Hybrid microgels with reversibly changeable multiple brilliant color.
Hybrid microgels with reversibly changeable multiple brilliant color.
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DOI：
10.1021/la052999f
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发表时间：
2006-03
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
我们报告了可逆的变色杂化微凝胶，由于SPR的颗粒间相互作用，使用了几个结构化的纳米颗粒来调节多种鲜艳的颜色。利用微凝胶的热敏溶胀/脱胀特性，实现了颗粒间的相互作用。我们以N-异丙基丙烯酰胺(NIPAM)和甲基丙烯酸缩水甘油酯(GMA)共聚微凝胶(NG微凝胶)为模板，原位合成Au纳米粒子。通过在微凝胶中连续还原Au和Ag，可以稳定地生长种子Au纳米颗粒。有趣的是，通过将Au/Ag多核/壳双金属纳米颗粒附着在微凝胶中，杂化微凝胶能够呈现出多种鲜艳的颜色，并且通过调整纳米颗粒的尺寸来实现每个杂化微凝胶的颜色可逆性。这项研究中显示的微凝胶将在生物医学和电子设备中找到重要的应用。
We report reversibly color changeable hybrid microgels that tune multiple brilliant colors due to interparticle interactions of SPR using several structured nanoparticles. The interparticle interactions were brought out using the thermosensitive swelling/deswelling property of microgel. We employ N-isopropylacrylamide (NIPAM) and glycidyl methacrylate (GMA) copolymerized microgels (NG microgels) as templates for in situ synthesis of Au nanoparticles. The seed Au nanoparticles could be stably grown by successive reduction of Au and Ag in the microgels. Interestingly, the hybrid microgels were able to exhibit multiple brilliant colors by attaching Au/Ag multiple core/shell bimetallic nanoparticles in the microgels, and the color change reversibility of each hybrid microgel was accomplished by adjusting the nanoparticles' sizes. Obtained microgels shown in this study will find important applications such as in biomedical and electronic devices.