Photothermal Reshaping of Gold Nanorods Depends on the Passivating Layers of the Nanorod Surfaces
Photothermal Reshaping of Gold Nanorods Depends on the Passivating Layers of the Nanorod Surfaces
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DOI：
10.1021/la800811j
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发表时间：
2008-10-21
期刊：
影响因子：
3.9
通讯作者：
Niidome, Yasuro
中科院分区：
文献类型：
--
作者：
Horiguchi, Yukichi;Honda, Kanako;Niidome, Yasuro
利用脉冲激光辐照金纳米棒，实现了金纳米棒的光热重塑。重塑的效率强烈依赖于金纳米棒的表面条件。当金纳米棒分散在浓十六烷基三甲基溴化铵（CTAB）中时，金纳米棒有效地转化为φ形。通过比较，当使用聚（苯乙烯磺酸盐），聚（乙烯基吡咯烷酮），聚（乙二醇），或磷脂酰胆碱层，CTAB层被发现是一个更好的热绝缘体，有助于提高光热重塑的金纳米棒。
Photothermal reshaping of gold nanorods was triggered by pulsed-laser irradiation. The efficiency of the reshaping was strongly dependent on the surface conditions of the gold nanorods. When the gold nanorods were dispersed in concentrated hexadecyltrimethylammonium bromide (CTAB), the gold nanorods were efficiently transformed into a phi-shape. By comparison when poly(styrene sulfonate), poly(vinylpyrrolidone), poly(ethylene glycol), or phosphatidylcholine layers were used, the CTAB layers were found to be a better thermal insulator that helped to enhance the photothermal reshaping of the gold nanorods.