Aryl-diamide bridged binuclear ruthenium (II) tris(bipyridine) complexes: Synthesis, photophysical, electrochemical and electrochemiluminescence properties

The central aromatic hydrocarbon and ruthenium tris(bipyridine) have been covalently connected to form novel symmetrical hydrocarbon centered binuclear Ru (II) complexes. Of the three complexes studied, the naphthalene ring centered complex 3c exhibited the best electro-chemiluminescence properties,...

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Bibliographic Details
Published in:Journal of organometallic chemistry 2006-10, Vol.691 (20), p.4189-4195
Main Authors: Li, Minna, Liu, Jianhui, Zhao, Changzhi, Sun, Licheng
Format: Article
Language:English
Subjects:
Binuclear ruthenium complexes
bipyridine
devices
ecl
Electrochemiluminescence
electrogenerated chemiluminescence
emission
emitter
heck reaction
high-brightness
ligands
luminescence
Polypyridine ligands
Synthesis
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Summary:The central aromatic hydrocarbon and ruthenium tris(bipyridine) have been covalently connected to form novel symmetrical hydrocarbon centered binuclear Ru (II) complexes. Of the three complexes studied, the naphthalene ring centered complex 3c exhibited the best electro-chemiluminescence properties, 6 times stronger than that of the reference compound Ru(bpy) 3 2 + . Several new symmetrical aromatic hydrocarbon bridged bipyridine ligands and their binuclear Ru (II) complexes have been designed, synthesized and characterized on the basis of 1H NMR, MS and HRMS. Their absorption and emission properties, electrochemical behaviors and electrochemical luminescence were investigated. All ruthenium complexes show characteristic MLCT absorption and similar redox potential. Among the three complexes reported, 4c has the best electrochemical luminescence property.
ISSN:0022-328X
1872-8561
1872-8561
DOI:10.1016/j.jorganchem.2006.06.034