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Novel Ru II Complexes with Bispidine‐Based Bridging Ligands: Luminescence Sensing and Photocatalytic Properties
Author(s) -
Busche Christoph,
Comba Peter,
Mayboroda Andrey,
Wadepohl Hubert
Publication year - 2010
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200901058
Subject(s) - chemistry , luminescence , electron paramagnetic resonance , denticity , bipyridine , bridging ligand , derivative (finance) , metal , ruthenium , metal ions in aqueous solution , copper , photochemistry , metal organic framework , photocatalysis , medicinal chemistry , polymer chemistry , inorganic chemistry , crystallography , organic chemistry , crystal structure , catalysis , physics , optoelectronics , nuclear magnetic resonance , financial economics , economics , adsorption
New ligands with a bidentate bipyridyl (bpy) and a tetradentate bispidine (bisp) subunit (bipyridyl = 2,2′‐bipyridine derivative, bispidine = 3,7‐diazabicyclo[3.3.1]nonane derivative) and their heterodinuclear {[Ru(bpy) 3 ] 2+ ‐[M(bisp)] 2+ } complexes (M = Cu 2+ , Fe 2+ ) were prepared and characterized. The luminescence of the mononuclear Ru II complexes (metal‐free bisp subunit) is efficiently quenched in presence of Cu II . An EPR spectroscopic study reveals thatvisible light irradiation does not alter the oxidation states of the two metal ions in {[Ru(bpy) 3 ] 2+ ‐[Cu(bisp)] 2+ }, i.e. there is energy rather than electron transfer. The heterodinuclear {[Ru(bpy) 3 ] 2+ ‐[Cu(bisp)] 2+ } complex shows a significantphotocatalytic activity in the aziridination of styrene.