Pentasupertetrahedral Clusters as Building Blocks for a Three-Dimensional Sulfide Superlattice

摘要

Chalcogenides are becoming increasingly important in the development of new solid-state materials for technological applications.Chalcogenide clusters with well-defined size and composition represent the lower limit of semiconducting nanoparticles and serve to span the size gap between quantum dot structures and molecular species in solution.Moreover,these large clusters can be used as building blocks to construct supramolecular assemblies with unique properties.Among chalcogenide clusters with various geometrical features,tetrahedral clusters are of particular significance because they can act as pseudotetrahedral building blocks for the construction of zeolite-like open architectures.Unfortunately,even though a number of superlattices built from super-tetrahedral clusters have been reported,relatively little progress has been made with other types of tetrahedral clusters.