Highly branched poly-(N-isopropylacrylamide)s with arginine-glycine-aspartic acid (RGD)- or COOH-chain ends that form sub-micron stimulus-responsive particles above the critical solution temperature

Highly branched poly(N- isopropyl acrylamide)s with peptide-end groups form colloidally stable dispersions of sub-micron particles above the lower critical solution temperature.