title: Anion sensing in aqueous media by photo-active transition-metal bipyridyl rotaxanes.
abstract: A chloride anion templation methodology is utilized in the construction of novel transition-metal rhenium(I) and ruthenium(II) bipyridyl appended [2]rotaxanes. (1)H NMR spectroscopic titrations reveal the ability of the rotaxanes to selectively bind chloride over the more basic oxoanions, with the ruthenium(II) bipyridyl appended rotaxane strongly binding chloride in 30% water. Photophysical investigations demonstrate the ability of the rotaxanes to sense anions in aqueous media, with chloride being selectively complexed, in general agreement with NMR spectroscopy determined anion binding data.
authors: Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA UK.
authors: Laura M
authors: LM
authors: Hancock
authors: Enrico
authors: E
authors: Marchi
authors: Paola
authors: P
authors: Ceroni
authors: Paul D
authors: PD
authors: Beer
mesh_terms: D015082:2,2'-Dipyridyl / Q000737:chemistry*; D000838:Anions / Q000737:chemistry; D002712:Chlorides / Q000737:chemistry*; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D055668:Photochemical Processes; D043862:Rotaxanes / Q000737:chemistry*; D028561:Transition Elements / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D000838:Anions; D002712:Chlorides; D009942:Organometallic Compounds; D043862:Rotaxanes; D028561:Transition Elements; D014867:Water; D015082:2,2'-Dipyridyl