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Lookup NU author(s): Craig Sams, Emeritus Professor Anthony Harriman
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The [Ru(bipy)2(1)](PF6)2 (bipy refers to 2,2′-bipyridine) complex, comprising a ruthenium(II) tris(2,2′-bipyridine) luminophore covalently linked to a di[(o-triethyleneglycoxy)phenyl]amine crown ether 1, has been synthesized and fully characterized. The photophysical properties of this metal complex have been examined in solution at ambient temperature. Luminescence from the metal complex is enhanced significantly in the presence of various adventitious cations, including protons. In particular, Li+ cations bind to the crown ether, as evidenced by 1H NMR and luminescence spectroscopy. Cation binding serves to decrease the rate of reductive quenching of the triplet state of the metal complex, thereby increasing the extent of luminescence. The solution-phase conformation of [Ru(bipy)2(1)](PF6)2, with and without encapsulated Li+, has been examined by 2-D NMR and by molecular dynamics simulations.
Author(s): Charbonniere LJ, Ziessel RF, Sams CA, Harriman A
Publication type: Article
Publication status: Published
Journal: Inorganic Chemistry
Year: 2003
Volume: 42
Issue: 11
Pages: 3466-3474
ISSN (print): 0020-1669
ISSN (electronic): 1520-510X
Publisher: American Chemical Society
URL: http://dx.doi.org/10.1021/ic020671t
DOI: 10.1021/ic020671t
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