Formation of a Dimeric Precursor Intermediate during the Nonaqueous Synthesis of Titanium Dioxide Nanocrystals. Issue 12 (4th November 2016)

• Record Type: Journal Article
• Authors: Zimmermann, Mandy; Ibrom, Kerstin; Jones, Peter G.; Garnweitner, Georg
• Is Part Of: ChemNanoMat. Volume 2:Issue 12(2016)
• Page Start: 1073
• Page End: 1076
• Publication Date: 2016-11-04
• Subjects: coordination complexes -- nanoparticles -- nonaqueous synthesis -- particle formation -- titanium; Nanochemistry -- Periodicals; Nanostructured materials -- Periodicals; Nanochemistry; Nanostructured materials; Periodicals; 541.2
• DOI: 10.1002/cnma.201600264
• Languages: English
• ISSNs: 2199-692X

Abstract

Abstract: For tailoring the size and morphology of nanoparticles, a deep knowledge of the mechanism leading to particle formation is required. We have investigated the reaction mechanisms in the synthesis of anatase nanocrystals by the so‐called benzyl alcohol route as a model for binary metal oxides, and elucidated the chemical structure of cluster species involved in the reaction using NMR spectroscopy and single crystal X‐ray structure analysis. In the first reaction step, a novel dimeric coordination complex is formed via ligand exchange, and was identified as the crucial compound initiating particle formation in the synthesis process. Abstract : The formation mechanisms of nanoparticles are investigated extensively to enable their rational design. By a combination of one‐ and two‐dimensional NMR spectroscopy and single crystal structure analysis, this work shows that oligomeric intermediates occur during the nonaqueous synthesis of metal oxide nanoparticles, proving the formation of a novel dimeric coordination complex during the synthesis of anatase nanocrystals.