Photographic elements are described which employ nondiffusible compounds having a releasable 6-(2-thienylazo)-3-pyridinol cyan dye moiety or precursor thereof, the compounds containing:
(a) in the 3-position of the thienylazo moiety a carboxy group, a salt thereof or a hydrolyzable precursor thereof; and
(b) a ballasted carrier moiety which is capable of releasing the diffusible 6-(2-thienylazo)-3-pyridinol dye moiety or precursor thereof under alkaline conditions.
所述照相元件采用了具有可释放的 6-(2-
噻吩基偶氮)-3-
吡啶醇青色
染料分子或其前体的非扩散性化合物,这些化合物包含:
(a) 在
噻吩偶氮基 3-位上的羧基、其盐或其可
水解前体;以及
(b) 在碱性条件下能释放可扩散的 6-(2-
噻吩偶氮)-3-
吡啶醇
染料分子或其前体的压载载体分子。