Steen Steenken

Steen Steenken's AcademicInfluence.com Rankings

Steen Steenken

Chemistry

#2860

World Rank

#3827

Historical Rank

Physical Chemistry

#353

World Rank

#402

Historical Rank

chemistry Degrees

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Chemistry

Steen Steenken's Degrees

PhD Chemistry University of California, Berkeley
Masters Chemistry University of California, Berkeley
Bachelors Chemistry University of California, Berkeley

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Steen Steenken's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

How Easily Oxidizable Is DNA? One-Electron Reduction Potentials of Adenosine and Guanosine Radicals in Aqueous Solution (1997) (1046)
Purine bases, nucleosides, and nucleotides: aqueous solution redox chemistry and transformation reactions of their radical cations and e- and OH adducts (1989) (956)
Flavonoids as Antioxidants (1994) (845)
Reaction pathways and mechanisms of photodegradation of pesticides. (2002) (530)
H-Atom Transfer Is A Preferred Antioxidant Mechanism of Curcumin (1999) (394)
One-electron redox potentials of phenols. Hydroxy- and aminophenols and related compounds of biological interest (1982) (334)
Reduction potentials of flavonoid and model phenoxyl radicals. Which ring in flavonoids is responsible for antioxidant activity (1996) (308)
Formation of 8-hydroxy(deoxy)guanosine and generation of strand breaks at guanine residues in DNA by singlet oxygen. (1991) (278)
Structure and acid-base properties of one-electron-oxidized deoxyguanosine, guanosine, and 1-methylguanosine (1989) (275)
Standard electrode potentials involving radicals in aqueous solution: inorganic radicals (IUPAC Technical Report) (2015) (259)
How curcumin works preferentially with water soluble antioxidants. (2001) (246)
Antioxidant Potential of Gallocatechins. A Pulse Radiolysis and Laser Photolysis Study (1995) (242)
Pattern of hydroxyl radical addition to uracil and methyl- and carboxyl-substituted uracils. Electron transfer of hydroxyl adducts with N,N,N',N'-tetramethyl-p-phenylenediamine and tetranitromethane (1981) (229)
The trap depth (in DNA) of 8-oxo-7,8-dihydro-2'deoxyguanosine as derived from electron-transfer equilibria in aqueous solution (2000) (203)
Formation of radical cations of methoxylated benzenes by reaction with hydroxyl radicals, thallium(2+), silver(2+), and peroxysulfate (SO4.-) in aqueous solution. Optical and conductometric pulse radiolysis and in situ radiolysis electron spin resonance study (1975) (190)
Electrophilic reaction of the hydroxyl radical with phenol. Determination of the distribution of isomeric dihydroxycyclohexadienyl radicals (1980) (168)
Antioxidant properties of flavonoids: reduction potentials and electron transfer reactions of flavonoid radicals (1998) (168)
Reaction of HO* with guanine derivatives in aqueous solution: formation of two different redox-active OH-adduct radicals and their unimolecular transformation reactions. Properties of G(-H)*. (2000) (165)
One-electron-reduction potentials of pyrimidine bases, nucleosides, and nucleotides in aqueous solution. Consequences for DNA redox chemistry (1992) (160)
Ionization of purine nucleosides and nucleotides and their components by 193-nm laser photolysis in aqueous solution : model studies for oxidative damage of DNA (1992) (157)
Reaction of tert-butoxy radicals with phenols. Comparison with the reactions of carbonyl triplets (1981) (131)
Electron transfer in DNA? Competition by ultra-fast proton transfer? (1997) (128)
Pattern of hydroxyl radical addition to cytosine and 1-, 3-, 5-, and 6-substituted cytosines. Electron transfer and dehydration reactions of the hydroxyl adducts (1983) (120)
Pulse radiolysis and electron spin resonance studies concerning the reaction of SO4.cntdot.- with alcohols and ethers in aqueous solution (1978) (117)
Electron-transfer-induced acidity/basicity and reactivity changes of purine and pyrimidine bases. Consequences of redox processes for DNA base pairs. (1992) (116)
Pattern of OH radical reaction with adenine and its nucleosides and nucleotides. Characterization of two types of isomeric OH adduct and their unimolecular transformation reactions (1990) (115)
Addition–elimination paths in electron-transfer reactions between radicals and molecules. Oxidation of organic molecules by the OH radical (1987) (114)
Electron transfer in di(deoxy)nucleoside phosphates in aqueous solution: rapid migration of oxidative damage (via adenine) to guanine (1993) (106)
Flash-photolysis generation and reactivities of triarylmethyl and diarylmethyl cations in aqueous solutions (1989) (103)
Electron transfer rates and equilibriums between substituted phenoxide ions and phenoxyl radicals (1979) (100)
Photo-heterolysis and -homolysis of substituted diphenylmethyl halides, acetates, and phenyl ethers in acetonitrile : characterization of diphenylmethyl cations and radicals generated by 248-nm laser flash photolysis (1990) (89)
Oxidation of Sulfides by Peroxidases. Involvement of Radical Cations and the Rate of the Oxygen Rebound Step (1996) (87)
Reactivities of triarylmethyl and diarylmethyl cations with azide ion investigated by laser flash photolysis. Diffusion-controlled reactions (1991) (83)
