Nanorod-coated PNIPAM microgels:: Thermoresponsive optical properties
Nanorod-coated PNIPAM microgels:: Thermoresponsive optical properties
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DOI：
10.1002/smll.200700078
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发表时间：
2007-07-01
期刊：
影响因子：
13.3
通讯作者：
Liz-Marzan, Luis M.
中科院分区：
文献类型：
--
作者：
Karg, Matthias;Pastoriza-Santos, Isabel;Liz-Marzan, Luis M.
纳米颗粒，特别是金纳米棒具有有趣的光学性质，这是由两种差异很大的等离子体模式引起的。这种模式的频率可以通过它们的化学环境和与相邻棒的耦合来改变。本研究探讨了由金纳米棒吸附在温敏性聚（N-异丙基丙烯酰胺）（PNIPAM）微凝胶上制成的新型复合材料。结果表明，热诱导的崩溃的聚合物网络内的颗粒导致的红移的纵向等离子体带的金棒，这被发现是完全可逆的。
Nanoparticles and in particular gold nanorods have interesting optical properties arising from two well-differentiated plasmon modes. The frequency of such modes can be altered by their chemical environment and coupling with neighboring rods. This study investigates new composite materials made of gold nanorods adsorbed on thermoresponsive poly (N-isopropylacrylamide) (PNIPAM) microgels. It is shown that the thermally induced collapse of the polymer network inside the particles leads to a red shift of the longitudinal plasmon band of the gold rods, which is found to be fully reversible.