Department of Physics, Energy and Semiconductor Research Laboratory, University of Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26129 Oldenburg, Germany.
ACS Nano. 2012 Jul 24;6(7):5889-96. doi: 10.1021/nn302448n. Epub 2012 Jun 26.
Many physical and chemical properties of semiconducting nanocrystals strongly depend on their spatial dimensions and crystallographic structure. For these reasons, achieving a high degree of size and shape control plays an important role with respect to their application potential. In this report we present a facile route for the direct colloidal synthesis of copper(I) sulfide nanorods. A high reactivity of the starting materials is essential to obtain nanorods. We achieve this by using a thiol that thermally decomposes easily and serves as the sulfur source. The thiol is mixed in a noncoordinating solvent, which acts as the reaction medium. Adjustment of the nucleation temperature makes it possible to tailor uniform nanorods with lengths from 10 to 100 nm. The nanorods are single crystalline, and the growth direction is shown to occur along the a-axis of djurleite. The growth process and character of the nanorods were investigated through UV-vis and NIR absorption spectroscopy, transmission electron microscopy, and powder X-ray diffraction measurements.
许多半导体纳米晶体的物理和化学性质强烈依赖于它们的空间维度和结晶结构。由于这些原因，实现高度的尺寸和形状控制对于它们的应用潜力起着重要的作用。在本报告中，我们提出了一种直接胶体合成硫化铜纳米棒的简便方法。为了获得纳米棒，起始材料具有高反应性是必不可少的。我们通过使用一种容易热分解的硫醇作为硫源来实现这一点。该硫醇混合在非配位溶剂中，作为反应介质。调节成核温度可以定制长度从 10 到 100nm 的均匀纳米棒。纳米棒是单晶的，其生长方向被证明是沿着 djurleite 的 a 轴进行的。通过紫外-可见和近红外吸收光谱、透射电子显微镜和粉末 X 射线衍射测量研究了纳米棒的生长过程和特性。
