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1

Flavonoids as Antioxidants

Simic, Michael G., Jovanovic, Slobodan V., Steenken, Steen, Tosic, Mihajlo, Marjanovic, Budimir

Journal:

Journal of the American Chemical Society

Year:

1994

Language:

english

File:

PDF, 746 KB

english, 1994

2

Reduction potentials of flavonoid and model phenoxyl radicals. Which ring in flavonoids is responsible for antioxidant activity?

Jovanovic, Slobodan V., Steenken, Steen, Hara, Yukihiko, Simic, Michael G.

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1996

Language:

english

File:

PDF, 967 KB

english, 1996

3

How Easily Oxidizable Is DNA? One-Electron Reduction Potentials of Adenosine and Guanosine Radicals in Aqueous Solution

Steenken, Steen, Jovanovic, Slobodan V.

Journal:

Journal of the American Chemical Society

Year:

1997

Language:

english

File:

PDF, 198 KB

english, 1997

4

Base-Catalyzed C−H Deprotonation of 4-Methoxybenzyl Alcohol Radical Cations in Water: Evidence for a Carbon-to-Oxygen 1,2-H-Shift Mechanism

Baciocchi, Enrico, Bietti, Massimo, Steenken, Steen

Journal:

Journal of the American Chemical Society

Year:

1997

Language:

english

File:

PDF, 110 KB

english, 1997

5

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 -

Baciocchi, Enrico, Bietti, Massimo, Lanzalunga, Osvaldo, Steenken, Steen

Journal:

Journal of the American Chemical Society

Year:

1998

Language:

english

File:

PDF, 57 KB

english, 1998

6

Side-Chain Fragmentation of Arylalkanol Radical Cations. Carbon−Carbon and Carbon−Hydrogen Bond Cleavage and the Role of α- and β-OH Groups

Baciocchi, Enrico, Bietti, Massimo, Putignani, Lorenza, Steenken, Steen

Journal:

Journal of the American Chemical Society

Year:

1996

Language:

english

File:

PDF, 199 KB

english, 1996

7

One-electron reduction potentials of 5-indoxyl radicals: a pulse radiolysis and laser photolysis study

Jovanovic, Slobodan V., Steenken, Steen., Simic, Michael G.

Journal:

Journal of Physical Chemistry

Year:

1990

Language:

english

File:

PDF, 704 KB

english, 1990

8

Standard electrode potentials involving radicals in aqueous solution: inorganic radicals (IUPAC Technical Report)

Armstrong, David A., Huie, Robert E., Koppenol, Willem H., Lymar, Sergei V., Merényi, Gábor, Neta, Pedatsur, Ruscic, Branko, Stanbury, David M., Steenken, Steen, Wardman, Peter

Journal:

Pure & Applied Chemistry

Year:

2015

Language:

english

File:

PDF, 1.12 MB

english, 2015

9

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)

Joaquim L. Faria, Robert A. McClelland, Steen Steenken

Journal:

Chemistry - A European Journal

Year:

1998

Language:

english

File:

PDF, 137 KB

english, 1998

10

Kinetic and Product Studies on the Side-Chain Fragmentation of 1-Arylalkanol Radical Cations in Aqueous Solution: Oxygen versus Carbon Acidity

Enrico Baciocchi, Massimo Bietti, Steen Steenken

Journal:

Chemistry - A European Journal

Year:

1999

Language:

english

File:

PDF, 176 KB

english, 1999

11

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).

Luis P. Candeias, Steen Steenken

Journal:

Chemistry - A European Journal

Year:

2000

Language:

english

File:

PDF, 189 KB

english, 2000

12

Wasserunterstützter intramolekularer Elektronentransfer vom Ring zur Seitenkette in N,N,N′,N′-Tetraalkyl-p-phenylendiamin-Radikalen – Umkehrung der Seitenketten-Deprotonierung von Radikalkationen

Steen Steenken, Abel J. S. C. Vieira

Journal:

Angewandte Chemie

Year:

2001

Language:

german

File:

PDF, 87 KB

german, 2001

13

Structural Effects on the OH−-Promoted Fragmentation of Methoxy-Substituted 1-Arylalkanol Radical Cations in Aqueous Solution: The Role of Oxygen Acidity

Enrico Baciocchi, Massimo Bietti, Maria Francesca Gerini, Laura Manduchi, Michela Salamone, Steen Steenken

Journal:

Chemistry - A European Journal

Year:

2001

Language:

english

File:

PDF, 159 KB

english, 2001

14

Solvent-Dependent C−OH Homolysis and Heterolysis in Electronically Excited 9-Fluorenol: The Life and Solvation Time of the 9-Fluorenyl Cation in Water

Gagik G. Gurzadyan, Steen Steenken

Journal:

Chemistry - A European Journal

Year:

2001

Language:

english

File:

PDF, 160 KB

english, 2001

15

Is “Frank” DNA-Strand Breakage via the Guanine Radical Thermodynamically and Sterically Possible?

