中文摘要：

染料J-聚集体对于现代彩色信息记录与存储材料、生物光电子器件、光合作用、太阳能转换与存储等方面具有十分重要的应用前景和理论意义。感绿菁染料在适当浓度时，对立方体氯化银微晶有增感效应，文章应用吸收光谱法对增感后的氯化银微晶样品进行了研究。研究表明，增感染料浓度低于0．02mL（染料浓度为5．0mg·mL^-11）／40g乳剂时，感绿菁染料在立方体氯化银表面不形成J-聚集体，吸收光谱没有J-聚集体吸收峰出现；当染料浓度高于0．2mL（染料浓度为5．0mg·mL^-1）／40g乳剂时，染料开始在立方体氯化银微晶表面聚集并形成J-聚集体，吸收光谱有J-聚集体吸收峰出现。随染料浓度进一步增加，J-聚集体的吸收明显加强，吸收峰有微小的红移。

英文摘要：

The silver chloride microcrystals emulsion which are sensitized by the adsorbed green-sensitive cyanine dye of different concentration, was studied by using the absorption spectrum. The experiments show that when the sensitizing concentration is less than 0. 02 mL（5.0 mg·mL^-1 ）/40 g emulsion, the dye J-aggregate is not formed on the surface of silver chloride microcrystals; when the dye concentration is more than 0.2 mL（5.0mg·mL^-1/40 g emulsion, the dye J-aggregate is formed on the surface of silver chloride microcrystals; compare to the M-state of dye, the maximal absorption peak of J-aggregate shifted to a longer wavelength by about 50 nm. It was found, when the J-aggregate is formed, the absorption in the wavelength range of more than 450 nm is increased.