苏州科技大学学报（自然科学版）2018，Vol.35Issue(1)：44-49,6.DOI:10.12084/j.issn.2096-3289.2018.01.009
层层自组装制备Fe3O4@SiO2@CdSe/CdS磁性荧光双功能材料
Preparation of bifuntional magnetic fluorescent composite Fe3O4@SiO2@CdSe/CdS by layer-by-layer self-assembly technique
摘要
Abstract
Fe3O4magnetic nanoparticles were prepared by chemical coprecipitation method.The Fe3O4were mod-ified by stober hydrolysis method to prepare core-shell silica magnetic microspheres. Then the microspheres were modified with polydiallyldimethyl(PDDA)by layer-by-layer self-assembly technique. The CdSe/CdS quantum dots were modified with thioglycolic acid,and connected to magnetic microspheres. Finally,Fe3O4@SiO2@CdSe/CdS magnetic fluorescent bifunctional composite microspheres were prepared successfully. The composite micro-spheres were characterized and tested by Fourier transform infrared spectroscopy(FTIR),X-ray diffraction (XRD),Vibrating sample magnetometer(VSM),Transmission electron microscopy(TEM),fluorescence spec-trophotometer and fluorescence microscope. The results show that the prepared composites have high magnetic intensity,good dispersity and excellent fluorescence property. It is expected to be widely used in the fields of life sciences,such as cell separation,targeting therapy,fluorescence labeling and so on.关键词
Fe3O4磁性纳米颗粒/二氧化硅/层层自组装/量子点/双功能复合材料Key words
Fe3O4magnetic nanoparticles/silica/layer-by-layer self-assembly/quantum dots/bifunctional com-posites分类
化学化工引用本文复制引用
王胜男,王秀玲,董淑玲,刘勇健,翁婷..层层自组装制备Fe3O4@SiO2@CdSe/CdS磁性荧光双功能材料[J].苏州科技大学学报（自然科学版）,2018,35(1):44-49,6.基金项目
国家自然科学基金资助项目(51103120) （51103120）
