Stimuli-sensitive core/shell template particles for immobilizing inorganic nanoparticles in the core
Stimuli-sensitive core/shell template particles for immobilizing inorganic nanoparticles in the core
复制标题
DOI：
10.1007/s00396-006-1523-6
复制
发表时间：
2006-06
影响因子：
2.4
通讯作者：
D. Suzuki;H. Kawaguchi
中科院分区：
文献类型：
--
作者：
D. Suzuki;H. Kawaguchi
我们合成并表征了具有官能团(或材料)定位于核的刺激敏感核/壳粒子。我们以前报道过以N-异丙基丙烯酰胺和甲基丙烯酸缩水甘油酯(GMA)为单体，通过无皂乳液共聚合成的两种模板粒子，但制备方法不同，制备了两种杂化粒子。GMA在固定化含硫醇基等多种官能团的材料方面具有优势。在本研究中，我们考察了两种单体的投料比对固定化无机纳米颗粒的影响，以获得合适的模板颗粒。用硫醇化合物对模板粒子进行修饰，引入离子基团。用动态光散射和扫描电子显微镜对其进行了表征。在模板中原位合成磁性纳米粒子后，直接用透射电子显微镜对杂化粒子进行了表征。因此，我们可以得到在核中含有大量磁性纳米颗粒(∼33wt%)的核/壳混合粒子。
We synthesize and characterize stimuli-sensitive core/shell particles with functional group (or material) localized in the core. We previously reported two types of hybrid particles prepared by using the template particles which were synthesized by soap-free emulsion copolymerization withN-isopropylacrylamide and glycidyl methacrylate (GMA) as monomers but by different preparation methods. GMA has advantages in immobilizing materials having several functional groups such as thiol ones. In this study, to obtain the suitable template particles for immobilizing any inorganic nanoparticles in the core, we investigated the effect of feed ratio of the two monomers. Obtained template particles were modified by thiol compounds to introduce ionic groups. They were characterized by dynamic light scattering and scanning electron microscopy. After in situ synthesis of magnetic nanoparticles in the templates, the hybrid particles were characterized directly by transmission electron microscopy. Consequently, we could obtain the hybrid core/shell particles which contained a large amount of magnetic nanoparticles (∼33 wt%) in the core.