title: Iron Polypyridyl Complexes for Photocatalytic Hydrogen Generation.
abstract: A series of Fe(III) complexes were recently reported that are stable and active electrocatalysts for reducing protons into hydrogen gas. Herein, we report the incorporation of these electrocatalysts into a photocatalytic system for hydrogen production. Hydrogen evolution is observed when these catalysts are paired with fluorescein (chromophore) and triethylamine (sacrificial electron source) in a 1:1 ethanol:water mixture. The photocatalytic system is highly active and stable, achieving TONs > 2100 (with respect to catalyst) after 24 h. Catalysis proceeds through a reductive quenching pathway with a quantum yield of over 3%.
authors.affiliation: Department of Chemistry, College of William and Mary , 540 Landrum Drive, Williamsburg, Virginia 23185, United States.
authors.forename: Carolyn L
authors.initials: CL
authors.lastname: Hartley
authors.affiliation: Department of Chemistry, College of William and Mary , 540 Landrum Drive, Williamsburg, Virginia 23185, United States.
authors.forename: Ryan J
authors.initials: RJ
authors.lastname: DiRisio
authors.affiliation: Department of Chemistry, College of William and Mary , 540 Landrum Drive, Williamsburg, Virginia 23185, United States.
authors.forename: Megan E
authors.initials: ME
authors.lastname: Screen
authors.affiliation: Department of Chemistry, College of William and Mary , 540 Landrum Drive, Williamsburg, Virginia 23185, United States.
authors.forename: Kathryn J
authors.initials: KJ
authors.lastname: Mayer
authors.affiliation: Department of Chemistry, College of William and Mary , 540 Landrum Drive, Williamsburg, Virginia 23185, United States.
authors.forename: William R
authors.initials: WR
authors.lastname: McNamara