| Autor: |
Ruiz D; IMDEA Nanoscience, Faraday 9, Campus de Cantoblanco, 28049, Madrid, Spain. beatriz.hernandez@imdea.org., Mizrahi M, Santos HDA, Jaque D, Jones CMS, Marqués-Hueso J, Jacinto C, Requejo FG, Torres-Pardo A, González-Calbet JM, Juárez BH |
| Jazyk: |
angličtina |
| Zdroj: |
Nanoscale [Nanoscale] 2019 May 09; Vol. 11 (18), pp. 9194-9200. |
| DOI: |
10.1039/c9nr02087j |
| Abstrakt: |
Syntheses 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. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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