Imaging Science and Photochemistry ›› 1997, Vol. 15 ›› Issue (4): 327-334.DOI: 10.7517/j.issn.1674-0475.1997.04.327

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EFFECTS OF THIACARBOCYANINE AND INDOCARBO-CYANINE DYE WITH DIFFERENT SUBSTITUENTS ON ABSORPTION TO AgBr MICROCRYSTAL AND SIZE DISTRIBUTION OF J-AGGREGATES

ZHAO Wenfang1, SAIJO H2, KOBAYASHI Y.2, SHIOJIRI M.1, YAN Wenpeng1, LI Qun1, PENG Bixian1   

  1. 1. Institute of Photographic Chemistry, Academia Sinica, Beijing 100101, P.R. China;
    2. Kyoto Institute of Technology, Matsugasaki, Sakyo-Ku, Kyoto 606, Japan
  • Received:1997-01-14 Revised:1997-05-05 Online:1997-11-20 Published:1997-11-20

Abstract: Effects of thiacarbocyanine and indocarbocyanine dye with different substituents on absorption to AgBr microcrystal and on size distributions of J-aggregates by ACFEM were investigated. The results show that adsorbability of indocarbocyanin iodide dye on the cubic AgBr is larger than that on the T-grain AgBr. But adsorbability of thiacarbocyanine triethyl ammonium salt dye on the T-grain AgBr is larger than that on the cubic AgBr. In addition, adsorbability of 5 substituted thiacarbocyanine dye either on T-grain or on cubic AgBr much larger than that of 5-unsubstituted thiacar bocyanine dye.In present paper,It is also proved further that the growth of J-aggregates on AgBr could be regarded as the Ostwald ripening of the J-aggregate and that N-ethyl substit uent leads to strong J-aggregation.It also indicated that the average sizes of J-aggregations of 5-substituted thiacarbocy anine dye are larger than that of 5-unsubstituted one.

Key words: cyanine dye, spectral sensitization dye, J-aggregation