摘要
采用柠檬酸钠化学还原法制备了尺寸约40nm的Au颗粒,并将纳米Au颗粒组装到磁温敏聚合物Fe3O4@P(NIPAM-AAM)表面,获得了兼具温度响应性、磁响应性和SERS活性的多功能复合材料Fe3O4@P(NIPAM-AAM),Au。用透射电镜(TEM)、红外光谱仪(FT-IR)、振动样品磁强计(VSM)、紫外-可见光谱仪(UV-Vis)等对多功能复合材料进行表征。以罗丹明为探针分子,研究了复合材料的SERS活性。研究表明,多功能复合材料具有良好的超顺磁性和SERS活性,其低临界溶解温度(LCST)在41℃左右。交变磁场作用下,复合材料可在750s内使自身温度升至45℃。
Gold nanoparticles with size about 40nm were prepared through chemical reduction by sodium citrate, which were successfully conjugated to the surface of Fe3O4 @P（NIPAM-AAM）. And thus Fe3O4@P（NIPAM-AAM）, Au multifunctional composite which with thermosensitivity, magnetism and surface-enhanced Raman scattering （SERS） effect was obtained. The composite was characterized by TEM, FT-IR, VSM and UV-Vis spectroscopy. The Raman enhancement effect was evaluated by using rhodamine as a probe molecule. It was found that the composite exhibited excellent superparamagnetic and SERS properties. Its lower critical solution temperature （LCST） was about 41℃. The temperature of the composite could rise up to 45℃ when exposed in AC magnetic field for 750 s.
出处
《化工新型材料》
CAS
CSCD
北大核心
2014年第9期51-54,共4页
New Chemical Materials
基金
国家自然科学基金(61371057)
科技部国家重大科学仪器设备开发专项(2011YQ03013403)
江苏省高校自然科学研究面上项目(13KJB140014)
江苏省光子制造科学与技术重点实验室2013年度开放基金(GZ201309)
南通大学研究生创新计划项目(YKC13020)
