Amphiphilic block copolymers and nano particles comprising the same

摘要

An amphiphilic block copolymer. The amphiphilic block copolymer includes one or more hydrophilic polymers, one or more hydrophobic polymer, and one or more zwitterions. The invention also provides a nano particle and carrier comprising the amhpiphilic block copolymer for delivery of water-insoluble drugs, growth factors, genes, or cosmetic substances.