New approaches to the synthesis of anisotropic, core–shell and hollow metal nanostructures
New approaches to the synthesis of anisotropic, core–shell and hollow metal nanostructures
复制标题
DOI：
10.1039/b502704g
复制
发表时间：
2005-07
影响因子：
--
通讯作者：
M. Sastry;A. Swami;S. Mandal;P. Selvakannan
中科院分区：
文献类型：
--
作者：
M. Sastry;A. Swami;S. Mandal;P. Selvakannan
控制尺寸、形状和化学成分的纳米材料的合成仍然是纳米科学中的一个主要挑战。纳米材料合成的要求正变得越来越复杂，除了各向异性结构外，围绕着合成核壳和中空纳米结构的配方的开发也令人兴奋。在这个方向上研究的大部分动机来自于这种纳米结构所表现出的不同寻常的光电和化学特性。在本文中，我们回顾了本实验室通过将还原剂或前驱体金属离子限制在空气-水界面上，在空气-水界面合成扁平的金纳米结构的工作。我们还介绍了通过在核纳米粒子表面固定依赖于UV和pH的还原剂来合成相纯的核壳纳米粒子，以及通过金属转移反应合成有机可溶的中空壳纳米结构。
The synthesis of nanomaterials with control over size, shape and chemical composition continues to be a major challenge in nanoscience. The requirements of nanomaterial synthesis are becoming more sophisticated and, in addition to anisotropic structures, there is much excitement surrounding the development of recipes for the synthesis of core–shell and hollow nanostructures. Much of the motivation for research in this direction stems from the unusual optoelectronic and chemical properties exhibited by such nanostructures. In this article, we review the work from this laboratory on the synthesis of flat gold nanostructures at the air–water interface, either by confining the reductant or the precursor metal ions to the air–water interface. We also describe the synthesis of phase-pure core–shell nanoparticles by immobilizing UV- and pH-dependent reducing agents on the surface of the core nanoparticles as well as the synthesis of organically soluble hollow-shell nanostructures via transmetallation reactions.