Banerjee Sarbajit, Wong Stanislaus S
Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794-3400, USA.
J Am Chem Soc. 2003 Aug 27;125(34):10342-50. doi: 10.1021/ja035980c.
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).
纳米级互连以及超分子、分层组装体的生成推动了许多新型纳米级应用的发展。构建稳健系统的合理方法是通过化学识别。在此，我们展示了在氧化多壁碳纳米管（MWNTs）表面原位矿化结晶CdTe量子点的过程。我们将量子点的金属前驱体直接配位到纳米管上，然后进行原位生长。由此形成的分子尺度“融合”的纳米管 - 纳米晶体异质结网络展示了一种可控的合成路线，用于合成复杂的纳米级异质结构。已使用扫描电子显微镜（SEM）、透射电子显微镜（TEM）、高分辨率透射电子显微镜（HRTEM）、能量色散X射线光谱（EDS）、X射线光电子能谱（XPS）、拉曼光谱、紫外 - 可见光谱和X射线衍射（XRD）对这些异质结构进行了广泛表征。