Phenoxyl radical complexes of gallium, scandium, iron and manganese. (1997) (82)
Direct evidence for the formation of thymine radical cations from the reaction of sulfate (SO4.cntdot.-) with thymine derivatives: A pulse radiolysis study with optical and conductance detection (1990) (81)
Nanosecond laser flash photolytic generation and lifetimes in solvolytic media of diarylmethyl and p-methoxyphenethyl cations (1988) (75)
One-electron reduction of nitrobenzenes by .alpha.-hydroxyalkyl radicals via addition/elimination. An example of an organic inner-sphere electron-transfer reaction (1984) (73)
Pattern of hydroxyl radical reaction with 6- and 9-substituted purines: effect of substituents on the rates and activation parameters of the unimolecular transformation reactions of two isomeric hydroxyl adducts (1987) (73)
Solvent effects in the reactions of peroxyl radicals with organic reductants: evidence for proton-transfer-mediated electron transfer (1989) (72)
Antioxidant Potential of Theaflavins. A Pulse Radiolysis Study (1997) (71)
Mechanisms of direct and TiO2-photocatalysed UV degradation of phenylurea herbicides. (2005) (70)
Pattern of OH radical reaction with N6,N6-dimethyladenosine. Production of three isomeric OH adducts and their dehydration and ring-opening reactions (1987) (70)
Laser Flash Photolysis Generation, Spectra, and Lifetimes of Phenylcarbenium Ions in Trifluoroethanol and Hexafluoroisopropyl Alcohol. On the UV Spectrum of the Benzyl Cation (1991) (67)
Laser flash photolysis of 9-fluorenol. Production and reactivities of the 9-fluorenol radical cation and the 9-fluorenyl cation (1990) (67)
Ferrocenyl-functionalised terpyridines and their transition-metal complexes: syntheses, structures and spectroscopic and electrochemical properties. (2003) (63)
Lifetime, Reduction Potential and Base-Induced Fragmentation of the Veratryl Alcohol Radical Cation in Aqueous Solution. Pulse Radiolysis Studies on a Ligninase ``Mediator'' (1998) (62)
Spectral properties and absolute rate constants for beta-scission of ring-substituted cumyloxyl radicals. A laser flash photolysis study. (2002) (62)
Kinetics of the reactions of laser-flash photolytically generated carbenium ions with alkyl and silyl enol ethers. Comparison with the reactivity toward alkenes, allylsilanes and alcohols (1991) (60)
DFT calculations on the electrophilic reaction with water of the guanine and adenine radical cations. A model for the situation in DNAElectronic Supplementary Information available. See http://www.rsc.org/suppdata/cp/b1/b109204a/ (2002) (57)
Intramolecular Electron Transfer from Mn or Ligand Phenolate to Photochemically Generated RuIII in Multinuclear Ru/Mn Complexes. Laser Flash Photolysis and EPR Studies on Photosystem II Models (1999) (57)
Reactivities of diarylmethyl and triarylmethyl cations with primary amines in aqueous acetonitrile solutions. The importance of amine hydration (1992) (56)
Antioxidant activity of the pyridoindole stobadine. Pulse radiolytic characterization of one-electron-oxidized stobadine and quenching of singlet molecular oxygen. (1992) (56)
Rate constants for reduction of substituted methylperoxyl radicals by ascorbate ions and N,N,N',N'-tetramethyl-p-phenylenediamine (1989) (55)
Substituent effects on the spectral, acid-base, and redox properties of indolyl radicals: a pulse radiolysis study (1992) (54)
Selective para hydroxylation of phenol and aniline by singlet molecular oxygen. (1993) (51)
Generation and Reactivity of Aromatic Thioether Radical Cations in Aqueous Solution As Studied by Pulse Radiolysis (1997) (51)
Oxidative demethoxylation of methoxylated phenols and hydroxybenzoic acids by the hydroxyl radical. An in situ electron spin resonance, conductometric pulse radiolysis and product analysis study (1977) (50)
Oxidation of phenolates and phenylenediamines by 2-alkononyl radicals produced from 1,2-dihydroxy- and 1-hydroxy-2-alkoxyalkyl radicals (1979) (50)
Carbenes and the oxygen-hydrogen bond: spectroscopic evidence for protonation of diarylcarbenes to give diarylcarbenium ions (1990) (49)
Iron complexes of gallocatechins. Antioxidant action or iron regulation (1998) (49)
ESR studies of electron and hydrogen adducts of thymine and uracil and their derivatives and of 4,6-dihydroxypyrimidines in aqueous solution: comparison with data from solid state. The protonation at carbon of the electron adducts (1986) (49)
Electron adducts of adenine nucleosides and nucleotides in aqueous solution : protonation at two carbon sites (C2 and C8) and intra- and intermolecular catalysis by phosphate (1992) (48)
Lifetimes of .alpha.-dialkoxy carbocations produced via radical cations generated by electron transfer and photoionization in aqueous solution (1989) (47)
Electrophilic reactivity of the triphenylmethyl carbocation in aqueous solutions (1986) (47)
Ionization of polynucleotides and DNA in aqueous solution by 193 nm pulsed laser light: identification of base-derived radicals. (1992) (46)
Generation of radical-cations from naphthalene and some derivatives, both by photoionization and reaction with SO4–˙: formation and reactions studied by laser flash photolysis (1990) (45)
