Evolution of gold nanoparticles through Catalan, Archimedean, and Platonic solids

被引:48
作者
Kim, Do Youb [2 ]
Im, Sang Hyuk [1 ]
Park, O. Ok [2 ]
Lim, Yong Taik [3 ]
机构
[1] Korea Res Inst Chem Technol, KRICT RPFL Global Res Lab, Adv Mat Div, Taejon 305600, South Korea
[2] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn BK21, Taejon 305701, South Korea
[3] KRIBB, Taejon 305806, South Korea
来源
CRYSTENGCOMM | 2010年 / 12卷 / 01期
关键词
SURFACE-PLASMON RESONANCE; HIGH-YIELD SYNTHESIS; RAMAN-SCATTERING; SIZE CONTROL; NANOCRYSTALS; NANOSTRUCTURES; SHAPES; OCTAHEDRA; NANORODS;
D O I
10.1039/b914353j
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
This paper reports the transformation of rhombic dodecahedral gold nanoparticles through two different pathways depending on the water content. The gold nanoparticles were prepared by reducing HAuCl4 with N, N-dimethylforamide in the presence of poly(vinyl pyrrolidone) and water. Not only the concentration of PVP but also the water content has a critical role in determining the shape transformation of the gold nanocrystals. At low water content the rhombic dodecahedron is transformed into a rhombicuboctahedron to a truncated octahedron and then to an octahedron, while at higher water content the rhombic dodecahedron is transformed into a rhombicuboctahedron and then to a cube or a truncated cube and then to a cuboctahedron and to a truncated octahedron. In addition, we demonstrated cell imaging by using the truncated octahedral, rhombic dodecahedral and octahedral gold nanoparticles as a contrast agent.
引用
收藏
页码:116 / 121
页数:6
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