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- Title
Bandgap Engineering of Titanium-Oxo Clusters: Labile Surface Sites Used for Ligand Substitution and Metal Incorporation.
- Authors
Liu, Jin‐Xiu; Gao, Mei‐Yan; Fang, Wei‐Hui; Zhang, Lei; Zhang, Jian
- Abstract
Through the labile coordination sites of a robust phosphonate-stabilized titanium-oxo cluster, 14 O-donor ligands have been successfully introduced without changing the cluster core. The increasing electron-withdrawing effect of the organic species allows the gradual reduction of the bandgaps of the {Ti6} complexes. Transition-metal ions are then incorporated by the use of bifunctional O/N-donor ligands, organizing these {Ti6} clusters into polymeric structures. The coordination environments of the applied metal ions show significant influence on their visible-light adsorption. Both the above structural functionalizations also tune the photocatalytic H2 production activities of these clusters. This work provides a systematic bandgap engineering study of titanium-oxo clusters, which is important not only for their future photocatalytic applications, also for the better understanding of the structure-property relationships.
- Subjects
TITANIUM compounds; TRANSITION metal compounds spectra; OXO compounds; BAND gaps; PHOTOCATALYSIS; METAL clusters; COORDINATE covalent bond; LIGAND exchange reactions; PHOSPHONATES
- Publication
Angewandte Chemie, 2016, Vol 128, Issue 17, p5246
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201510455