Reaction of Hydrated Electrons with Guanine Nucleosides: Fast Protonation on Carbon of the Electron Adduct (1992) (45)
On the hydrolysis of AgII, TlII, SnIII and CuIII (1978) (43)
Electrophilic reactions of xanthylium carbocations produced by flash photolysis of 9-xanthenols (1989) (43)
Kinetics and energetics of one-electron-transfer reactions involving tryptophan neutral and cation radicals (1991) (41)
Formation of Radical Cations of Methoxylated Benzenes by Reaction with OH Radicals, Tl2+, Ag2+, and S04- in Aqueous Solution. An Optical and Conductometric Pulse Radiolysis and in situ Radiolysis Electron Spin Resonance Study (1976) (41)
Radiation Chemistry of DNA Model Compounds. Part IV. Phosphate Ester Cleavage in Radicals Derived from Glycerol Phosphates (1974) (41)
Lifetimes and UV-visible absorption spectra of benzyl, phenethyl, and cumyl carbocations and corresponding vinyl cations. A laser flash photolysis study (1999) (41)
Pulse radiolysis and election spin resonance studies of the dehydration of radicals from 1,2-diols and related compounds (1986) (40)
Oxidation of substituted alkyl radicals by hexachloroiridate(2-), hexacyanoferrate(3-), and permanganate ions in aqueous solution. Electron transfer versus chlorine transfer from hexachloroiridate(2-) ion (1982) (40)
Reaction of 6-yl radicals of uracil, thymine, and cytosine and their nucleosides and nucleotides with nitrobenzenes via addition to give nitroxide radicals. Hydroxide ion-catalyzed nitroxide heterolysis (1985) (39)
One-electron oxidation of alkylbenzenes in acetonitrile by photochemically produced nitrate radical: evidence for an inner-sphere mechanism (1993) (36)
Pattern of addition of hydroxyl radicals to the spin traps .alpha.-pyridyl 1-oxide N-tert-butyl nitrone (1980) (36)
Photophysical and Redox Properties of a Series of Phthalocyanines: Relation with Their Photodynamic Activities on TF‐1 and Daudi Leukemic Cells (1996) (36)
Redox reactivity of bis(1,4,7-triazacyclononane)iron(II/III) complexes in alkaline solution and characterization of a deprotonated species: amidoiron(III) vs aminyliron(II) ground-state formulation. EPR, kinetic, pulse radiolysis, and laser photolysis study (1988) (36)
DFT studies on the pairing abilities of the one-electron reduced or oxidized adenine–thymine base pair (2002) (36)
Photoionization (.lambda. = 248 or 308 nm) of triphenylmethyl radical in aqueous solution. Formation of triphenylmethyl carbocation (1990) (35)
One-electron oxidation of .alpha.-monoalkoxyalkyl radicals by tetranitromethane via an intermediate adduct. Influence of the radical structure on the rate of decomposition of the adduct (1980) (35)
Direct observation of β-fluoro-substituted 4-methoxyphenethyl cations by laser flash photolysis (1993) (33)
Formation of radical zwitterions from methoxylated benzoic acids. 1. One electron oxidation by thallium(2+), silver(2+), and sulfate(1-) ions (1977) (33)
Site of OH radical attack on dihydrouracil and some of its methyl derivatives. (1984) (33)
(Photo)ionization of tris(phenolato)iron(III) complexes: generation of phenoxyl radical as ligand (1993) (32)
Reactivity of .alpha.-heteroatom-substituted alkyl radicals with nitrobenzenes in aqueous solution: an entropy controlled electron transfer/addition mechanism (1988) (32)
Transient Phenoxyl Radicals: Formation and Properties in Aqueous Solutions (2005) (32)
Side-Chain Fragmentation of Arylalkanol Radical Cations. Carbon−Carbon and Carbon−Hydrogen Bond Cleavage and the Role of α- and β-OH Groups (1996) (32)
Solvent-dependent C-OH homolysis and heterolysis in electronically excited 9-fluorenol: the life and solvation time of the 9-fluorenyl cation in water. (2001) (31)
First stages of photodegradation of the urea herbicides Fenuron, Monuron and Diuron (2001) (31)
Antioxidant action of stobadine. (1994) (30)
Adjacent guanines as preferred sites for strand breaks in plasmid DNA irradiated with 193 nm and 248 nm UV laser light. (1996) (30)
One-electron reduction potentials of 5-indoxyl radicals: a pulse radiolysis and laser photolysis study (1990) (29)
Radiation-chemical production and lifetimes of trialkoxymethyl carbocations in aqueous solution (1986) (29)
On the kinetics and energetics of one-electron oxidation of 1,3,5-triazines. (2003) (29)
DNA-base radicals. Their base pairing abilities as calculated by DFT (2002) (28)
[3 + 2] Cycloadditions and Protonation by Alcohols of Photochemically Generated Nitrile Ylides from 2H-Azirines. Formation and Reactivities of Azaallenium Cations (1997) (28)
Structure, acid/base properties and transformation reactions of purine radicals. (1989) (28)
Reactions of oxidizing radicals with 4,6-dihydroxypyrimidines as model compounds for uracil, thymine, and cytosine (1987) (27)
Electron spin resonance and pulse radiolysis studies on the reaction of OH sup sm bullet and SO sub 4 sup sm bullet minus with five-membered heterocyclic compounds in aqueous solution (1990) (27)
The complexation energy of the one-electron oxidized guanine–cytosine base pair and its parent system with small cations. A DFT-study (2003) (27)
