyes derived from Pyrazolotriazoles.

DOI

Bibliographic Information

Other Title
  • 写真用有機化合物の進歩　ピラゾロトリアゾールアゾメチン色素の会合解析

Abstract

The aggregation of pyrazolotriazoloazomethine dyes (PT1-PT7) was studied by using 1H NMR spectra. Chemical shift (σ) of 1H NMR spectra deviates to a high magnetic field due to the change of the proton environment caused by the aggregation of the molecules. Molecular aggregation numbers were determined by means of maximum slope method based on the concentration dependence of the σ. Dyes were classified into three types: multi aggregation, two-molecule aggregation, and no aggregation. Aggregation constant (log K) of PT2 and PT3, which perform two-molecule aggregation, were 2.31 and 1.48 respectively in deuteriochloroform at 293K.

Journal

Details 詳細情報について

  • CRID
    1390282681545116800
  • NII Article ID
    130004284128
  • DOI
    10.11454/photogrst1964.57.349
  • ISSN
    18845932
    03695662
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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