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A colloidal nonaqueous approach to semiconductor−magnetic hybrid nanocrystals (HNCs) with selectable heterodimer topologies and tunable geometric parameters is demonstrated. Brookite TiO2 nanorods, distinguished by a curved shape-tapered profile with richly faceted terminations, are exploited as substrate seeds onto which a single spherical domain of inverse spinel iron oxide can be epitaxially grown at either one apex or any location along their longitudinal sidewalls in a hot surfactant environment. The topologically controlled arrangement of the component material lattices, the crystallographic relationships holding between them, and strain distribution across individual heterostructures have been studied by combining X-ray diffraction and absorption techniques with high-resolution transmission electron microscopy investigations. Supported by such structural knowledge, the synthetic achievements are …
American Chemical Society
Publication date: 
24 Feb 2010

Raffaella Buonsanti, Vincenzo Grillo, Elvio Carlino, Cinzia Giannini, Fabia Gozzo, Mar Garcia-Hernandez, Miguel Angel Garcia, Roberto Cingolani, P Davide Cozzoli

Biblio References: 
Volume: 132 Issue: 7 Pages: 2437-2464
Journal of the American Chemical Society