Fragmentation of .alpha.-alkoxyalkyl radicals. Electron paramagnetic resonance study (1975) (27)
Photoionization of Organic Phosphates by 193 nm Laser Light in Aqueous Solution: Rapid Intramolecular H-Transfer to the Primarily Formed Phosphate Radical. A Model for Ionization-Induced Chain-Breakage in DNA? (1998) (26)
Direct Evidence for the Formation of Thymine Radical Cations from the Reaction of SO‐ 4 with Thymine Derivatives: A Pulse Radiolysis Study with Optical and Conductance Detection (1991) (26)
Multiple Bonds between Main Group Elements and Transition Metals. 144.1 Photoreactivity of Organorhenium(VII) Oxides (1995) (26)
Reversible nitrogen-nitrogen bond homolysis in tetrakis(trifluoromethylthio)hydrazine at room temperature. Electron spin resonance, thermodynamic, and kinetic results (1983) (25)
Formation of radical cations and zwitterions versus demethoxylation in the reaction of OH with a series of methoxylated benzenes and benzoic acids. An example of the electrophilic nature of the OH radical (1977) (24)
Reactivities of 9-arylfluoren-9-yl and 1-(4-dimethylaminophenyl)ethyl cations in water and trifluoroethanol studied by laser flash photolysis (1992) (24)
Making Photochemically Generated Phenyl Cations Visible by Addition to Aromatics: Production of Phenylcyclohexadienyl Cations and Their Reactions with Bases/Nucleophiles (1998) (24)
Is "frank" DNA-strand breakage via the guanine radical thermodynamically and sterically possible? (2001) (23)
Oxygen Acidity of 1-Arylalkanol Radical Cations. 4-Methoxycumyloxyl Radical as −C(Me)2−O--to-Nucleus Electron-Transfer Intermediate in the Reaction of 4-Methoxycumyl Alcohol Radical Cation with OH- (1998) (23)
Oxidation of methoxyhydroxycyclohexadienyl radicals by quinones. The influence of the isomeric structure of the radical on the rate constant for electron transfer (1979) (23)
One‐Electron‐Reduction Potentials of Pyrimidine Bases, Nucleosides, and Nucleotides in Aqueous Solution. Consequences for DNA Redox Chemistry. (1992) (23)
Base-Catalyzed C−H Deprotonation of 4-Methoxybenzyl Alcohol Radical Cations in Water: Evidence for a Carbon-to-Oxygen 1,2-H-Shift Mechanism (1997) (23)
Hydrogen bonding between histidine and lignin model compounds or redox mediators as calculated with the DFT method. Effects on the ease of oxidation. (2004) (22)
Selectivity of addition of the hydroxyl radical to ring positions of pyridine and pyridine mono- and dicarboxylic acids. An electron spin resonance investigation (1978) (22)
248-nm Laser flash photoprotonation of mesitylene, hexamethylbenzene, and 1,3,5-trimethoxybenzene in 1,1,1,3,3,3-hexafluoroisopropyl alcohol. Formation and electrophilic reactivities of the cyclohexadienyl cations (1990) (21)
Photoionization of diarylmethyl radicals in acetonitrile and alcohol-water : laser flash production of diarylcarbenium ions (1993) (21)
Carbon-carbon bond homolysis in hexakis(trifluoromethylmercapto)ethane at room temperature. Thermodynamic, kinetic, and electron spin resonance results (1979) (20)
Photo- and radiation-induced chemical generation and reactions of styrene radical cations in polar and non-polar solvents (1995) (20)
Oxygen Versus Carbon Acidity in the Side-Chain Fragmentation of 2-, 3-, and 4-Arylalkanol Radical Cations in Aqueous Solution: The Influence of the Distance between the OH Group and the Aromatic Ring1 (1999) (19)
Kinetic and Product Studies on the Side‐Chain Fragmentation of 1‐Arylalkanol Radical Cations in Aqueous Solution: Oxygen versus Carbon Acidity (1999) (19)
One-electron reduction of nitrobenzenes by hydroxyl and hydrogen radical adducts to 6-methyluracil and 6-methylisocytosine via electron transfer and addition/elimination: effect of substituents on rates and activation parameters for formation and heterolysis of nitroxyl-type tetrahedral intermediate (1988) (19)
Radiation chemical production, lifetimes, and structure-activity relations for .alpha.-dialkoxyalkyl carbocations in aqueous solutions: Importance of solvation for cation reactivity (1988) (18)
Hydroxyl radical induced damage to the purine bases of DNA : in vitro studies (1993) (18)
Photo‐ and Radiation‐Chemical Generation and Thermodynamic Properties of the Aminium and Aminyl Radicals Derived from N‐Phenylglycine and (N‐Chloro,N‐phenyl)glycine in Aqueous Solution: Evidence for a New Photoionization Mechanism for Aromatic Amines (1999) (18)
A kinetic method for the measurement of the pKR value of the triphenylmethyl cation in the aqueous standard state (1990) (18)
Pulse Radiolysis and Electron Spin Resonance Studies on the Formation of Phenoxyl Radicals by Reaction of OH Radicals with Methoxylated Phenols and Hydroxybenzoic Acids (1977) (17)
Observation of Cationic Intermediates in the Photolysis of 1-Phenylcyclohexene (1993) (17)
Multiple-Photon Chemistry of 9-(Phenoxymethyl)- and 9,10-Bis(phenoxymethyl)anthracenes in the Laser-Jet: Generation, Photochemistry, and Time-Resolved Laser-Flash Spectroscopy of Anthracenylmethyl Radicals and Pulse Radiolysis of 9-(Bromomethyl)anthracene (1997) (17)
PATTERN OF HYDROXYL RADICAL ADDITION TO URACIL AND METHYL- AND CARBOXYL-SUBSTITUTED URACILS. ELECTRON TRANSFER OF HYDROXYL ADDUCTS WITH N,N,N′,N′-TETRAMETHYL-P-PHENYLENEDIAMINE AND TETRANITROMETHANE (1981) (17)
