摘要
本文研究了５－位不同取代基的噻碳菁和吲哚碳菁染料对其在立方型颗粒和Ｔ－颗粒溴化银微晶上吸附能力的影响，并采用ＡＣＦＥＭ（ＡｎａｌｙｔｉｃａｌＣｏｌｏｒＦｌｕｏｒｅｓｃｅｎｃｅＥｌｅｃｔｒｏｎＭｉｃｒｏｓｃｏｐｙ）研究了上述结构染料对其吸附在溴化银微晶所形成的Ｊ－聚集体尺寸分布的影响．实验结果表明，对吲哚碳菁染料来说，立方体溴化银微晶表面的吸附能力较Ｔ－颗粒溴化银微晶表面的吸附能力强；但对噻碳菁染料来说则相反，它们在Ｔ－颗粒溴化银微晶表面的吸附能力较立方体溴化银微晶表面的吸附能力强．另外，对５－位不同取代基的噻碳菁染料而言，无论是在立方型颗粒或Ｔ－颗粒溴化银微晶上的吸附能力来说，含取代基（无论４－取代基是吸电子型还是推电子型）的噻碳菁染料较未取代的噻碳菁染料强；而５－位取代基是吸电子型的噻碳菁染料更有利于其吸附在Ｔ－颗粒溴化银微晶表面．此外，本文还进一步证明了溴化银微晶表面上染料Ｊ－聚集体的生长过程是符合奥斯瓦尔特成熟过程的．吲哚碳菁染料在Ｔ－颗粒溴化银微晶上形成的Ｊ－聚集体的平均尺寸明显大于在立方体溴化银微晶上形成的Ｊ－聚集体的平均尺寸．吸附在立方体溴化银微晶上的５－不同取代基的噻碳菁染料对其形成Ｊ－聚集体?
ffects of thiacarbocyanine and indocarbocyanine dye with different substituents on absorption to AgBr microcrystal and on size distributions of Jaggregates by ACFEM were investigated. The results show that adsorbability of indocarbocyanin iodide dye on the cubic AgBr is larger than that on the Tgrain AgBr. But adsorbability of thiacarbocyanine triethyl ammonium salt dye on the Tgrain AgBr is larger than that on the cubic AgBr. In addition, adsorbability of 5substituted thiacarbocyanine dye either on Tgrain or on cubic AgBr much larger than that of 5unsubstituted thiacarbocyanine dye. In present paper, It is also proved further that the growth of Jaggregates on AgBr could be regarded as the Ostwald ripening of the Jaggregate and that Nethyl substituent leads to strong Jaggregation. It also indicated that the average sizes of J aggregations of 5substituted thiacarbocyanine dye are larger than that of 5unsubstituted one.
出处
《感光科学与光化学》
CSCD
1997年第4期327-334,共8页
Photographic Science and Photochemistry