Steen Steenken, Slobodan V. Jovanovic, Luis P. Candeias, Johannes Reynisson

Journal:

Chemistry - A European Journal

Year:

2001

Language:

english

File:

PDF, 104 KB

english, 2001

16

Photo- and Radiation-Chemical Formation and Electrophilic and Electron Transfer Reactivities of Enolether Radical Cations in Aqueous Solution

Klaus Bernhard, Judith Geimer, Moises Canle-Lopez, Johannes Reynisson, Dieter Beckert, Rolf Gleiter, Steen Steenken

Journal:

Chemistry - A European Journal

Year:

2001

Language:

english

File:

PDF, 200 KB

english, 2001

17

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

Steen Steenken, Abel J. S. C. Vieira

Journal:

Angewandte Chemie International Edition

Year:

2001

Language:

english

File:

PDF, 87 KB

english, 2001

18

Bildung von cis- und trans-Semidionradikalanionen durch Addition von Acylradikalen an α-Oxocarbonsäuren

Dr. Steen Steenken, Prof. Dr. Dietrich Schulte-Frohlinde

Journal:

Angewandte Chemie

Year:

1975

Language:

german

File:

PDF, 237 KB

german, 1975

19

Bildung von Radikalkationen aus 1,2- und 1,4-Dimethoxybenzol durch Elektronenübertragung auf Tl2+ und Ag2+ in wäßriger Lösung. Eine Pulsradiolyse- und in-si-tu-Radiolyse-EPR-Studie

Dr. Peter O'Neill, Dr. Steen Steenken, Prof. Dr. Dietrich Schulte-Frohlinde

Journal:

Angewandte Chemie

Year:

1975

Language:

german

File:

PDF, 229 KB

german, 1975

20

Photoreaktion von Biacetyl mit 1,3-Dioxol-Derivaten: Modifizierung des Mechanismus der Photoreaktion von Carbonylverbindungen mit elektronenreichen Olefinen

Dr. Jochen Mattay, Joachim Gersdorf, Dr. Hans Leismann, Dr. Steen Steenken

Journal:

Angewandte Chemie

Year:

1984

Language:

german

File:

PDF, 208 KB

german, 1984

21

Kinetik und Stereochemie der SO-induzierten Hydroxylierung von Cyclohexenen in wäßriger Lösung

Dr. Günther Koltzenburg, Eugenie Bastian, Dr. Steen Steenken

Journal:

Angewandte Chemie

Year:

1988

Language:

german

File:

PDF, 298 KB

german, 1988

22

Erzeugung, UV-VIS/Spektren und Reaktivitäten von Phenylcarbenium-Ionen in Trifluorethanol und Hexafluor-2-propanol, zum UV-Spektrum des Benzyl-Kations

Prof. Dr. Robert A. McClelland, Christopher Chan, Frances Cozens, Dr. Agnieska Modro, Prof. Dr. Steen Steenken

Journal:

Angewandte Chemie

Year:

1991

File:

PDF, 356 KB

1991

23

Carbokationen vom Cyclohexadienyl-Typ bei der Friedel-Crafts-Alkylierung von Benzolderivaten durch das 9-Fluorenyl-Kation — eine Laserblitz-photolyse-Studie

Frances Cozens, Jianhui Li, Prof. Dr. Robert A. McClelland, Prof. Dr. Steen Steenken

Journal:

Angewandte Chemie

Year:

1992

Language:

german

File:

PDF, 399 KB

german, 1992

24

Gemeinsame Ursache enthalpischer und entropischer Substituenteneffekte bei Reaktionen von Benzhydryl-Kationen mit Nucleophilen

Dr. Matthias Patz, Prof. Dr. Herbert Mayr, Dr. Jörg Bartl, Prof. Dr. Steen Steenken

Journal:

Angewandte Chemie

Year:

1995

Language:

german

File:

PDF, 401 KB

german, 1995

25

Bildung eines heterocyclischen 1,3-Cyclopentandiyl-Radikalkations durch chemisch induzierten Elektronentransfer und Pulsradiolyse

Prof. Dr. Waldemar Adam, Thomas Kammel, Prof. Dr. Steen Steenken

Journal:

Angewandte Chemie

Year:

1996

File:

PDF, 364 KB

1996

26

Formation of cis- and trans-Semidione Radical Anions by Addition of Acyl Radicals to α-Oxo Carboxylic Acids

Dr. Steen Steenken, Prof. Dr. Dietrich Schulte-Frohlinde

Journal:

Angewandte Chemie International Edition

Year:

1975

Language:

english

File:

PDF, 225 KB

english, 1975

27

Formation of Radical Cations from 1,2- and 1,4-Dimethoxybenzene by Electron Transfer to TI2+ and Ag2+ in Aqueous Solution

