纳米反应器
两亲性
材料科学
聚合物
高分子化学
化学工程
丙烯酸酯
丙烯酸甲酯
纳米技术
纳米颗粒
共聚物
复合材料
工程类
作者
Yunfeng Shi,Zhifu Wu,Xing Weng,Xiaoyun Yang,Jianhua Zhou,Shuxia Wang,Ming Ma,Junhong Zhao,Lei‐Lei Liu,Jimin Du
摘要
A new strategy for the preparation of Fe 3 O 4 nanocrystals (NCs) and FePt bimetal NCs with amphiphilic hyperbranched polymers as unimolecular nanoreactors has been described. The amphiphilic hyperbranched polymers were synthesized by grafting methyl acrylate to hyperbranched poly(ethylenimine)s (HPEI) with the help of Michael addition reaction. The hydrophilic HPEI core was used to stabilize the magnetic NCs, whereas the hydrophobic methyl ester terminals can prevent the aggregation of polymers and NCs, thus magnetic NCs with a narrow size distribution were prepared. The resulting Fe 3 O 4 NC/amphiphilic hyperbranched polymer nanocomposites also showed slightly better magnetofection property than HPEI transfection and their luciferase expression level in maximum was 1.3‐fold greater than that for HPEI transfection. POLYM. COMPOS., 37:429–434, 2016. © 2014 Society of Plastics Engineers
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