RADICAL-CATION [3+2] CYCLOADDITIONS OF 2H-AZIRINES - MECHANISTIC STUDIES CONCERNING THE INTERMEDIATE RADICAL-CATION (1993) (16)
PHOTOFRAGMENTATION OF HYDROXYACETONE, 1.3‐DIHYDROXYACETONE, AND 1.3‐DICARBOXYACETONE IN AQUEOUS SOLUTION. AN EPR STUDY (1975) (16)
DFT calculations on the deprotonation site of the one-electron oxidised guanine-cytosine base pair. (2010) (16)
One-electron reduction of 2-aminopurine in the aqueous phase. A DFT and pulse radiolysis study. (2005) (16)
Laser flash photolysis observation of the 1-p-methoxyphenylvlnyl cation by photoprotonation of p-methoxyphenylacetylene. Comparison with the 1-p-methoxyphenethyl cation. (1990) (16)
Photodissociation of N-(Triphenylmethyl)anilines: A Laser Flash Photolysis, ESR, and Product Analysis Study1 (1998) (15)
Oxidation vs. fragmentation in radiosensitization. Reactions of α-alkoxyalkyl radicals with 4-nitrobenzonitrile and oxygen. A pulse radiolysis and product analysis study (1995) (15)
Laser Flash Photolysis Study of Arylcyclopropylcarbenium Ions: Cation Stabilizing Abilities of Cyclopropyl and Phenyl Groups (1996) (15)
Photochemistry of 2,3-dimethyl-2,3-diphenylbutane: carbon-carbon homolysis and protonation-induced side-chain fragmentation (1992) (15)
One-electron redox reactions between radicals and organic molecules. An addition/elimination (inner-sphere) path [1] (1996) (15)
IONIZATION OF 1,3-DIOXOLES IN AQUEOUS-SOLUTION BY 248-NM LASER FLASH-PHOTOLYSIS - CHARACTERIZATION OF THE RADICAL CATIONS (1989) (15)
Substituent Effects on the Spectral, Acid-Base, and Redox Properties of Indolyl Radicals: A Pulse Radiolysis Study. (1992) (15)
Fragmentation of radicals derived from glycolaldehyde and glyceraldehyde in aqueous solution. An EPR study. (1973) (15)
Pattern of OH Radical Reaction with 6- and 9-Substituted Purines (I)-(III). Effect of Substituents on the Rates and Activation Parameters of the Unimolecular Transformation Reactions of Two Isomeric OH Adducts (1987) (15)
Regioselective photoprotonation of 1,3-dimethoxybenzenes in 1,1,1,3,3,3-hexafluoroisopropyl alcohol. H-D isotope-exchange and laser flash photolysis studies (1992) (15)
Pronounced solvent effect on the absorption spectra of the photochemically produced 2,4-dinitrobenzyl carbanion (1987) (14)
Photoionization of β-carotene via electron transfer from excited states to chlorinated hydrocarbon solvents. A picosecond transient absorption study (2002) (14)
Photo- and radiation-chemical production of radical cations of methylbenzenes and benzyl alcohols and their reactivity in aqueous solution (2002) (14)
Formation of radical zwitterions from methoxylated benzoic acids. 2. Hydroxyl adducts as precursors (1977) (14)
Reaction of .alpha.-hydroxyalkyl radicals and their anions with oxidized dithiothreitol: a pulse radiolysis and product analysis study (1989) (14)
Solvent Induced Intramolecular Electron Exchange Kinetics in 1,3‐Isodisubstituted Aromatic Radical Anions II. Activation Parameters (1990) (14)
Production of α-Siloxycarbenium Ions by Protonation of Photochemically Generated α-Siloxycarbenes. Formation Mechanism and Reactivities with Nucleophiles (1996) (14)
ONE-ELECTRON REDUCTION OF NITROBENZENES BY α-HYDROXYALKYL RADICALS VIA ADDITION/ELIMINATION. AN EXAMPLE OF AN ORGANIC INNER-SPHERE ELECTRON-TRANSFER REACTION (1985) (13)
Photo- and radiation-chemical formation and electrophilic and electron transfer reactivities of enolether radical cations in aqueous solution. (2001) (13)
Photochemical Formation and Electrophilic Reactivities of Vinyl Cations. Influence of Substituents, Anionic Leaving Groups, Solvents, and Excitation Wavelength on Photoheterolysis and Photohomolysis of 1-(p-R-Phenyl)-2-(2,2'-biphenyldiyl)vinyl Halides (1994) (13)
The calculated base pairing energy of 8-oxoguanine in the syn-anti conformation with cytosine, thymine, adenine and guanine (2005) (12)
Photoreaction of Biacetyl and 1,3‐Dioxole Derivatives: Modification of the Mechanism of the Photoreaction of Carbonyl Compounds with Electron‐Rich Olefins (1984) (12)
Formation of cyclic sulphuranyl radicals of the type [RSSR2] from 1,3-bis(alkylthio)propanes by laser flash photolysis of 1,n-bis(alkylthio)alkanes (1988) (12)
Reaction of OH radicals with nitrophenols in aqueous solution (1978) (12)
Pattern of hydroxyl radical reaction with N6,N6,9-trimethyladenine: dehydroxylation and ring opening of isomeric hydroxyl adducts (1991) (12)
CYCLOHEXADIENYL-TYPE CATIONIC INTERMEDIATES IN THE FRIEDEL-CRAFTS ALKYLATION OF BENZENE DERIVATIVES WITH THE 9-FLUORENYL CATION : OBSERVATION BY LASER FLASH PHOTOLYSIS (1992) (12)
Flash photolysis study of a Friedel–Crafts alkylation. Reaction of the photogenerated 9-fluorenyl cation with aromatic compounds (1996) (11)
Common Origin of Enthalpic and Entropic Substituent Effects in Reactions of Benzhydryl Cations with Nucleophiles (1995) (11)
Photodissociation of N-Arylmethylanilines: A Laser Flash Photolysis, Fluorescence, and Product Analysis Study(1). (1999) (11)
Reaction of hydroxyl radicals with 2- and 4-pyridones in aqueous solution. An electron spin resonance and pulse radiolysis study (1979) (11)
