Tailored Au nanorods: optimizing functionality, controlling the aspect ratio and increasing biocompatibility
Tailored Au nanorods: optimizing functionality, controlling the aspect ratio and increasing biocompatibility
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DOI：
10.1088/0957-4484/21/33/335604
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发表时间：
2010-08-20
期刊：
影响因子：
3.5
通讯作者：
Margaritondo, G.
中科院分区：
文献类型：
--
作者：
Cai, Xiaoqing;Wang, Cheng-Liang;Margaritondo, G.
用x射线辐照法合成了高长径比的单分散金纳米棒。辐射首先被用来刺激种子的产生。之后，纳米棒的生长被刺激化学还原或再次通过x射线照射。在最后一种情况下，整个过程在没有还原剂的情况下进行。最终产物的形状可以通过在晶种合成期间调节X射线照射的强度来控制。反过来，纳米棒纵横比决定了纳米棒的吸收波长，因此可以针对不同的应用进行优化。同样，纵横比影响HeLa细胞对纳米棒的摄取。
Monodisperse gold nanorods with high aspect ratio were synthesized by x-ray irradiation. Irradiation was first used to stimulate the creation of seeds. Afterward, nanorod growth was stimulated either by chemical reduction or again by x-ray irradiation. In the last case, the entire process took place without reducing agents. The shape of the final products could be controlled by modulating the intensity of the x-ray irradiation during the seed synthesis. In turn, the nanorod aspect ratio determines the absorption wavelength of the nanorods that can thus be optimized for different applications. Likewise, the aspect ratio influences the uptake of the nanorods by HeLa cells.