Patent ID: 8309514

Claim:
A compound having the formula: wherein: each L is a bond; each T is a terminal group separately selected from the group consisting of hydrogen, an amine group, and a reporting moiety; each R is independently selected from the group consisting of optionally substituted pyrimidine, optionally substituted purine, and wherein said pyrimidine and purine are optionally linked to the compound via a linker comprising an optionally substituted C 1 -C 8 alkyl; each G is separately selected to be a guanidinium group having the formula: each R 1 , R 2 , R 3 , and R 4 are independently hydrogen or C 1 -C 12 alkyl; each n, and p are independently integers in the range from 1 to 6; m, and q are 0; and r is an integer selected from 4 to 10.