Large Polyoxotitanate Clusters: Well-Defined Models for Pure-Phase TiO2 Structures and Surfaces

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Large Polyoxotitanate Clusters: Well-Defined Models for Pure-Phase TiO2 Structures and Surfaces

Benedict, Jason B.; Freindorf, Renata; Trzop, Elzbieta; Cogswell, Jeffrey; Coppens, Philip

Journal of the American Chemical Society, 10/2010, Volume: 132, Issue: 39

Journal Article

Careful control of the temperature and duration of the reaction between titanium tert-butoxide and acetic acid leads to the formation of new polyoxotitanate clusters with 14, 18, and 28 Ti atoms. They are considered intermediates in the growth of Ti/O nanoclusters of increasing size. The Ti28 cluster is the largest crystallized to date. UV/vis spectroscopy on this cluster reveals that the optical band gap is blue-shifted with respect to a cluster containing only 17 titanium atoms indicating that the optical properties are more heavily influenced by the internal structure of the particle than its size.

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Benedict, Jason B. | Freindorf, Renata | Trzop, Elzbieta | Cogswell, Jeffrey | Coppens, Philip

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