Self-assembled stripe patterns of CdS nanorods

被引:109
作者
Ghezelbash, Ali [1 ]
Koo, Bonil [1 ]
Korgel, Brian A. [1 ]
机构
[1] Univ Texas, Texas Mat Inst, Ctr Nano & Mol Sci & Technol, Dept Chem Engn, Austin, TX 78712 USA
关键词
D O I
10.1021/nl061035l
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Sterically stabilized CdS nanorods, 3-5 nm in diameter with aspect ratios ranging from 4 to 15, were observed to self-align into networks of stripes several micrometers long when drop-cast from dispersions at submonolayer coverage. The stripes are two to three nanorods thick with nanorods assembled side-by-side with their long axes parallel to the stripe direction. Energetic forces between nanorods, such as van der Waals and dipole-dipole attractions, favor parallel nanorod alignment; however, we propose that pattern formation is kinetically limited, or mediated, by solvent evaporation.
引用
收藏
页码:1832 / 1836
页数:5
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