Zwischen Naturphilosophie und Anthropologie. Konzeptionen des Alters zwischen Aufklärung und Romantik

Colloidal Anisotropic ZnO–Fe@FexOy Nanoarchitectures with Interface-Mediated Exchange-Bias and Band-Edge Ultraviolet Fluorescence

“…In more detail, monodisperse ZnO NRs seeds were grown by aminolytic decomposition of Zn(Ac)2 in an alkyl amine environment at 240 °C (NR-1, Figure S1a) and at 280 °C (NR-2, Figure S1b). In this procedure the amine molecules play two complementary roles: first, they operate as nucleophilic agents that attack the carbon atom of the carbonyl moiety in Zn(Ac)2, thereby leading to the generation of the actual ZnO monomers (zinc hydroxo/oxo molecular or radical species), which will eventually condense and build the oxide lattice; 39,42,43 and second, they can act as facet-preferential coordinating agents for the resulting nanocrystals, regulating their size and shape evolution. 35 Previous studies have shown that reactions carried out at relatively high-er amine to zinc precursor molar ratios, in conjunction with high decomposition temperature, result in NRs with larger diameter (D) but lower aspect ratios (L/D).…”