Method for stabilizing organic substrate materials including photographic dye images to light and a color diffusion transfer material

An element comprising an organic substrate material which is stabilized against the action of light and comprises the combination of at least one of the complexes represented by following formulae I, II, III, or IV with at least one organic substrate material in an amount effective to stabilize the substrate material to light;

• ##STR16## wherein M represents Cu, Co, Ni, Pd, or Pt;
• R.sup.1, R.sup.2, R.sup.3, or R.sup.4 each represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an aryl group, a cycloalkyl group, or a heterocyclic group, each of which can be bonded directly or through a divalent connecting group to the carbon atom of a benzene ring, or R.sup.1 and R.sup.2 ;
• R.sup.2 and R.sup.3 ;
• or R.sup.3 and R.sup.4 combine to represent the non-metallic atoms necessary to complete a 6-membered ring;
• R.sup.5 and R.sup.8 each represents a hydrogen atom, an alkyl group, or an aryl group;
• R.sup.6 represents a hydrogen atom, an alkyl group, an aryl group, or a hydroxyl group;
• R.sup.7 represents an alkyl group or an aryl group;
• and Z represents the non-metallic atoms necessary to complete a 5-membered ring or a 6-membered ring, wherein said organic substrate material is a photographically useful dye or fluorescent whitening agent having an absorption maximum at about 300 nm to about 800 nm and wherein said dye is an anthraquinone dye, a quinoneimine dye, an azo dye, a methine dye, a polymethine dye, an indoamine dye, an indophenol dye, or a formazan dye, said at least one compound of formulae I to IV not adversely affecting color hue or color purity of the photographically useful dye or fluorescent whitening agent.