| 主权项 |
1. A compound of general formula IIIwhere
each of R1, R2, R5, and R6 is the same or different and is independently selected from the group consisting of an aliphatic, heteroaliphatic, sulfoalkyl group, or heteroaliphatic with terminal SO3; each of R7 and R8 is the same or different and is independently selected from either H, SO3, sulfoalkyl, heteroaliphatic, or heteroaliphatic with terminal SO3; each of R9 and R10 is the same or different and is independently selected from either aryl groups, substituted aryl groups, or cycloalkyl groups; R11 is an electrophilic group selected from the group consisting of a carboxylic acid, an alkyl ester, an aryl ester, a substituted aryl ester, an aldehyde, and amide, an aryl amide, an alkyl halide, a thioester, a sulfonyl ester, and alkyl ketone, an aryl ketone, a substituted aryl ketone, a halosulfonyl, a nitrile, and a nitro; L is a linking group selected from the group consisting of a divalent linear (—(CH2)o—, o=1 to 15), crossed, cyclic, and combinations thereof alkylene group which can be substituted by at least one atom selected from the group consisting of oxygen, substituted nitrogen, and sulfur; Kat is a number of Na+, K+, Ca2+, ammonia, or other cation(s) needed to compensate the negative charge brought by the cyanine; m is an integer from 0 to 5 inclusive; o is an integer from 0 to 12 inclusive; and n is an integer from 1 to 3 inclusive. |
