Methine dyes, manufacturing methods thereof, and silver halide photographic materials containing same dyes

Abstract

Methine dye compounds represented by formula (1) and highly sensitive silver halide photographic materials containing these compounds: Dye1-(L1-(Dye2)m1)m2 (CI1)y1  (1) wherein L1 represents a linkage group represented by formula (2), m1 represents an integer of 1 to 5, m2 represents an integer of 1 to 5, Dye1 represents a first chromophore, Dye 2 represents a second chromophore, CI1 represents an ion for neutralization of electric charge, and y1 represents a number of the ions required for neutralization of electric charges; -G1-A1-Y1-G2-Y2-A2-G3-  (2) wherein A1 and A2 each individually represent a carbonyl group or a sulfonyl group, Y1 and Y2 each individually represent —O—, —S— or —NR1—, R1 represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or a heterocyclic group, and G1, G2 and G3 each individually represent a divalent linkage group.

Dependencies are inferred from the claim text.