Dye compounds

A dye compound represented by Formula I or II:

• wherein Ar1 is C6-C20 aryl or C2-C20 heteroaryl which is optionally substituted with one or more substituents selected from hydrogen, deuterium, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted arylalkyl, substituted or unsubstituted aryloxy, substituted or unsubstituted aryloxyalkyl, substituted or unsubstituted alkoxy, substituted or unsubstituted alkoxyalkyl, halogen, cyano, nitro, hydroxyl, aldehyde, amino, amide, hydrazine, thiol, acetal, ketal, phosphoryl, phosphate, phosphonate, sulfohydroxyl, sulfonate, sulfate, carboxylate, azido, aminothiocarbonyl, carboxyl, carboxylic acid, ketone, sulfhydryl, acyl chloride, sulfonic acid, polyalkylene oxide, and polyethylene glycol, the alkyl, alkenyl, alkynyl, aryl, heteroaryl, arylalkyl, aryloxy, aryloxyalkyl, alkoxy, and alkoxyalkyl being optionally further substituted with one or more substituents selected from halogen, cyano, nitro, amine, hydroxyl, aldehyde, amino, amide, hydrazine, thiol, acetal, ketal, phosphoryl, phosphate, phosphonate, sulfohydroxyl, sulfonate, sulfate, carboxylate, azido, aminothiocarbonyl, carboxyl, carboxylic acid, ketone, sulfhydryl, acyl chloride, sulfonic acid, polyalkylene oxide, and polyethylene glycol,
• each E is CR1 or N,
• Z1 is NR2R3, OR4 or SR5,
• X is O, S, NR8, SiR10R11, CR12R13 or Se,
• Y is CR14R15, NR16, O, S, Se, SiR17R18 or CR19R20═CR21R22,
• W is CR23R24, CR25R26═CR527R28, O, —[CR29R30—CR31R32]— or —[CR33R34—O]—,
• R23 to R34 are identical to or different from each other and are each independently hydrogen, deuterium, alkyl or acryloxy, or two adjacent substituents are optionally linked to each other to form an alicyclic hydrocarbon,
• two of R1 to R3 optionally form an alicyclic hydrocarbon ring or a monocyclic or polycyclic aromatic hydrocarbon ring with two of the adjacent substituents, and carbon atom of the alicyclic or aromatic hydrocarbon ring is optionally replaced by a substituent selected from N, S, O, Se, Te, Po, NR35, SiR36R37, GeR38R39, PR40, and BR41, or
• R1 to R8, R10 to R22 and R35 to R41 are identical to or different from each other and are each independently selected from hydrogen, deuterium, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted arylalkyl, substituted or unsubstituted aryloxy, substituted or unsubstituted aryloxyalkyl, substituted or unsubstituted alkoxy, substituted or unsubstituted alkoxyalkyl, halogen, cyano, nitro, hydroxyl, aldehyde, amino, amide, hydrazine, thiol, acetal, ketal, phosphoryl, phosphate, phosphonate, sulfohydroxyl, sulfonate, sulfate, carboxylate, azido, aminothiocarbonyl, carboxyl, carboxylic acid, ketone, sulfhydryl, acyl chloride, sulfonic acid, polyalkylene oxide, and polyethylene glycol, the alkyl, alkenyl, alkynyl, aryl, heteroaryl, arylalkyl, aryloxy, aryloxyalkyl, alkoxy, and alkoxyalkyl being optionally further substituted with one or more substituents selected from halogen, cyano, nitro, amine, hydroxyl, aldehyde, amino, amide, hydrazine, thiol, acetal, ketal, phosphoryl, phosphate, phosphonate, sulfohydroxyl, sulfonate, sulfate, carboxylate, azido, aminothiocarbonyl, carboxyl, carboxylic acid, ketone, sulfhydryl, acyl chloride, sulfonic acid, polyalkylene oxide, and polyethylene glycol, and
• A− is an anion or a cation represented by A+ as an organic or inorganic ion and is optionally absent;
• or
• wherein Ar1, E, X, Y, W, and R1 are as defined in Formula I, Z2 is NR6, O, S or O+R7, and R6 and R7 are as defined in Formula I.