Radical cations of phenyl-substituted aziridines: what are the conditions for ring opening? (2005) (10)
Kinetic and Stereochemistry of the SO 4⊙⊖‐Induced Hydroxylation of Cyclohexenes in Aqueous Solution (1988) (9)
Laser flash photolysis of aziridines. Spectroscopic and kinetic characterization of azomethine ylides. Their [3 + 2] cyclization with alkenes and protonation by water–alcohols to yield iminium ions1 (1998) (9)
Photoionization versus photoheterolysis of all-trans-retinol. The effects of solvent and laser radiation intensity. (2007) (9)
PHOTOFRAGMENTATION OF α‐OXOCARBOXYLIC ACIDS IN AQUEOUS SOLUTION. AN EPR STUDY. FORMATION OF SEMIDIONE RADICALS BY DECARBOXYLATIVE SUBSTITUTION OF α‐OXOCARBOXYLIC ACIDS BY ACYL RADICALS‐I: GLYOXYLIC, PYRUVIC, α‐OXOBUTYRIC, α‐OXOGLUTARIC AND α‐OXOISOCAPROlC ACIDS (1975) (9)
EPR INVESTIGATIONS CONCERNING THE STRUCTURE OF THE ASCORBIC ACID RADICAL IN WATER, ALCOHOL, AND DIMETHYLSULFOXIDE (1973) (9)
One-Electron Redox Reactions Between Radicals and Molecules. Dominance of Inner-Sphere Mechanisms (1989) (9)
−OH-Induced shift from carbon to oxygen acidity in the side-chain deprotonation of 2-, 3- and 4-methoxybenzyl alcohol radical cations in aqueous solution: results from pulse radiolysis and DFT calculations (2003) (8)
Structural effects on the OH-promoted fragmentation of methoxy-substituted 1-arylalkanol radical cations in aqueous solution: the role of oxygen acidity. (2001) (8)
Structure and Acid-Base Properties of One-Electron-Oxidized Deoxyguanosine, Guanosine, and 1-Methylguanosine. (1989) (7)
Flash photolysis production of the tetrahedral intermediate of the methanolysis of methyl benzoate. Direct measurement of the rate of breakdown of the conjugate base form (1990) (7)
Radical oxidation of xanthines : a reaction pathway to uric acid ? (1996) (7)
Fumarate and maleate as spin traps for acyl radicals. Decarboxylation of the adduct radicals to yield 1-carboxy-3-oxyallyl radical dianions (1977) (7)
Photohomolysis and Photoionization of Substituted Tetraphenylethanes and C–C Fragmentation of 1,1,2,2‐Tetra(p‐R‐phenyl)ethane Radical Cations (R=H, CH3, OCH3, Cl) (1998) (7)
Production of carbenium ions from carbenes by protonation (1998) (7)
Reactivity of [CoIIIW12O40]5– with organic radicals in aqueous solution. Evidence for an electron transfer mechanism (1996) (6)
Styrene triplets: Absorption spectra, lifetimes and quantum yields (1996) (6)
Generation of High‐Oxidation States of Myoglobin in the Nanosecond Time‐Scale by Laser Photoionization (1998) (6)
Transformation Reactions of Two Isomeric OH-Adducts of 2’-Deoxyguanosine (1991) (5)
Photoionization of α-alkoxybenzyl radicals to yieldα-alkoxybenzyl cations. Photochemistry ofω,ω-dimethoxy-ω-phenylacetophenone in polar solvents at high light intensities1 (1997) (5)
Detection of Phenyl-Substituted Radical Cations Derived from Cyclopentyl- and Urazole-Type Azoalkanes by Pulse Radiolysis: Influence of Heteroatom Substitution on the Radical Cation Reactivities (1997) (5)
Intramolecular electron exchange with solvent participation: electron spin resonance study of the radical-anion of benzene-1,3-dicarbaldehyde in propan-2-ol–water mixtures (1986) (5)
Photochemistry of Phenylallenes in Protic Media. Formation of Allyl Cations by Way of Vinylcarbenes (1995) (5)
Flash photolysis observation and lifetimes of the cation intermediates in the intramolecular photoprotonation of tryptamine, tryptophan and their N-methyl derivatives (1992) (5)
One-Electron Reduction Potentials of 5-Indoxyl Radicals. A Pulse Radiolysis and Laser Photolysis Study. (1990) (5)
An In situ photolysis-e.s.r. investigation of 5-bromo- and 5-nitro-2-furoic acid (1985) (5)
Chemical Reactivity of DNA Radicals - A Reflection of their Redox Properties (1991) (5)
CHEMILUMINESCENCE ON OXIDATION OF ACRIDAN BY DIBENZOYLPEROXIDE (1970) (4)
ONE-ELECTRON OXIDATION OF α-MONOALKOXYALKYL RADICALS BY TETRANITROMETHANE VIA AN INTERMEDIATE ADDUCT. INFLUENCE OF THE RADICAL STRUCTURE ON THE RATE OF DECOMPOSITION OF THE ADDUCT (1980) (4)
Water-Assisted Intramolecular Electron Transfer from the Ring to the Side Chain in N,N,N',N'-Tetraalkyl-para-phenylenediamine Radicals-The Reverse of Side Chain Deprotonation of Radical Cations. (2001) (4)
Two Routes in the Formation of Hydrogen Halides from OH Adducts of Halogenated Anisoles in Aqueous Solution (1978) (4)
Photochemistry of 3H-indazoles in protic media. Benzyl cations via protonation of 2-methylene-3,5-cyclohexadienylidenes (1995) (4)
BIPHOTONIC GENERATION OF CARBENES AND CARBOCATIONS BY LASER FLASH PHOTOLYSIS (1996) (4)
One-Electron Redox Reactions Between Radicals and Organic Molecules. An Addition/Elimination (Inner-Sphere) Path (1996) (4)
ESR Studies of Electron and Hydrogen Adducts of Thymine and Uracil and Their Derivatives and of 4,6-Dihydroxypyrimidines in Aqueous Solution. (1986) (4)
Reaction of 6-yl Radicals of Uracil, Thymine, and Cytosine and Their Nucleosides and Nucleotides with Nitrobenzenes via Addition To Give Nitroxide Radicals. (1986) (3)
Pulse-radiolytic studies on the reactions of SO - · 4 with uracil dervivatives (1990) (3)
