期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 24, 期 13, 页码 3225-3233出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201704999
关键词
hydrogen production; macrocycles; photocatalysis; platinum; porphyrins
资金
- German Science Foundation [DFG-SCHW 1454/3-2]
- COST-action [CM1202]
A series of heterodinuclear complexes, M-1-PtX2 with M=H-2, Zn, Cu or Co, X=Cl or I, has been synthesized, and first results on their photocatalytic activity in visible light driven proton reduction are presented. The compounds are based on a phenanthroline extended meso-tetramesitylporphyrin bridging ligand ( H-2-1) incorporating different metal centers in the porphyrin moiety, which functions as a photosensitizer unit. The well-known catalytically active PtX2 fragment resides in the phenanthroline coordination pocket. The synthesis was optimized, compounds were fully characterized and a solid-state structure could be obtained for selected complexes. Photocatalytic studies in acetonitrile/water mixtures using triethylamine as sacrificial electron donor showed that the activity of the complexes depends strongly on the metal center in the porphyrin moiety as well as the halogen ions bound at the platinum( II) center.
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