2024
Electron Transfer Dynamics at Dye-Sensitized SnO2/TiO2 Core/Shell Electrodes in Aqueous/Nonaqueous Electrolyte Mixtures
Xiao L, Spies J, Sheehan C, Zeng Z, Gao Y, Gao T, Ehrlacher A, Zuerch M, Brudvig G, Mallouk T. Electron Transfer Dynamics at Dye-Sensitized SnO2/TiO2 Core/Shell Electrodes in Aqueous/Nonaqueous Electrolyte Mixtures. Journal Of The American Chemical Society 2024, 146: 18117-18127. PMID: 38900942, DOI: 10.1021/jacs.4c05187.Peer-Reviewed Original ResearchFlat band potentialOptical-pump terahertz-probe spectroscopyTransient absorption spectroscopyCore/shell electrodesSolvent electrolytesElectron transferElectron injectionBand potentialDynamics of photoinduced electron transferNanosecond transient absorption spectroscopyNegative flat band potentialSemiconductor flat-band potentialDye-sensitized photoanodeOxidized dye moleculesPhotoinduced electron injectionPhotoinduced electron transferElectron transfer dynamicsElectron injection efficiencySlow electron transferInjection efficiencyIncreasing acetonitrile concentrationConcentration of acetonitrileIncreasing concentrations of acetonitrileConduction band electronsCharge separation
2023
Dominant Role of Hole Transport Pathway in Achieving Record High Photoconductivity in Two‐Dimensional Metal–Organic Frameworks
Wang D, Ostresh S, Streater D, He P, Nyakuchena J, Ma Q, Zhang X, Neu J, Brudvig G, Huang J. Dominant Role of Hole Transport Pathway in Achieving Record High Photoconductivity in Two‐Dimensional Metal–Organic Frameworks. Angewandte Chemie 2023, 135 DOI: 10.1002/ange.202309505.Peer-Reviewed Original ResearchTransient absorption spectroscopyX-ray transient absorption spectroscopyPhotoelectric devicesAbsorption spectroscopyOptical transient absorption spectroscopyTime-resolved terahertz spectroscopyHigh photoconductivityHole transport mechanismTwo-dimensional metalsElectron dynamicsDensity functional theory calculationsTerahertz spectroscopyElectronic statesFunctional theory calculationsMetal-organic frameworksPhotoconductivityTheory calculationsCharge transportMobile chargesSpectroscopyHole transport pathwaysCharge transport pathwaysDominant Role of Hole Transport Pathway in Achieving Record High Photoconductivity in Two‐Dimensional Metal–Organic Frameworks
Wang D, Ostresh S, Streater D, He P, Nyakuchena J, Ma Q, Zhang X, Neu J, Brudvig G, Huang J. Dominant Role of Hole Transport Pathway in Achieving Record High Photoconductivity in Two‐Dimensional Metal–Organic Frameworks. Angewandte Chemie International Edition 2023, 62: e202309505. PMID: 37872121, DOI: 10.1002/anie.202309505.Peer-Reviewed Original ResearchTransient absorption spectroscopyX-ray transient absorption spectroscopyPhotoelectric devicesAbsorption spectroscopyOptical transient absorption spectroscopyTime-resolved terahertz spectroscopyHigh photoconductivityHole transport mechanismTwo-dimensional metalsElectron dynamicsDensity functional theory calculationsTerahertz spectroscopyElectronic statesFunctional theory calculationsMetal-organic frameworksPhotoconductivityTheory calculationsCharge transportMobile chargesSpectroscopyHole transport pathwaysCharge transport pathways
2021
Tuning the Conduction Band for Interfacial Electron Transfer: Dye-Sensitized Sn x Ti1–x O2 Photoanodes for Water Splitting
