Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume 2013, Issue 26, Pages 4628-4635Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201300431
Keywords
Photochemistry; Sensitizers; Ruthenium; UV; Vis spectroscopy; Singlet oxygen; Photooxidation
Categories
Funding
- European Union (European Social Fund - ESF)
- National Strategic Reference Framework (NSRF)
- THALES through the European Social Fund
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A series of Ru-II-based photosensitizers were synthesized and extensively characterized. The ligand utilized to coordinate ruthenium was a pyridine-quinoline hybrid bearing an anthracene moiety, and it was combined with commercially available 2,2-bipyridine (bpy) for the heteroleptic complexes. The produced bichromophoric complexes show very strong and wide UV/Vis absorption bands. The ability of these complexes to act as triplet photosensitizers in the production of singlet oxygen was thoroughly studied by utilizing the photooxidation of 1,3-diphenylisobenzofuran as the test reaction. The most efficient photosensitizer in this new family of Ru-II complexes affords singlet oxygen quantum yields and production-rate efficiencies up to two times higher than those of the benchmark [Ru(bpy)(3)](2+) parent complex.
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