A silver halide photographic material which contains methine dyes represented by formula (I) to obtain high sensitivity and excellent storage stability:
wherein Z₁ and Z₂ each represents atoms necessary to complete a 5- or 6-membered nitrogen-containing hetero ring; Q represents atoms necessary to complete a 5- or 6-membered ring; R₁ represents an alkyl group, an aryl group or a heterocyclyl group; R₂ and R₃ each represents an alkyl group; L₁, L₂, L₃, L₄, L₅ and L₆ each represents a methine group; n₁ and n₂ each represents 0 or 1; M represents an ion for neutralizing electric charges; and m is a number necessary for neutralization of electric charges in the dye molecule, including 0.
Diffusion transfer type silver halide photographic light-sensitive material
申请人:FUJI PHOTO FILM CO., LTD.
公开号:EP0559048A1
公开(公告)日:1993-09-08
A diffusion transfer type silver halide photographic light-sensitive material contains a dye-providing compound having a dye portion temporarily shifted to a shorter wavelength. The light-sensitive material contains the dye-providing compound represented by the following Formula (I):
REDOX-NuP-E-G-Dye' (I)
wherein G represents an auxochrome of a dye; Dye' represents a group of atoms which remains after the auxochrome is removed from the dye; -G-Dye' represents a group of atoms which is converted to a diffusible dye by cleavage of the bond between G and E; REDOX represents an oxidative group or a reductive group which allows the bond between REDOX-NuP to be cleaved by an oxidation-reduction reaction; NuP represents a nucleophilic group which is released by a bond cleavage reaction between REDOX and NuP triggered by the oxidation-reduction reaction; E represents an electrophilic group which will react with the nucleophilic group NuP and cause the bond between G and E to be cleaved; and REDOX-NuP-E provides the compound represented by Formula (I) with a diffusibility.
一种扩散转移型卤化银感光材料含有一种染料提供化合物,其染料部分暂时转移到较短的波长。该感光材料含有由下式(I)表示的染料提供化合物:
REDOX-NuP-E-G-Dye' (I)
其中,G 代表染料的辅助色素;Dye' 代表从染料中去除辅助色素后残留的原子团;-G-Dye' 代表通过裂解 G 和 E 之间的键而转化为可扩散染料的原子团;REDOX 代表氧化基团或还原基团,可通过氧化还原反应裂解 REDOX-NuP 之间的键;NuP 代表亲核基团,通过由氧化还原反应引发的 REDOX 与 NuP 之间的键裂解反应释放出来;E 代表亲电基团,将与亲核基团 NuP 反应并导致 G 与 E 之间的键裂解;REDOX-NuP-E 可提供具有扩散性的式 (I) 所代表的化合物。
DARENSBOURG, D. J.;GROETSCH, G., J. AMER. CHEM. SOC., 1985, 107, N 25, 7473-7476