摘要
In this paper, we report a novel method to synthesize polyethylenimine (PEI) nanogels in the range of 80— 200nm with narrow size distribution by photo-chemistry at room temperature in aqueous solution. The nanogels’ size, size distributions and zeta potential were determined by photo correlation spectroscopy (PCS). Spherical morphology of the nanogels was characterized by scanning electron microscopy (SEM) and confirmed by atomic force microscopy (AFM). The nanogels are of high stability, low toxicity and low immunogenicity, as having been confirmed in in vivo tests with mice as animal model, and in vitro tests with human lung and liver cancer cells as well. Efforts are being made for further studies on synthesis and applications of the nanogels.
In this paper, we report a novel method to synthesize polyethylenimine (PEI) nanogels in the range of 80— 200nm with narrow size distribution by photo-chemistry at room temperature in aqueous solution. The nanogels’ size, size distributions and zeta potential were determined by photo correlation spectroscopy (PCS). Spherical morphology of the nanogels was characterized by scanning electron microscopy (SEM) and confirmed by atomic force microscopy (AFM). The nanogels are of high stability, low toxicity and low immunogenicity, as having been confirmed in in vivo tests with mice as animal model, and in vitro tests with human lung and liver cancer cells as well. Efforts are being made for further studies on synthesis and applications of the nanogels.
出处
《辐射研究与辐射工艺学报》
CAS
CSCD
北大核心
2005年第2期81-81,共1页
Journal of Radiation Research and Radiation Processing
基金
上海市纳米专项(0243nm027)
中国科学院上海应用物理研究所前沿领域项目(55120212)资助
关键词
聚乙烯亚胺
光化学
基因转染
Polyethylenimine, Photochemistry, Gene delivery