In situ quantum dot growth on multiwalled carbon nanotubes

被引:153
作者
Banerjee, S
Wong, SS [1 ]
机构
[1] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA
[2] Brookhaven Natl Lab, Dept Chem & Mat Sci, Upton, NY 11973 USA
关键词
D O I
10.1021/ja035980c
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The generation of nanoscale interconnects and supramolecular, hierarchical assemblies enables the development of a number of novel nanoscale applications. A rational approach toward engineering a robust system is through chemical recognition. Here, we show the in situ mineralization of crystalline CdTe quantum dots on the surfaces of oxidized multiwalled carbon nanotubes (MWNTs). We coordinate metallic precursors of quantum dots directly onto nanotubes and then proceed with in situ growth. The resulting network of molecular-scale "fused" nanotube-nanocrystal heterojunctions demonstrates a controlled synthetic route to the synthesis of complex nanoscale heterostructures. Extensive characterization of these heterostructures has been performed using scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, UV-visible spectroscopy, and X-ray diffraction (XRD).
引用
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页码:10342 / 10350
页数:9
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