title: Energy transfer mediated by asymmetric hydrogen-bonded interfaces.
abstract: Amidine-appended ferrocene derivatives form a supramolecular assembly with Ru(ii)(bpy-COOH) (L)22+complexes (bpy-COOH is 4-CO2H-4'-CH3-bpy and L = bpy, 2,2'-bipyridine or btfmbpy, 4,4'-bis(trifluoromethyl)-2,2'-bipyridine). Steady-state, time-resolved spectroscopy and kinetic isotope effects establish that the metal-to-ligand charge transfer excited states of the Ru(ii) complexes are quenched by proton-coupled energy transfer (PCEnT). These results show that proton motion can be effective in mediating not only electron transfer (ET) but energy transfer (EnT) as well.
authors.affiliation: Department of Chemistry, Amherst College, P.O. Box 5000, Amherst, MA, 01002-5000, USA.
authors.forename: Elizabeth R
authors.initials: ER
authors.lastname: Young
authors.affiliation: Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA.
authors.forename: Joel
authors.initials: J
authors.lastname: Rosenthal
authors.affiliation: Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139-4307, USA. nocera@mit.edu ; Tel: +1 617 253 5537.
authors.forename: Daniel G
authors.initials: DG
authors.lastname: Nocera