biostudies-literatureUnknown5(1)Ivanchenko MHerein, we report the colloidal synthesis of hollow dual-plasmonic nanoparticles (NPs) using Au@Cu<sub>2</sub>O core-shell NPs as templates and exploiting the nanoscale Kirkendall effect. In our synthesis, we used organic compounds as a source of chalcogenide ions for an anion exchange reaction at elevated temperatures using polyvinylpyrrolidone (PVP) as a capping reagent to transform the solid Cu<sub>2</sub>O shell into a hollow copper chalcogenide shell. The resulting structures possess different features depending on the chalcogenide precursor employed. TEM images confirm the complete transformation of Au@Cu<sub>2</sub>O templates when 1,1-dimethyl-2-selenourea was added and the formation of hollow Au@Cu<sub>2-<i>x</i></sub> Se nanostructures. In contrast, residues of Cu<sub>2</sub>O atNanoscale advances88-95https://www.ebi.ac.uk/biostudies/studies/S-EPMC9765514biostudies-literatureFacile aqueous synthesis of hollow dual plasmonic hetero-nanostructures with tunable optical responses through nanoscale Kirkendall effects.PMC9765514Jing HBrothers ABCarroll ALIvanchenko MfalseFacile aqueous synthesis of hollow dual plasmonic hetero-nanostructures with tunable optical responses through nanoscale Kirkendall effects.Herein, we report the colloidal synthesis of hollow dual-plasmonic nanoparticles (NPs) using Au@Cu<sub>2</sub>O core-shell NPs as templates and exploiting the nanoscale Kirkendall effect. In our synthesis, we used organic compounds as a source of chalcogenide ions for an anion exchange reaction at elevated temperatures using polyvinylpyrrolidone (PVP) as a capping reagent to transform the solid Cu<sub>2</sub>O shell into a hollow copper chalcogenide shell. The resulting structures possess different features depending on the chalcogenide precursor employed. TEM images confirm the complete transformation of Au@Cu<sub>2</sub>O templates when 1,1-dimethyl-2-selenourea was added and the formation of hollow Au@Cu<sub>2-<i>x</i></sub> Se nanostructures. In contrast, residues of Cu<sub>2</sub>O at2022-01-01T00:00:00Z2022 Dec2025-04-19T09:25:35.189Z2025-04-19T09:25:35.189ZS-EPMC97655143660581210.1039/d2na00606e