Abstract: Disclosed are styryl dyes of formula wherein R1, R2, R3, R?1, R?2 and R?3 independently of each other are hydrogen; —NH(CO)—C1-C5alkyl; —N(C1-C5alkyl)(C1-C5alkyl-CN); C1-C6alkoxy; a heterocyclic radical; or R1 and R2 or R?1 and R?2 together form a 5- to 10-membered, monocyclic, carbocyclic or heterocyclic ring; wherein at least one of R1, R2, R3, R?1, R?2 and R?3 is different from hydrogen; Q and Q? independently from each other are the direct bond; *—C(O)—*; *—C(O)O—*; *—OCO—*; *—N(R4)—*; ?*—C(O)N(R6)—*; or *—(R6)NC(O)—*; and R4, R5 and R6 independently from each other are hydrogen; C1-C14alkyl; C2-C14alkenyl; C6-C12aryl; C6-C12aryl-C1-C10alkyl; or C1-C10alkyl(C5-C12aryl); X and X? are *—(CH2)m—*; Y1 and Y2 independently from each other are C1-C10alkylene; C5-C10cycloalkylene; C5-C12arylene; or C5-C12arylene-(C1-C10alkylene); An? is an anion; m is a number from 1 to 8; n is 0, or 1; and p is 0, or 1.

Abstract: Disclosed are styryl dyes of formula wherein R1, R2, R3, R?1, R?2 and R?3 independently of each other are hydrogen; —NH(CO)—C1-C5alkyl; —N(C1-C5alkyl)(C1-C5alkyl-CN); C1-C6alkoxy; a heterocyclic radical; or R1 and R2 or R?1 and R?2 together form a 5- to 10-membered, monocyclic, carbocyclic or heterocyclic ring; wherein at least one of R1, R2, R3, R?1, R?2 and R?3 is different from hydrogen; Q and Q? independently from each other are the direct bond; *—C(O)—*; *—C(O)O—*; *—OCO—*; *—N(R4)—*; *—C(O)N(R6)—*; or *—(R6)NC(O)—*; and R4, R5 and R6 independently from each other are hydrogen; C1-C14alkyl; C2-C14alkenyl; C6-C12aryl; C6-C12aryl-C1-C10alkyl; or C1-C10alkyl(C5-C12aryl); X and X? are *—(CH2)m—*; Y1 and Y2 independently from each other are C1-C10alkylene; C6-C10cycloalkylene; C5-C12arylene; or C6-C12arylene-(C1-C10alkylene); An? is an anion; m is a number from 1 to 8; n is 0, or 1; and p is 0, or 1.