title: Sensitization of ultra-long-range excited-state electron transfer by energy transfer in a polymerized film.
abstract: Distance-dependent energy transfer occurs from the Metal-to-Ligand Charge Transfer (MLCT) excited state Ru(bpy)3(2+*) to an anthracene-acrylate derivative (Acr-An) incorporated into the polymer network of a semirigid poly(ethyleneglycol)dimethacrylate monolith. Following excitation, Ru(bpy)3(2+*) to Acr-An triplet energy transfer occurs followed by long-range, Acr-(3)An-Acr-An → Acr-An-Acr-(3)An, energy migration. With methyl viologen dication (MV(2+)) added as a trap, Acr-(3)An + MV(2+) → Acr-An(+) + MV(+) electron transfer results in sensitized electron transfer quenching over a distance of approximately 90 Å.
authors.affiliation: Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
authors.forename: Akitaka
authors.initials: A
authors.lastname: Ito
authors.forename: David J
authors.initials: DJ
authors.lastname: Stewart
authors.forename: Zhen
authors.initials: Z
authors.lastname: Fang
authors.forename: M Kyle
authors.initials: MK
authors.lastname: Brennaman
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Meyer
mesh_terms: D000179:Acrylates / Q000737:chemistry; D000873:Anthracenes / Q000737:chemistry; D004583:Electrons; D004735:Energy Transfer; D007700:Kinetics; D049449:Luminescence; D008956:Models, Chemical; D015233:Models, Statistical; D015394:Molecular Structure; D010777:Photochemistry / Q000379:methods; D011092:Polyethylene Glycols / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry; D013053:Spectrophotometry / Q000379:methods; D013997:Time Factors
chemical_list: D000179:Acrylates; D000873:Anthracenes; D011108:Polymers; D011092:Polyethylene Glycols; D012428:Ruthenium; C036658:acrylic acid