Publication date: 15th May 2025
Computational methods for predicting ideal structures for energy conversion and storage are becoming quite powerful, but the development of synthetic methods to access those structures is still a significant challenge. We have been exploring the solution phase synthesis and characterization of families of ternary copper selenophosphate nanoparticles. We are particularly interested in developing a more detailed understanding of the transformations that occur in solution between organic and inorganic species critical for controlling the composition, structure, and morphology of these particles. We will focus on colloidal Cu3PSe4 nanoparticles in particular, a phase we have previously prepared from Cu3-xP and solid Se. Quantitatively following the conversion of solid Se into the Cu3PSe4 product is problematic, in turn meaning that the balanced stoichiometry and mechanistic insights remain elusive. Herein, we show that dibenzyl diselenide (Bn2Se2) can be employed in the synthesis of Cu3PSe4 NPs. These results lay the groundwork for the expanded use of Bn2Se2 as a Se02 delivery reagent for the syntheses of Se-containing materials, and more broadly, for the use of molecular precursors chosen based on well-known chemistry that can yield trackable, quantifiable reaction products.
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