Modification of gold nanoparticle composite nanostructures using thermosensitive core-shell particles as a template.
Modification of gold nanoparticle composite nanostructures using thermosensitive core-shell particles as a template.
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DOI：
10.1021/la0504356
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发表时间：
2005-07
期刊：
影响因子：
--
通讯作者：
D. Suzuki;H. Kawaguchi
中科院分区：
文献类型：
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作者：
D. Suzuki;H. Kawaguchi
我们报道了以温敏核壳粒子为模板，通过原位合成金纳米粒子，制备了新型温敏杂化核壳粒子。在水介质中合成了以聚甲基丙烯酸缩水甘油酯（GMA）为核、聚N-异丙基丙烯酰胺（PNIPAM）为壳的模板核壳粒子，并在粒子中引入了巯基等功能基团。我们发现，这些颗粒含有硫醇基团是有效的原位合成的金纳米粒子在长期储存。所获得的杂化颗粒表现出从红色到紫色的可逆颜色变化，这源于金纳米颗粒的表面等离子体共振，并且在25-40 ℃范围内具有温度依赖性。除了它们的热敏特性之外，杂化粒子还表现出在固体基底上均匀分布的独特特性。通过这种方法获得的颗粒具有潜在的热敏性应用，例如在传感器和光子或电子器件中。
We report the formation of novel thermosensitive hybrid core-shell particles via in situ synthesis of gold nanoparticles using thermosensitive core-shell particles as a template. The template core-shell particles, with cores composed mainly of poly(glycidyl methacrylate) (GMA) and shells composed mainly of poly(N-isopropylacrylamide) (PNIPAM), were synthesized in aqueous medium, and functional groups such as thiol groups were incorporated into each particle. We found that these particles containing thiol groups were effective for the in situ synthesis of gold nanoparticles in long-term storage. The obtained hybrid particles exhibited a reversible color change from red to purple, which originated from the surface plasmon resonance of gold nanoparticles and which was temperature-dependent in the range of 25-40 degrees C. In addition to their thermosensitive property, the hybrid particles exhibited the unique characteristic of uniform distribution on a solid substrate. The particles obtained by this approach have potential thermosensitive applications such as in sensors and photonic or electronic devices.