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 separationBODIPY Chemisorbed on SnO2 and TiO2 Surfaces for Photoelectrochemical Applications
Jayworth J, Decavoli C, Capobianco M, Menzel J, Adler S, Kocoj C, Freeze J, Crabtree R, Guo P, Batista V, Brudvig G. BODIPY Chemisorbed on SnO2 and TiO2 Surfaces for Photoelectrochemical Applications. ACS Applied Materials & Interfaces 2024, 16: 14841-14851. PMID: 38488153, DOI: 10.1021/acsami.3c18827.Peer-Reviewed Original ResearchCarboxylic acid anchoring groupsAnchoring groupsElectron injectionSolar-driven water splittingTransient absorption spectroscopic studiesDye-sensitized photoelectrochemical cellsEfficiency of electron injectionSacrificial electron donorEfficient electron injectionElectron-hole recombinationAbsorption spectroscopic studiesBODIPY-based dyesWater splittingPhotoelectrochemical applicationsPhotoelectrochemical cellsSemiconducting photoelectrodesTiO2 surfacePhotoelectrochemical studiesPhotoexcited dyeSolar fuelsCharge transferMetal oxidesBinding modeCarboxylic acidsSpectroscopic studies
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 statesSpectroscopyPhotoanodeSnDye
2013
Electron Injection Dynamics from Photoexcited Porphyrin Dyes into SnO2 and TiO2 Nanoparticles
Milot R, Moore G, Crabtree R, Brudvig G, Schmuttenmaer C. Electron Injection Dynamics from Photoexcited Porphyrin Dyes into SnO2 and TiO2 Nanoparticles. The Journal Of Physical Chemistry C 2013, 117: 21662-21670. DOI: 10.1021/jp406734t.Peer-Reviewed Original ResearchElectron injection dynamicsTime-resolved terahertz spectroscopyTiO2 conduction band edgeElectron injectionInjection dynamicsSnO2 nanoparticle surfaceElectron injection rateConduction band edgePorphyrin dyesWater oxidationNanoparticle surfaceBand edgeDeactivation routeZinc derivativeSoret band excitationExcited-state energiesTiO2 nanoparticlesDyeOnly dyeKinetic considerationsExcited statesTerahertz spectroscopyBand excitationSensitizersPhotoanodeModular Assembly of High-Potential Zinc Porphyrin Photosensitizers Attached to TiO2 with a Series of Anchoring Groups
Martini L, Moore G, Milot R, Cai L, Sheehan S, Schmuttenmaer C, Brudvig G, Crabtree R. Modular Assembly of High-Potential Zinc Porphyrin Photosensitizers Attached to TiO2 with a Series of Anchoring Groups. The Journal Of Physical Chemistry C 2013, 117: 14526-14533. DOI: 10.1021/jp4053456.Peer-Reviewed Original Research
2010
Water -stable, hydroxamate anchors for functionalization of TiO 2 surfaces with ultrafast interfacial electron transfer
McNamara W, Milot R, Song H, Snoeberger R, Batista V, Schmuttenmaer C, Brudvig G, Crabtree R. Water -stable, hydroxamate anchors for functionalization of TiO 2 surfaces with ultrafast interfacial electron transfer. Energy & Environmental Science 2010, 3: 917-923. DOI: 10.1039/c001065k.Peer-Reviewed Original ResearchInterfacial electron transferUltrafast interfacial electron transferTiO2 nanoparticlesSolar energy conversionElectron transferPhotocatalytic cellsNanoparticlesOrganic dyesTiO 2 surfaceMetal oxidesEnergy conversionElectron injectionConduction bandTHz spectroscopyAqueous conditionsTiO2Transition metal complexesNeutral pHFunctionalizationMetal complexesCarboxylate anchorStrong bindingStable moleculesOxideCarboxylic acids