Shape-Controlled Synthesis and Assembly of Copper Sulfide Nanoparticles

Abstract

Cu 2 S nanocrystals and superlattices were synthesized by a simple solution-phase thermolysis of the copper dodecanethiolate polymer precursor. X-ray diffraction (XRD), selected area electron diffraction (SAED), and high resolution transmission electron microscopy (HRTEM) confirmed the chalcocite crystal structure of the nanocrystals. Monodispersed Cu 2 S nanodisks, spheres and hexagon nanoplates could be fabricated with this method. Further, copper sulfide nanoarrays assembled by nanoparticles of different shapes were obtained by adjusting the experimental conditions. The growth of the nanocrystals and their self-assembly structures were studied and believed to be associated with the lamellar structure of the copper thiolate precursor.

Anisotropic nanomaterials: structure, growth, assembly, and functions

“…Cu 2 S nanodisks, spheres, and hexagonal nanoplates were assembled into superstructures through this method. They believed that the assembled structures are closely related to the lamellar structure of the copper thiolate precursor ( 319 ).…”

Cu2O Nanocrystal‐Templated Growth of Cu2S Nanocages with Encapsulated Au Nanoparticles and In‐Situ Transmission X‐ray Microscopy Study

“…In particular, Cu 2 S, a p ‐type semiconductor with a bandgap of 1.2–2.0 eV, is of great interest due to its potential applications in solar cells,2–4 biosensors,4 and the photodegradation of organic pollutants 5. In the past few years, various Cu 2 S nanostructures including nanospheres,6 nanodisks,7–10 nanorods,11 nanowires,12 and nanoribbons13 have been prepared. Very few reports have demonstrated the formation of hollow Cu 2 S nanostructures, yet their surfaces are generally rough 14, 15.…”

Self-Assembly of CdSe Nanoplatelets into Giant Micrometer-Scale Needles Emitting Polarized Light

“…18 Long anisotropic superstructures have been observed in solutions of the same nanoparticles by a different group. 19 In a previous study, we have shown that the stacking of CdSe nanoplatelets in solution can have important consequences on their emission properties. Indeed, the interaction between the nanoplatelets within a stack induces the appearance of a phonon-replica line in their emission spectrum at low temperature.…”