Ruiz, DiegoMizrahi, MartínSantos, Harrison D. A.Jaque, DanielJones, Callum M. S.Marqués-Hueso, JoséJacinto, CarlosRequejo, Félix, G.Torres Pardo, María De La AlmudenaGonzález Calbet, José MaríaJuárez, Beatriz H.2024-07-312024-07-312019-04-09Ruiz, Diego & Mizrahi, Martín & Santos, Harrisson David & Jaque, Daniel & M. S. Jones, Callum & Marques-Hueso, Jose & Jacinto, Carlos & Requejo, Felix & Torres-Pardo, Almudena & Gonzalez-Calbet, Jose & Juarez, Beatriz. (2019). Synthesis and characterization of Ag2S and Ag2S/Ag2(S,Se) NIR nanocrystals. Nanoscale. 11. 10.1039/C9NR02087J.2040-33642040-337210.1039/c9nr02087jhttps://hdl.handle.net/20.500.14352/107267Syntheses of metal sulfide nanocrystals (NCs) by heat-up routes in the presence of thiols yield NC arrangements difficult to further functionalize and transfer to aqueous media. By means of different NMR techniques, and exemplified by Ag2S NCs, a metal–organic polymer formed during the synthesis acting as a ligand has been identified to be responsible for such aggregation. In this work, a new synthetic hot-injection strategy is presented to synthesize Ag2S NCs which are easily ligand exchangeable in water. Furthermore, the hot-injection route allows an extra NC treatment with Se to produce Ag2S/Ag2(S,Se) NCs with improved optical properties with respect to the Ag2S cores, and better resistance to oxidation, as demonstrated by X-ray absorption experiments.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/journal articlehttps://doi.org/10.1039/C9NR02087Jhttps://pubs.rsc.org/en/content/articlelanding/2019/nr/c9nr02087jrestricted access546Química inorgánica (Química)2303 Química Inorgánica