Photochemical generation of the N-isopropylbenzonitrilium ion and unusually slow trapping by azide ion (1999) (3)
Formation of Radical Cations from 1,2‐ and 1,4‐Dimethoxybenzene by Electron Transfer to TI2+ and Ag2+ in Aqueous Solution (1975) (3)
Multiple-Photon Chemistry in the Laser-Jet: Photochemistry and Time-Resolved Laser-Flash Spectroscopy of the 1-Naphthylmethyl Radical (1997) (3)
Generation of Radical Cations from Naphthalene and Some Derivatives (I), Both by Photoionization and Reaction with SO-· 4: Formation and Reactions Studied by Laser Flash Photolysis (1990) (3)
Photo‐Heterolysis and ‐Homolysis of Substituted Diphenylmethyl Halides, Acetates, and Phenyl Ethers in Acetonitrile: Characterization of Diphenylmethyl Cations and Radicals Generated by 248‐nm Laser Flash Photolysis (1991) (3)
Comparison of reactions of radical cations of 1-phenylalkanols produced by photoionization and by one-electron oxidation in aqueous solution (2001) (3)
ESR and Pulse Radiolysis Studies on the Reaction of OH· and SO·- 4 with Five-Membered Heterocyclic Compounds in Aqueous Solution. (1990) (3)
Flash Photolysis Generation and Reactivities of Triarylmethyl and Diarylmethyl Cations in Aqueous Solutions. (1989) (3)
Radicals in Aqueous Solution from Fe(III) Complexes with Macrocyclic Ligands Containing Phenolates (1997) (2)
Pattern of OH Radical Reaction with N6,N6,9-Trimethyladenine. Dehydroxylation and Ring Opening of Isomeric OH Adducts. (1992) (2)
Formation of radical cations of aziridines generated by laser flash photolysis. (2004) (2)
Radiation Chemistry of Phenols (2005) (2)
Structure of radicals derived from hydroxypyrimidines in aqueous solution (2002) (1)
Kinetic Method for the Measurement of the pKR Value of the Triphenylmethyl Cation in the Aqueous Standard State. (1991) (1)
Generation of a Heterocyclic 1,3‐Cyclopentanediyl Radical Cation by Chemically Induced Electron Transfer Oxidation and Pulse Radiolysis (1996) (1)
Photoionization of Diarylmethyl Radicals in Acetonitrile and Alcohol- Water: Laser Flash Production of Diarylcarbenium Ions (1993) (1)
Rate Constants for Reduction of Substituted Methylperoxyl Radicals by Ascorbate Ions and N,N,N′,N′-Tetramethyl-p-phenylenediamine. (1989) (1)
A quantum chemical investigation of the anisole radical cation with inclusion of aqueous solvation effects (1991) (1)
Electron Transfer in Radicals (2008) (1)
Reactivity of α-Heteroatom-Substituted Alkyl Radicals with Nitrobenzenes in Aqueous Solution: An Entropy-Controlled Electron-Transfer/Addition Mechanism. (1988) (1)
PHOTOIONIZATION OF ALPHA -ALKOXYBENZYL RADICALS TO YIELD ALPHA -ALKOXYBENZYL CATIONS. PHOTOCHEMISTRY OF OMEGA ,OMEGA -DINETHOXY-OMEGA -PHENYLACETOPHEN ONE IN POLAR SOLVENTS AT HIGH LIGHT INTENSITIES (1997) (1)
PHOTOFRAGMENTATION OF α‐OXOCARBOXYLIC ACIDS IN AQUEOUS SOLUTION. AN EPR STUDY. FORMATION OF SEMIDIONE RADICALS BY DECARBOXYLATIVE SUBSTITUTION OF α‐OXOCARBOXYLIC ACIDS BY ACYL RADICALS–II. OXALOACETIC ACID (OXOSUCCINIC ACID) * (1975) (1)
Reactivities of Diarylmethyl and Triarylmethyl Cations with Primary Amines in Aqueous Acetonitrile Solutions. The Importance of Amine Hydration. (1992) (1)
LASER FLASH PHOTOLYSIS OF SOME PHENYLAZIRIDINES (1998) (1)
248‐nm Laser Flash Photoprotonation of Mesitylene, Hexamethylbenzene, and 1,3,5‐Trimethoxybenzene in 1,1,1,3,3,3‐Hexafluoroisopropyl Alcohol. Formation and Electrophilic Reactivities of the Cyclohexadienyl Cations. (1991) (1)
Mechanisms of the Oxidation of Alkylaromatics and Aromatic Sulfides by Cytochrome P-450 and Peroxidases (1997) (1)
Pulse Radiolysis and ESR Studies of the Dehydration of Radicals from 1,2-Diols and Related Compounds. (1986) (1)
Formation of semidione radicals on production of 1,2-dihydroxyalkl radicals in the presence of peroxides in basic solution. An electron spin resonance study (1976) (1)
Kinetic isotope effect in the chemiluminescent oxidation of acridan by dibenzoylperoxide (1970) (1)
Reactivities of Triarylmethyl and Diarylmethyl Cations with Azide Ion Investigated by Laser Flash Photolysis. Diffusion‐Controlled Reactions (1991) (1)
Kinetics of the Reactions of Laser‐Flash Photolytically Generated Carbenium Ions with Alkyl and Silyl Enol Ethers. Comparison with the Reactivity Toward Alkenes, Allylsilanes and Alcohols (1992) (1)
PHOTOREACTION OF BIACETYL WITH 1,3-DIOXOLE DERIVATIVES: MODIFICATION OF THE MECHANISM OF PHOTOREACTION OF CARBONYL COMPOUNDS WITH ELECTRON-RICH OLEFINS (1984) (0)
OXIDATION OF METHOXYHYDROXYCYCLOHEXADIENYL RADICALS BY QUINONES. THE INFLUENCE OF THE ISOMERIC STRUCTURE OF THE RADICAL ON THE RATE CONSTANT FOR ELECTRO TRANSFER (1980) (0)
Kinetics and Stereochemistry of the SO·‐ 4‐Induced Hydroxylation of Cyclohexenes in Aqueous Solution (1988) (0)
Photochemistry of 2,3‐Dimethyl‐2,3‐diphenylbutane: C‐C Homolysis and Protonation‐Induced Side‐Chain Fragmentation. (1993) (0)
Pulse Radiolysis and Laser Photolysis Studies on Nucleotide Radicals. The Protonation State of the Radicals (1996) (0)
Cyclohexadienyl-Type Cationic Intermediates in the Friedel-Crafts Alkylation of Benzene Derivatives with the 9-Fluorenyl Cation - Observation by Laser Flash Photolysis. (1992) (0)
Formation of cis‐ and trans‐Semidione Radical Anions by Addition of Acyl Radicals to α‐Oxo Carboxylic Acids (1975) (0)
