NOVELTY - Triazine compound (I) is new.    USE - For electrophotographic photoreceptors, photoelectric converters, solar cells, image sensors, dye lasers and (preferably) electroluminescent devices (claimed) useful in color display panels, e.g. mobile phones, televisions and personal computer screens.    ADVANTAGE - The compound provides excellent light emitting characteristics and durability. It exhibits intense fluorescence in the solid state and has excellent electric-field-applied light emission characteristics. It eliminates decrease in brightness and life caused by quenching.    DETAILED DESCRIPTION - A triazine compound of formula (I) is new.    W = structure (Ia); and    X, Y = aryl group or heteroaryl group, preferably structures (Ia)-(Ic).    R11-R17, R11'-R17', R41-R42 = H, E, 6-18C aryl (optionally substituted by G), 1-18C alkyl (optionally substituted by E and/or interrupted by D) or 7-18C aralkyl (optionally substituted by G);    R41'-R42', R44-R47, R44'-R47' = as above;    or R11'+R12, R12'+R13, R15'+R16 = divalent group, i.e. O, S, -CR18R19-, -SiR18R19- or -C(R49)=C(R50)-;    or R16'+R17, R44'+R46, R45'+R47 = as above;    or R groups on same ring = -C(R33)=C(R32)-C(R31)=C(R30)-;    R14 = H, 2-30C heteroaryl or 6-30C aryl (both optionally substituted by (G), or 1-18C alkyl optionally substituted by E and/or interrupted by D, especially (Id)-(If);    R43, R48 = H, E, 1-18C alkyl (optionally substituted by E and/or interrupted by D), 2-30C heteroaryl (optionally substituted with G) or 7-18C aralkyl (optionally substituted with G);    D = -CO-, -COO-, -OCOO-, -S-, -SO-, -SO2-, -O-, -NR5-, -SiR61R62-, -POR5-, -CR63=CR64- or -C-triple bond-C-;    E = -OR5. -SR5, -NR5R6, -COR8, -COOR7, -OCOOR7, -CONR5R6, -CN or halo;    G = E or 1-18C alkyl;    R5-R6 = 6-18 aryl (optionally substituted by 1-18C alkyl), 1-18C alkoxy, or 1-18C alkyl interrupted by -O-, or structure (II); or R5-R6 together form 5-6 membered ring, especially (IIa);    R7 = 6-18 aryl (optionally substituted by 1-18C alkyl), 1-18C alkoxy, or 1-18C alkyl interrupted by -O-;    R8 = 7-12C alkylaryl, 1-18C alkyl or 1-18C alkyl interrupted by -O-;    R18-R19 = 1-18C alkyl, 1-18C alkoxy, 6-18C aryl or 7-18 aralkyl;    R21-R27 = H, E, 1-18C alkyl optionally substituted by E and/or interrupted by D, 7-18C aralkyl (optionally substituted with G);    R30-R33, R49-R50 = H, 1-18C alkyl (optionally substituted by E and/or interrupted by D), 6-18C aryl or 6-16C aryl substituted by E;    R14-R19 = 1-18C alkyl, 1-18C alkoxy, 6-18C aryl, 7-18C aralkyl;    R61-R62 = 6-18 aryl (optionally substituted by 1-18C alkyl), 1-18C alkoxy, or 1-18C alkyl interrupted by -O-; and    R63-R64 = H, 6-18C aryl (optionally substituted by 1-18C alkyl), 1-18C alkoxy, or 1-18C alkyl interrupted by -O-.    Preferred Definitions are in the Definition (Preferred Definitions) Field.