Patent ID: 7794509

Claim:
Compounds of formula D is an aromatic or a cationic heteroaromatic group, which is optionally substituted by one or more than one C 1 -C 14 alkyl, C 1 -C 14 alkoxy, hydroxy-C 1 -C 14 alkyl, C 3 -C 8 cycloalkyl, —CN, NO 2 , —NR 3 R 4 , halogen, C 6 -C 10 aryl, which is optionally substituted or C 1 -C 14 alkyl, or by one or more groups Z; E 1 and E 2 independently from each other are ═CH; or ═N—; K is an aromatic or heteroaromatic group which is optionally substituted by one or more than one C 1 -C 14 alkyl, C 1 -C 14 alkoxy, C 3 -C 8 cycloalkyl, C 6 -C 10 aryl, halogen, hydroxy, NO 2 , —NR 3 R 4 , —N(R 3 )(CO)R 4 , —SO 2 NR 3 R 4 , —SONR 3 R 4 or by one or more Z; or a radical of formula —NR 1 R 2 ; R 1 and R 2 independently from each other are hydrogen; C 1 -C 14 alkyl; cyclo-C 1 -C 14 alkyl; C 6 -C 10 aryl; an aromatic or heteroaromatic group which is optionally substituted by one or more than one C 1 -C 14 alkyl, C 1 -C 14 alkoxy, C 3 -C 8 cycloalkyl, C 6 -C 10 aryl, halogen, hydroxy, —NR 5 R 6 , —N(R 5 )—(CO)R 5 or by Z; Z is a group of the formula (1a) *—X 1 —Y 1 —W 1 , wherein X 1 is the direct bond; —NR 7 —; —O—; —NR 7 (C═O)—; —(CO)NR 7 —; —O(C═O)—; —(CO)O—; or —(C═O)—; Y 1 is the direct bond; C 1 -C 12 alkylene, which is optionally interrupted by —O—, —NR 8 , —S—, —(C═O)—, —O(C═O)—, (C═O)O—, —NR 7 (C═O)—, —(C═O)NR 7 —, and which may substituted by C 1 -C 14 alkyl, hydroxy-C 1 -C 14 alkyl, hydroxy, —NR 9 R 10 or halogen; or C 6 -C 10 arylene, which may substituted by C 1 -C 14 alkyl, hydroxy-C 1 -C 14 alkyl, hydroxy, amino or halogen; W 1 is a cationic group; and R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 independently from each other are hydrogen; C 1 -C 14 alkyl; or Z; and An 1 − , An 2 − and An 3 − independently from each other are an anion with the proviso that 2 radicals represent Z in order to obtain an overall charge of 3 + .