Aggregated dyes for radiation-sensitive elements

A photographic element comprising at least one light sensitive layer and at least one light insensitive layer and containing a dye of the Formula (I):

• wherein X is oxygen or sulfur;
• R1-R4 each independently represent a hydrogen atom or an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group or an unsubstituted or substituted heteroaryl group;
• L1, L2 and L3 each independently represent substituted or unsubstituted methine groups;
• M+ represents a proton or an inorganic or organic cation;
• and n is 0, 1, 2 or 3 wherein the dye is in aggregated form and in aggregated form has an absorption halfbandwidth of less than 55 nm;
• with the proviso that at least one of R1 or R2 represents a phenyl group substituted with at least one OH group.