Spies J, Swierk J, Kelly H, Capobianco M, Regan K, Batista V, Brudvig G, Schmuttenmaer C. Tuning the Conduction Band for Interfacial Electron Transfer: Dye-Sensitized Sn x Ti1–x O2 Photoanodes for Water Splitting. ACS Applied Energy Materials 2021, 4: 4695-4703. DOI: 10.1021/acsaem.1c00305.Peer-Reviewed Original ResearchDFT calculationsAbsorption spectroscopyInterfacial electron transfer dynamicsUltrafast transient absorption spectroscopyInterfacial electron transferElectron transfer dynamicsUltrafast electron injectionConduction bandPeriodic DFT calculationsTransient absorption spectroscopyLinear absorption spectroscopyDye sensitizersWater splittingElectron transferTransfer dynamicsComposition of SnElectron acceptorAbsorption spectraElectron injectionD characterElectronic statesSpectroscopyPhotoanodeSnDyePhotoinduced Charge Transport in Conductive Metal Organic Frameworks
Ostresh S, Nyakuchena J, Pattenale B, Neu J, Streater D, Fiankor C, Hu W, Kinigstein E, Zhang J, Zhang X, Schmuttenmaer C, Huang J, Brudvig G. Photoinduced Charge Transport in Conductive Metal Organic Frameworks. 2021, 00: 1-2. DOI: 10.1109/irmmw-thz50926.2021.9567551.Peer-Reviewed Original ResearchConductive metal-organic frameworksMetal-organic frameworksPhotocatalytic applicationsCharge transport mechanismOrganic frameworksPorous crystalline materialsCharge transportTerahertzCrystalline materialsTransport mechanismRational designPromising classConductivityApplicationsAbsorption spectroscopyTransient absorption spectroscopyMaterials
2018
Direct Interfacial Electron Transfer from High-Potential Porphyrins into Semiconductor Surfaces: A Comparison of Linkers and Anchoring Groups
Jiang J, Spies J, Swierk J, Matula A, Regan K, Romano N, Brennan B, Crabtree R, Batista V, Schmuttenmaer C, Brudvig G. Direct Interfacial Electron Transfer from High-Potential Porphyrins into Semiconductor Surfaces: A Comparison of Linkers and Anchoring Groups. The Journal Of Physical Chemistry C 2018, 122: 13529-13539. DOI: 10.1021/acs.jpcc.7b12405.Peer-Reviewed Original ResearchMetal oxide surfacesDirect interfacial electron transferTime-resolved terahertzInterfacial electron transferOxide surfaceSemiconductor surfacesPhotoelectrochemical stabilitySnO2 substratePhotoelectrochemical cellsInjection yieldTransient spectroscopySurfaceAqueous photoelectrochemical cellDye photosensitizerIET dynamicsTerahertzElectron transferSeries of linkersDirect contactSpectroscopyAbsorption spectroscopyTransferTransient absorption spectroscopyOverall length
2017
Photodriven Oxidation of Surface-Bound Iridium-Based Molecular Water-Oxidation Catalysts on Perylene-3,4-dicarboximide-Sensitized TiO2 Electrodes Protected by an Al2O3 Layer
Kamire R, Materna K, Hoffeditz W, Phelan B, Thomsen J, Farha O, Hupp J, Brudvig G, Wasielewski M. Photodriven Oxidation of Surface-Bound Iridium-Based Molecular Water-Oxidation Catalysts on Perylene-3,4-dicarboximide-Sensitized TiO2 Electrodes Protected by an Al2O3 Layer. The Journal Of Physical Chemistry C 2017, 121: 3752-3764. DOI: 10.1021/acs.jpcc.6b11672.Peer-Reviewed Original ResearchMolecular water oxidation catalystsDye-sensitized photoelectrochemical cellsWater oxidation catalystsCharge transfer dynamicsSolar fuel productionCharge recombinationAtomic layer depositionHigher photocurrentTransfer dynamicsDye-sensitized TiO2 photoanodesFemtosecond transient absorption spectroscopyCharge transfer rateTransient absorption spectroscopyALD layersFuel productionDicarboximide chromophorePhotodriven oxidationMononuclear catalystsDinuclear catalystsCatalyst oxidationDye moleculesInitial charge injectionMolecular structurePhotoelectrochemical experimentsAbsorption spectroscopy