will be to the present invention relates to a styryl sulfide dye of formula (1):whereinR 1 , R 1 , R 2 , R 2 , R 3 and R 3 is independently hydrogen One or more C 1 -C 5 alkoxy, halogen, -NH 2 , mono -C 1 -C 5 alkylamino, di -C 1 -C 5 alkylamino, -NO 2 or substituted by hydroxy The C 1 -C 20 alkyl or C 1 -C 20 alkyl C 3 -C 6 cycloalkyl -C (O) H -C (O) -C 1 -C 5 alkyl Halogen NO 2 OH One or more C 1 -C 5 alkyl, C 1 -C 5 alkoxy, halogen, -NH 2 , mono -C 1 -C 5 alkylamino, di -C 1 -C 5 alkylamino, -NO 2 is substituted by hydroxy or phenyl Or a radical -NR 4 R 5 , whereR 4 and R 5 are each independently hydrogen One or more C 1 -C 5 alkyl, C 1 -C 5 - alkyl, hydroxy, or - ( CO), which is substituted by -H C 1 -C 12 alkyl - (CO) -C 1 -C 5 alkyl Phenyl or phenyl moiety is one or more C 1 -C 5 alkyl, C 1 -C 5 alkoxy, halogen , -NH 2 , mono -C 1 -C 5 alkylamino, di -C 1 - C 5 alkylamino, -NO 2 , carboxyl, or phenyl which is substituted by hydroxy -C 1 -C 4 alkylW 1 , W1, W 2 , W 2 , W 3 , W 3 , W 4 or W 4 are each independently -CH- or -N + - gt Where W 1 / W1, W 2 / W 2 , W 3 / W 3 , W 4 / W 4 is one of -N + and And divalent radical -QZYSS-Y-Z-Q- each W 1 or W 2 and W 1 , or W 2 are each coupledY 1 and Y 2 are each independently selected from C 1 -C 10 alkylene C 5 -C 10 cycloalkylene C 5 -C 12 arylene Or C 5 -C 12 arylene - (C 1 -C 10 alkylene), andQ and Q are independently a direct bond to each other Or -C (O) - -C (O) O- -OCO- -N (R 6 ) - -C (O) N (R 6 ) - - (R 6 ) NC (O) - -O- -S- -S (O) - Or -S (O) 2 -, and AndR 6 and R 7 are independently selected from hydrogen C 1 -C 14 alkyl C 2 -C 14 alkenyl C 6 -C 12 aryl C 6 -C 12 aryl -C 1 -C 10 alkyl Or C 1 a -C 10 alkyl (C 5 -C 12 group).In addition, the present invention relates to novel styryl sulfide compounds, composit
