An organic dye of formula: wherein: R 1 and R 2 are selected independently from substituted aryls, the substituents being selected from alkyl, alkoxyl, aryl, arylated alkyl, alkylated aryl, and alkoxylated aryl; R 3, R 4, R 5 and R 6 are, independently one from the other, selected from a hydrogen atom, alkyl, alkoxyl, aromatic hydrocarbons, or heterocycles, wherein said alkyl, alkoxyl, aromatic hydrocarbon or heterocycle are unsubstituted, and wherein one or more of R 3, R 4, R 5 and R 6 may also be selected from halogen; R comprises up to ten different successive moieties, which are selected independently one from the other from the moieties represented in formulae to below: wherein: n is 1; R 49, R 50, R 53, R 54, R 57, R 58, R 59, R 60, R 65, R 66 are carbon atom; R 7 to R 66, with the exception of R 49, R 50, R 53, R 54, R 57, R 58, R 59, R 60, R 65, R 66, are selected, independently one from the others, from H, hydroxyl, nitryl, amido, acyl, alkyl, cycloalkyl, alkoxyl, aromatic hydrocarbons and their derivatives, alkylsulfonyl, alkylthio, ester group, alkyl halide, halogen, sulfonyl, cyano, alkenyl, acyloxyl, carboxyl and heterocycles; A in the compound of formula is an acceptor group selected from a cyano group, an acyl group, an aldehyde group, a carboxyl group, an acylamino group, a sulfonic acid group, a nitryl group, and a quaternary ammonium group; B is selected a carboxyl group, a phosphorus acid group, a sulfonic acid group, a hypophosphorous acid group, a hydroxyl group, a carboxylic acid group, a boric acid group, and a squaric acid group. R 1 and R 2 are selected independently from substituted aryls, the substituents being selected from alkyl, alkoxyl, aryl, arylated alkyl, alkylated aryl, and alkoxylated aryl; R 3, R 4, R 5 and R 6 are, independently one from the other, selected from a hydrogen atom, alkyl, alkoxyl, aromatic hydrocarbons, or heterocycles, wherein said alkyl, alkoxyl, aromatic hydrocarbon or heterocycle are unsubstituted, and wherein one or more of R 3, R 4, R 5 and R 6 may also be selected from halogen; R comprises up to ten different successive moieties, which are selected independently one from the other from the moieties represented in formulae to below: wherein: n is 1; R 49, R 50, R 53, R 54, R 57, R 58, R 59, R 60, R 65, R 66 are carbon atom; R 7 to R 66, with the exception of R 49, R 50, R 53, R 54, R 57, R 58, R 59, R 60, R 65, R 66, are selected, independently one from the others, from H, hydroxyl, nitryl, amido, acyl, alkyl, cycloalkyl, alkoxyl, aromatic hydrocarbons and their derivatives, alkylsulfonyl, alkylthio, ester group, alkyl halide, halogen, sulfonyl, cyano, alkenyl, acyloxyl, carboxyl and heterocycles; A in the compound of formula is an acceptor group selected from a cyano group, an acyl group, an aldehyde group, a carboxyl group, an acylamino group, a sulfonic acid group, a nitryl group, and a quaternary ammonium group; B is selected a carboxyl group, a phosphorus acid group, a sulfonic acid group, a hypophosphorous acid group, a hydroxyl group, a carboxylic acid group, a boric acid group, and a squaric acid group. n is 1; R 49, R 50, R 53, R 54, R 57, R 58, R 59, R 60, R 65, R 66 are carbon atom; R 7 to R 66, with the exception of R 49, R 50, R 53, R 54, R 57, R 58, R 59, R 60, R 65, R 66, are selected, independently one from the others, from H, hydroxyl, nitryl, amido, acyl, alkyl, cycloalkyl, alkoxyl, aromatic hydrocarbons and their derivatives, alkylsulfonyl, alkylthio, ester group, alkyl halide, halogen, sulfonyl, cyano, alkenyl, acyloxyl, carboxyl and heterocycles; A in the compound of formula is an acceptor group selected from a cyano group, an acyl group, an aldehyde group, a carboxyl group, an acylamino group, a sulfonic acid group, a nitryl group, and a quaternary ammonium group; B is selected a carboxyl group, a phosphorus acid group, a sulfonic acid group, a hypophosphorous acid group, a hydroxyl group, a carboxylic acid group, a boric acid group, and a squaric acid group.