Patent ID: 8658148

Claim:
A dendrimer, the dendrimer comprising a plurality of branched repeating units radiating out from a central atom, multifunctional moiety, or cluster of atoms, wherein each repeating unit comprises a terminal moiety, and wherein at least about 5% of the terminal moieties include a urea of formula (I) wherein each R 1 and R 2 is independently C 1 -C 6 alkyl, C 1 -C 6 alkenyl, cyclyl, aryl, heterocyclyl, heteroaryl, cyclylalkyl, arylalkyl, or heterocyclylalkyl, heteroarylalkyl; any of which are optionally substituted by C 1 -C 6 alkyl, amino, C 1 -C 6 alkylamino, C 1 -C 6 dialkylamino, hydroxy, C 1 -C 6 alkoxy, and wherein either of R 1 or R 2 independently optionally have a net charge; and indicates the point of attachment of the terminal moiety of formula (I) to the dendrimer.