ON THE HYDROLYSIS OF SILVER(II), THALLIUM(II), TIN(III), AND COPPER(III) (1978) (0)
Direct Observation of β‐Fluoro‐Substituted 4‐Methoxyphenethyl Cations by Laser Flash Photolysis. (2010) (0)
Photoinduced cycloadditions and cyclizations. Mechanistic studies and synthetic applications (1996) (0)
Radiation Chemical Production and Lifetimes of Trialkoxymethyl Carbocations in Aqueous Solution. (1986) (0)
Editors' Note (2003) (0)
Reactions of Oxidizing Radicals with 4,6‐Dihydroxypyrimidines as Model Compounds for Uracil, Thymine, and Cytosine. (1987) (0)
Radical Chemistry in Crystals, Matrices and in Aqueous Solution. Redox Properties and Proton Transfer Processes. (1991) (0)
Letter: Radiation chemistry of DNA model compounds. IV. Phosphate ester cleavage in radicals derived from glycerol phosphates. (1974) (0)
[3 + 2] Cycloadditions and Protonation by Alcohols of Photochemically Generated Nitrile Ylides from 2H-Azirines. Formation and Reactivities of Azaallenium Cations. (1998) (0)
Crown Thioether Complexes of Cobalt(III): Ligand Structure and Redox Reactivity. Crystal Structure, Electrochemistry, and Kinetics of the Electron Transfer Exchange Reactions of (Co(tacn)(ttcn))Br3·3 H2O (tacn = 1,4,7-Triazacyclononan (1989) (0)
The (CF3S)2N. radical : preparation, dimerization, ESR-studies (1980) (0)
Carbenes and the O-H Bond: Spectroscopic Evidence for Protonation of Diarylcarbenes to Give Diarylcarbenium Ions. (1990) (0)
UV Spectrum of the Benzyl Cation: Generation, UV Spectra and Reactivities of Phenyl Carbenium Ions in Trifluoroethanol and Hexafluoro‐2‐propanol. (1991) (0)
Laser flash photolysis of 2H-azirines nitrile ylides and azaallenium cations (1994) (0)
Electrophilic Reactions of Xanthylium Carbocations Produced by Flash Photolysis of 9-Xanthenols. (1989) (0)
P32 08 tP – REACTION OF OH RADICAL WITH ADENINE, ITS NUCLEOSIDES, NUCLEOTIDES AND SOME ALKYLATED DERIVATIVES (1991) (0)
Photodissociation of N-(Triphenylmethyl)anilines: A Laser Flash Photolysis, ESR, and Product Analysis Study. (1998) (0)
Photoionization of Ferrocytochrome c by 248 nm Laser Light and the Observation of the Early Stages of Ferricytochrome c Unfolding in the Nanosecond‐to‐millisecond Timescale (1999) (0)
Regioselective Photoprotonation of 1,3-Dimethoxybenzenes in 1,1,1,3,3, 3-Hexafluoroisopropyl Alcohol. H-D Isotope-Exchange and Laser Flash Photolysis Studies. (1992) (0)
Photofragmentation of alpha-oxocarboxylic acids in aqueous solution. An EPR study. Formation of semidione radicals by decarboxylative substitution of alpha-oxocarboxylic acids by acyl radicals. I. Glyoxylic, pyruvic, alpha-oxobutyric, alpha-oxoglutaric and alpha-oxoisocaproic acids. (1975) (0)
Redox Reactivity of Bis(1,4,7-triazacyclononane)iron(II/III) Complexes in Alkaline Solution and Characterization of a Deprotonated Species: Amidoiron(III) vs Aminyliron(II) Ground-State Formulation. EPR, Kinetics, Pulse Radiolysis, an (1988) (0)
The Role of Solvent Dynamics in Inter- and Intramolecular Electron Exchange Reactions (1988) (0)
Lifetimes of α-Dialkoxy Carbocations Produced via Radical Cations Generated by Electron Transfer and Photoionization in Aqueous Solution. (1989) (0)
Intramolecular Electron Exchange with Solvent Participation: ESR Study of the Radical-Anion of Benzene-1,3-dicarbaldehyde in Propan-2-ol-Water Mixtures. (1987) (0)
Oxidation of Alkylaromatics and Aromatic Sulfides by Cytochrome P-450 and Peroxidases (Mechanisms) (1997) (0)
Radiation Chemical Production, Lifetimes, and Structure-Activity Relations for α-Dialkoxyalkyl Carbocations in Aqueous Solutions: Importance of Solvation for Cation Reactivity. (1988) (0)
Reactivities of 9‐Arylfluoren‐9‐yl and 1‐(4‐Dimethylaminophenyl)ethyl Cations in Water and Trifluoroethanol Studied by Laser Flash Photolysis (1993) (0)
Laser Flash Photolysis of 9-Fluorenol. Production and Reactivities of the 9-Fluorenol Radical Cation and the 9-Fluorenyl Cation. (1990) (0)
Heterolysis of o-(ɑ-Hydroxyalkyl)-4-cyanophenyl Nitrite: Simultaneous Polar & Steric Effects (1988) (0)
Radial cations of styrenes: photo and radiation chemical formation and characterization of the reactivity (1994) (0)
Laser Flash Photolysis of Aziridines. Spectroscopic and Kinetic Characterization of Azomethine Ylides. Their [3 + 2] Cyclization with Alkenes and Protonation by Water—Alcohols to Yield Iminium Ions. (1999) (0)
Observation of Cationic Intermediates in the Photolysis of 1- Phenylcyclohexene (1993) (0)
Photoionization (λ = 248 or 308 nm) of Triphenylmethyl Radical in Aqueous Solution. Formation of Triphenylmethyl Carbocation (1990) (0)
Ionization of 1,3-Dioxoles (I) and (II) in Aqueous Solution by 248 nm Laser Flash Photolysis. Characterization of the Radical Cations (1990) (0)
One Electron Oxidation of α‐Hydroxyalkyl Radicals by Substituted Nitrobenzenes via an Intermediate Adduct. Effect of Substitution on the Rates of Decomposition of the Adducts (2010) (0)

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What Schools Are Affiliated With Steen Steenken?

Steen Steenken is affiliated with the following schools:

University of Ioannina
Ruhr University Bochum
University of Würzburg