- 作者: 戴志飛 ; 彭必先 ; 范樓珍 ; 李永舫
- 作者服務機構: Inst. of Photographic Chemistry, Chinese Academy of Sciences, Beijing, China
- 中文摘要: The correlation of photographic performance of meso-chloro-substituted indocarbocyanine dyes having different substituent groups with their electrochemical properties and aggregation behavior in solutions and crystals and on emulsion grains was investigated. The experimental results indicate that the dyes form easily H-rather than J-aggregates no matter what they are on AgBrI emulsions or in solutions and crystals. All the lowest vacant electronic energy level of the dyes, E/sub LV/, are much lower than the energy of conduction band of AgBrI (E/sub CB/)(-3.23 ev), so it is very easy for the dyes to trap electrons from the surface of silver halide, leading to strong desensitization by the electron-trapping process. The desensitization by the dyes depends fundamentally on their amount and structure, especially on the nature of substituents.
- 英文摘要: --
- 中文關鍵字: Indodicarbocyanine; Electrochemical Property; Aggregation; Photography; Silver Halide; Desensitizer
- 英文關鍵字: 碘二羰氰;電化學性質;凝集;攝影;鹵化銀;去敏感劑