| abstract |
Spectral sensitizing dyes, and silver halide photographic elements incorporating them, which dyes have the formula: ##STR1## wherein: X1 and X2 each independently represent the atoms necessary to complete a 5- or 6-membered heterocyclic nucleus (preferably benzo-condensed), and X1 may be further substituted and X2 substituted or unsubstituted; n n is a positive integer from 1 to 4, n p and q each independently represents 0 or 1, n each L independently represents a substituted or unsubstituted methine group, n R1 and R2 each independently represents substituted or unsubstituted aryl or substituted or unsubstituted alkyl, n Z1 represents a substituted or unsubstituted pyrrole or furan containing group; n W1 is a counterion as needed to balance the charge of the molecule. |