title: [Reflectance spectra of J-aggregates of anionic-cationic cyanine dyes adsorbed on AgBrI microcrystal].
abstract: Spectral sensitivity is a key technology of modern photography. Because J-aggregates of cyanine dye exhibit sharp absorption bands (i.e., J-band), they are important sensitizers. In this article, the J-aggregation behavior of two kinds of anionic-cationic cyanine dyes adsorbed on the AgBrI cubic microcrystals was studied. The reflectance spectral curves of J-aggregating dyes were measured by UV-Vis. spectrophotometer, and were compared with the J-aggregation of anionic and cationic cyanine dyes. The results show that the reflectance spectra of J-aggregates of anionic-cationic cyanine dyes adsorbed on AgBrI microcrystals have peak wavelengths of anionic and cationic cyanine dyes. Anionic-cationic cyanine dyes have two sensitivity regions, including both the sensitivity region of anionic cyanine dye and the sensitivity region of cationic cyanine dye.
authors.affiliation: College of Physics Science and Technology, Hebei University, China Lucky Film Co., Baoding, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Meng
authors.forename: Xiao-wei
authors.initials: XW
authors.lastname: Li
authors.forename: Jing
authors.initials: J
authors.lastname: Zou