Karg Matthias, Pastoriza-Santos Isabel, Pérez-Juste Jorge, Hellweg Thomas, Liz-Marzán Luis M
Stranski-Laboratorium für Physikalische und Theoretische Chemie, TU Berlin, Strasse des 17. Juni 124, 10623 Berlin, Germany.
Small. 2007 Jul;3(7):1222-9. doi: 10.1002/smll.200700078.
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.
纳米粒子，尤其是金纳米棒，具有源自两种截然不同的等离子体模式的有趣光学性质。这些模式的频率可因其化学环境以及与相邻棒的耦合而改变。本研究调查了由吸附在热响应性聚（N-异丙基丙烯酰胺）（PNIPAM）微凝胶上的金纳米棒制成的新型复合材料。结果表明，颗粒内部聚合物网络的热致坍塌导致金棒纵向等离子体带发生红移，且发现这种红移是完全可逆的。
