Ligand-Induced Shape Transformation of PbSe Nanocrystals

We present a study of the relation between the surface chemistry and nanocrystal shape of PbSe nanocrystals with a variable Pb-to-Se stoichiometry and density of oleate ligands. The oleate ligand density and binding configuration are monitored by nuclear magnetic resonance and Fourier transform infr...

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Veröffentlicht in:Chemistry of materials : a publication of the American Chemical Society. - 1998. - 29(2017), 9 vom: 09. Mai, Seite 4122-4128
1. Verfasser: Peters, Joep L (VerfasserIn)
Weitere Verfasser: van den Bos, Karel H W, Van Aert, Sandra, Goris, Bart, Bals, Sara, Vanmaekelbergh, Daniël
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Chemistry of materials : a publication of the American Chemical Society
Schlagworte:Journal Article
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520 |a We present a study of the relation between the surface chemistry and nanocrystal shape of PbSe nanocrystals with a variable Pb-to-Se stoichiometry and density of oleate ligands. The oleate ligand density and binding configuration are monitored by nuclear magnetic resonance and Fourier transform infrared absorbance spectroscopy, allowing us to quantify the number of surface-attached ligands per NC and the nature of the surface-Pb-oleate configuration. The three-dimensional shape of the PbSe nanocrystals is obtained from high-angle annular dark field scanning transmission electron microscopy combined with an atom counting method. We show that the enhanced oleate capping results in a stabilization and extension of the {111} facets, and a crystal shape transformation from a truncated nanocube to a truncated octahedron 
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700 1 |a van den Bos, Karel H W  |e verfasserin  |4 aut 
700 1 |a Van Aert, Sandra  |e verfasserin  |4 aut 
700 1 |a Goris, Bart  |e verfasserin  |4 aut 
700 1 |a Bals, Sara  |e verfasserin  |4 aut 
700 1 |a Vanmaekelbergh, Daniël  |e verfasserin  |4 aut 
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