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We report for the first time the nonhydrolytic synthesis of soluble SnO2 nanocrystals, by the decomposition at temperatures between 230 and 250 °C of tin(II) 2-ethylhexanoate in diphenyl ether and in the presence of amines as surface capping agents. X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) studies showed that highly crystalline nanoparticles were obtained with a mean size ranging from about 3 to about 3.5 nm, depending on the length of the alkyl chain of the amine. The use of metal 2-ethylhexanoate in the synthesis of oxide nanocrystals was generalized by preparing ZnO nanocrystals from the decomposition under similar conditions of zinc(II) 2-ethylhexanoate. In this case, soluble nanocrystals with a size ranging from about 5 to 8 nm were obtained. It is shown that the decomposition path of the precursor depends on the specific metal, and may result in the sudden …
American Chemical Society
Publication date: 
13 Dec 2005

Mauro Epifani, Jordi Arbiol, Raül Díaz, Mariano J Perálvarez, Pietro Siciliano, Joan R Morante

Biblio References: 
Volume: 17 Issue: 25 Pages: 6468-6472
Chemistry of materials