Synthesis and characterization of ZnS nanosized semiconductor particles within mesoporous solids

Article Abstract:

ZnS semiconductor quantum dots are synthesized by using a method involving melt exchange reaction inside the pores of MCM-41 and subsequent reaction with [H.sub.2]S. The quantum dot optical properties are studied with ultraviolet (UV)-vis, photoluminescence and photoluminescence excitation spectroscopies, which have provided evidence for the low-dimensional character of the ZnS semiconductor particles.

Porous materials, Zinc compounds, Chemical properties

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Use of fluorous chemistry in the solubilization and phase transfer of nanocrystals, nanorods, and nanotubes

Article Abstract:

A study demonstrates that the phase transfer of gold and CdSe nanoparticles from an aqueous or hydrocarbon medium to the fluorous phase is affected using a fluorous label and a fluorous solvent. Phase transfer of the nanostructures to a fluorous solvent symbolizes solubilization in a highly nonpolar solvent, accompanied by purification.

Gold Compounds, Cadmium Compounds, Analysis, Electric properties, Solubility, Structure, Purification

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