纳米晶
材料科学
配体(生物化学)
表征(材料科学)
硫化物
金属
聚合物
吸收(声学)
水溶液
产量(工程)
水介质
化学工程
纳米技术
组合化学
结晶学
物理化学
化学
冶金
受体
复合材料
工程类
生物化学
作者
Diego Ruiz,Martín Mizrahi,Harrisson D. A. Santos,Daniel Jaque,Callum M. S. Jones,José Marqués-Hueso,Carlos Jacinto,Félix G. Requejo,Almudena Torres‐Pardo,José M. González‐Calbet,Beatriz H. Juárez
出处
期刊:Nanoscale
[The Royal Society of Chemistry]
日期:2019-01-01
卷期号:11 (18): 9194-9200
被引量:15
摘要
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.
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