摘要
用化学共沉淀法制备了四氧化三铁(Fe3O4)纳米粒子,Stober法在其表面包裹SiO2并复合荧光标记物FITC,EDC偶联牛血清白蛋白(BSA)。采用扫描电子显微镜(SEM),傅里叶变换红外光谱仪(FT-IR),荧光分析仪,电子能谱(XPS)等对复合粒子进行了表征。结果表明,复合粒子保留了FITC的荧光特性、Fe3O4的磁响应性并成功接枝蛋白分子。生物功能化磁性荧光复合纳米粒子有望广泛应用于细胞标记、荧光追踪、磁性分离等领域。
A kind of polymer coating with micron-scale structures was prepared using air spray painting tech-nique. A surface mapping microscope was utilized to study the surface of the polymer coating. The formation mechanism of the structured surface was given according to the X-ray spectroscopy analysis. Test results in a water tunnel show remarkable drag reduction rate on the polymer coating. The drag reduction mechanism was discussed.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2012年第8期1045-1048,1055,共5页
Journal of Functional Materials
基金
国家自然科学基金资助项目(20975072)
高等学校博士学科点专项科研基金资助项目(20070610126)
