Schiener, A. and Magerl, A. and Krach, A. and Seifert, S. and Steinrueck, H. -G. and Zagorac, J. and Zahn, D. and Weihrich, R. (2015) In situ investigation of two-step nucleation and growth of CdS nanoparticles from solution. NANOSCALE, 7 (26). pp. 11328-11333. ISSN 2040-3364, 2040-3372
Full text not available from this repository. (Request a copy)Abstract
We report on a combined ultra-fast in situ SAXS and WAXS study along a free-jet providing insight into the evolution of the morphology and crystalline structure of CdS quantum dots in the very early stage of nucleation between 100 mu s and 2.5 ms with a time resolution down to 10 mu s. Accessing this yet unexplored time regime provides direct evidence of a two-step mechanism via formation of prenucleation clusters followed by nanoparticle nucleation from coalescing precursors. Using ab initio calculations, the latter species is identified as Cd13S4(SH)(18) clusters, the stability of which results from a compact surface and inner structure.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; X-RAY-SCATTERING; QUANTUM DOTS; SEMICONDUCTOR CLUSTERS; BASIS-SET; NANOCRYSTALS; CRYSTALLITES; SIMULATION; DYNAMICS; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Arbeitskreis Dr. Richard Weihrich |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 31 Jul 2019 08:10 |
| Last Modified: | 31 Jul 2019 08:10 |
| URI: | https://pred.uni-regensburg.de/id/eprint/6231 |
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