2016
Heterogenized Iridium Water-Oxidation Catalyst from a Silatrane Precursor
Materna K, Rudshteyn B, Brennan B, Kane M, Bloomfield A, Huang D, Shopov D, Batista V, Crabtree R, Brudvig G. Heterogenized Iridium Water-Oxidation Catalyst from a Silatrane Precursor. ACS Catalysis 2016, 6: 5371-5377. DOI: 10.1021/acscatal.6b01101.Peer-Reviewed Original ResearchIridium Water Oxidation CatalystsMetal oxide semiconductor surfacesWater oxidation catalystsExperimental IR spectraOxide semiconductor surfaceWater oxidationHeterogenized catalystTurnover frequencyIR spectraSilatrane precursorCovalent attachmentFunctional groupsTurnover numberM KNO3CatalystSemiconductor surfacesPrecatalystOverpotentialCatalysisComputational modelingOxidationPrecursorsKNO3SpectraSurface
2005
Resonance Raman spectroscopy of carotenoids in Photosystem II core complexes
Tracewell C, Cua A, Bocian D, Brudvig G. Resonance Raman spectroscopy of carotenoids in Photosystem II core complexes. Photosynthesis Research 2005, 83: 45-52. PMID: 16143906, DOI: 10.1007/s11120-004-2350-6.Peer-Reviewed Original ResearchConceptsII core complexesPhotosystem II core complexResonance Raman spectroscopyPS II core complexesRaman spectroscopyTrans configurationSecondary electron transfer reactionsElectron transfer reactionsMolecular wiresNeutral carotenoidsRR spectraAbsorption bandsCore complexDifference experimentsReaction centersExcitation wavelengthComplexesSpectroscopyPS IIRR resultsReactionΒ-caroteneSpectraCarotenoidsConfiguration
2004
Q-Band EPR of the S2 State of Photosystem II Confirms an S=5/2 Origin of the X-Band g=4.1 Signal
Haddy A, Lakshmi K, Brudvig G, Frank H. Q-Band EPR of the S2 State of Photosystem II Confirms an S=5/2 Origin of the X-Band g=4.1 Signal. Biophysical Journal 2004, 87: 2885-2896. PMID: 15454478, PMCID: PMC1304705, DOI: 10.1529/biophysj.104.040238.Peer-Reviewed Original ResearchConceptsSame spin systemS2 stateSpin systemsZero-field splitting valuesMiddle Kramers doubletPhotosystem IILight-induced signalsS2 oxidation stateX-bandKramers doubletX-band signalQ-band EPRPSII-enriched membrane fragmentsSplitting valuesLow-field signalMn clusterQ-bandState originEPR signalOxidation stateStateDoubletSpectraSignalsGHz
1999
Low-Temperature Optical and Resonance Raman Spectra of a Carotenoid Cation Radical in Photosystem II
Vrettos J, Stewart D, de Paula J, Brudvig G. Low-Temperature Optical and Resonance Raman Spectra of a Carotenoid Cation Radical in Photosystem II. The Journal Of Physical Chemistry B 1999, 103: 6403-6406. DOI: 10.1021/jp991464q.Peer-Reviewed Original ResearchCarotenoid cation radicalsCarotenoid cationResonance Raman spectraCation radicalsSecondary electron transfer pathwayRaman spectraFT-Raman spectraPhotosystem II core complexElectron transfer pathwayII core complexesPhotosystem IIReversible photooxidationChemical oxidationCationsLow-temperature illuminationFirst exampleCytochrome b559Absorbance maximumPhotooxidationRadicalsSpectraCore complexPossible natureOxidationSpectrum characteristics
1995
[22] Electron paramagnetic resonance spectroscopy
Brudvig G. [22] Electron paramagnetic resonance spectroscopy. Methods In Enzymology 1995, 246: 536-554. PMID: 7752937, DOI: 10.1016/0076-6879(95)46024-1.Peer-Reviewed Original ResearchConceptsElectron paramagnetic resonance spectroscopyParamagnetic resonance spectroscopyX-band EPR spectrometerEPR spectroscopyParamagnetic speciesResonance spectroscopyParamagnetic centersBiological systemsEPR spectrometerRedox reactionsDiamagnetic proteinsEPR spectraActive siteEPR methodSpectroscopySample requirementsSpectrometerEPRReactionValuable techniqueSpectraApplicationsSpeciesStructure