点击放大双臂-聚乙二醇-丙烯酸酯（n=4）2-Arm-PEG-Acrylate (n=4, per arm); 2-Arm acrylate-functionalized discrete poly(ethylene glycol) (PEG arm n=4)
点击放大双臂-聚乙二醇-甲基丙烯酸酯（n=4）2-Arm-PEG-Methacrylate (n=4, per arm); 2-Arm methacrylate-functionalized discrete poly(ethylene glycol) (PEG arm n=4)
点击放大三臂-聚乙二醇-丙烯酸酯（n=4）3-Arm-PEG-Acrylate (n=4, per arm); 3-Arm acrylate-functionalized discrete poly(ethylene glycol) (PEG arm n=4)
