AI Article Synopsis
- The reaction between Cd(OAc)·2HO and selenourea in a mix of primary and secondary amines produces crystalline CdSe quantum platelets at room temperature.
- Their structure and quality are confirmed using techniques like X-ray diffraction and high-resolution transmission electron microscopy, alongside their distinct light absorption and emission properties.
- The process shows that a specific size of CdSe nanocluster acts as a key intermediate, which then converts into quantum platelets through a first-order reaction, without any delay in the process.
Article Abstract
Reaction of Cd(OAc)·2HO and selenourea in primary-amine/secondary-amine cosolvent mixtures affords crystalline CdSe quantum platelets at room temperature. Their crystallinity is established by X-ray diffraction analysis (XRD), high-resolution transmission electron microscopy (TEM), and their sharp extinction and photoluminescence spectra. Reaction monitoring establishes the magic-size nanocluster (CdSe) to be a key intermediate in the growth process, which converts to CdSe quantum platelets by first-order kinetics with no induction period. The results are interpreted to indicate that the critical crystal-nucleus size for CdSe under these conditions is in the range of (CdSe) to (CdSe). The nanocluster is obtained in isolated form as [(CdSe)(-octylamine)(di--pentylamine)], which is proposed to function as crystal nuclei that may be stored in a bottle.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3985485 | PMC |
| http://dx.doi.org/10.1021/cm404068e | DOI Listing |
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