Hong Sung You, Popovitz-Biro Ronit, Prior Yehiam, Tenne Reshef
Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 76100, Israel.
J Am Chem Soc. 2003 Aug 27;125(34):10470-4. doi: 10.1021/ja036057d.
Tin disulfide pellets were laser ablated in an inert gas atmosphere, and closed cage fullerene-like (IF) nanoparticles were produced. The nanoparticles had various polyhedra and short tubular structures. Some of these forms contained a periodic pattern of fringes resulting in a superstructure. These patterns could be assigned to a superlattice created by periodic stacking of layered SnS(2) and SnS. Such superlattices are reminiscent of misfit layer compounds, which are known to form tubular morphologies. This mechanism adds up to the established mechanism for IF formation, namely, the annihilation of reactive dangling bonds at the periphery of the nanoparticles. Additionally, it suggests that one of the driving forces to form tubules in misfit compounds is the annihilation of dangling bonds at the rim of the layered structure.
在惰性气体气氛中对二硫化锡颗粒进行激光烧蚀，从而制备出类似封闭笼状富勒烯的（IF）纳米颗粒。这些纳米颗粒具有各种多面体和短管状结构。其中一些形态包含条纹的周期性图案，从而形成一种超结构。这些图案可归因于由层状SnS₂和SnS的周期性堆叠形成的超晶格。这种超晶格让人联想到错配层化合物，已知其会形成管状形态。该机制补充了已确立的IF形成机制，即在纳米颗粒外围消除反应性悬空键。此外，这表明在错配化合物中形成小管的驱动力之一是层状结构边缘悬空键的消除。
