Patent ID: 7960181

Claim:
A chromoionophore of the general Formula (I) wherein a is 0 or 1, b and c independently are selected from the group consisting of 0 and 1, with the proviso that b and c are not simultaneously 0, d is selected from the group consisting of 1, 2 and 3, e and f independently are selected from the group consisting of 0 and 1, with the proviso that e and f are not simultaneously 0, each of R 1 and R 2 is hydrogen or R 1 and R 2 , together with C 1 and C 2 , combine to form a (C 1 -C 4 ) alkyl benzene ring or a (C 1 -C 4 ) alkoxy benzene ring; each of R 3 and R 4 is hydrogen or R 3 and R 4 , together with C 3 and C 4 , form a (C 1 -C 4 ) alkyl benzene ring or a (C 1 -C 4 ) alkoxy benzene ring; each of R 5 and R 6 is hydrogen or R 5 and R 6 , together with C 5 and C 6 , form a benzene ring or a naphthalene ring; each of R 7 and R 8 is hydrogen or R 7 and R 8 , together with C 7 and C 8 , form a (C 1 -C 4 ) alkyl benzene ring or a (C 1 -C 4 ) alkoxy benzene ring; each of R 9 and R 10 , is hydrogen or R 9 and R 10 , together with C 9 and C 10 , form a (C 1 -C 4 ) alkyl benzene ring or a (C 1 -C 4 ) alkoxy benzene ring; and L is a chromophoric moiety selected from the group consisting of —NO 2 , Formula (II) and (III), wherein Ar is a (C 6 -C 10 ) aromatic moiety or a (C 5 -C 14 ) heteroaromatic moiety containing one or more heteroatoms selected from N, O, and S, and wherein Ar is substituted with one or more substituents selected from the group consisting of hydrogen, —NO 2 , —NO, —CN, (C 1 -C 8 ) straight chain or branched alkyl, (C 2 -C 8 ) alkenyl, halogen, —SO 3 H, —W—COOH, —W—N(R 11 ) 3 , —C(O)OR 11 , —C(O)R 11 ; W is (C 1 -C 8 ) alkylene; and R 11 is selected from the group consisting of hydrogen and (C 1 -C 8 ) straight chain or branched alkyl.