Dr. Peter O'Neill, Dr. Steen Steenken, Prof. Dr. Dietrich Schulte-Frohlinde

Journal:

Angewandte Chemie International Edition

Year:

1975

Language:

english

File:

PDF, 218 KB

english, 1975

28

Photoreaction of Biacetyl and 1,3-Dioxole Derivatives: Modification of the Mechanism of the Photoreaction of Carbonyl Compounds with Electron-Rich Olefins

Dr. Jochen Mattay, Dipl.-Chem. Joachim Gersdorf, Dr. Hans Leismann, Dr. Steen Steenken

Journal:

Angewandte Chemie International Edition

Year:

1984

Language:

english

File:

PDF, 212 KB

english, 1984

29

Kinetic and Stereochemistry of the SO-Induced Hydroxylation of Cyclohexenes in Aqueous Solution

Dr. Günther Koltzenburg, Eugenie Bastian, Dr. Steen Steenken

Journal:

Angewandte Chemie International Edition

Year:

1988

Language:

english

File:

PDF, 227 KB

english, 1988

30

Laser Flash Photolysis Generation, Spectra, and Lifetimes of Phenylcarbenium Ions in Trifluoroethanol and Hexafluoroisopropyl Alcohol. On the UV Spectrum of the Benzyl Cation

Prof. Dr. Robert A. McClelland, Christopher Chan, Frances Cozens, Dr. Agnieszka Modro, Prof. Dr. Steen Steenken

Journal:

Angewandte Chemie International Edition

Year:

1991

Language:

english

File:

PDF, 380 KB

english, 1991

31

Cyclohexadienyl-Type Cationic Intermediates in the Friedel–Crafts Alkylation of Benzene Derivatives with the 9-Fluorenyl Cation—Observation by Laser Flash Photolysis

Frances Cozens, Jianhui Li, Prof. Dr. Robert A. McClelland, Prof. Dr. Steen Steenken

Journal:

Angewandte Chemie International Edition

Year:

1992

Language:

english

File:

PDF, 397 KB

english, 1992

32

Common Origin of Enthalpic and Entropic Substituent Effects in Reactions of Benzhydryl Cations with Nucleophiles

Dr. Matthias Patz, Prof. Dr. Herbert Mayr, Dr. Jörg Bartl, Prof. Dr. Steen Steenken

Journal:

Angewandte Chemie International Edition

Year:

1995

Language:

english

File:

PDF, 354 KB

english, 1995

33

Generation of a Heterocyclic 1,3-Cyclopentanediyl Radical Cation by Chemically Induced Electron Transfer Oxidation and Pulse Radiolysis

Prof. Dr. Waldemar Adam, Dipl.-Chem. Thomas Kammel, Prof. Dr. Steen Steenken

Journal:

Angewandte Chemie International Edition

Year:

1996

Language:

english

File:

PDF, 395 KB

english, 1996

34

Phenoxyl Radical Complexes of Gallium, Scandium, Iron and Manganese

Britta Adam, Eckhard Bill, Eberhard Bothe, Beatrix Goerdt, Gabriele Haselhorst, Knut Hildenbrand, Achim Sokolowski, Steen Steenken, Thomas Weyhermüller, Karl Wieghardt

Journal:

Chemistry - A European Journal

Year:

1997

Language:

english

File:

PDF, 1.29 MB

english, 1997

35

Radical Cations of Phenyl-Substituted Aziridines: What Are the Conditions for Ring Opening?

Carsten Gaebert, Jochen Mattay, Marion Toubartz, Steen Steenken, Beat Müller, Thomas Bally

Journal:

Chemistry - A European Journal

Year:

2005

Language:

english

File:

PDF, 199 KB

english, 2005

36

ChemInform Abstract: 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.

Carsten Gaebert, Christian Siegner, Jochen Mattay, Marion Toubartz, Steen Steenken

Journal:

Year:

1999

File:

PDF, 30 KB

1999

37

ChemInform Abstract: Production of Carbenium Ions from Carbenes by Protonation

Journal:

Year:

1999

File:

PDF, 23 KB

1999

38

Electron Transfer in Radicals

Massimo Bietti, Steen Steenken

Journal:

Year:

2002

File:

PDF, 22 KB

2002

39

Mechanisms of Direct and TiO2-Photocatalysed UV Degradation of Phenylurea Herbicides

Moisés Canle López, M. Isabel Fernández, Santiago Rodríguez, J. Arturo Santaballa, Steen Steenken, Emmanuelle Vulliet

Journal:

Year:

2005

Language:

english

File:

PDF, 237 KB

english, 2005

40

Photolyse von Benzoinalkyläthern in sauerstofffreien Lösungen

Sieghard Adam, Hans Güsten, Steen Steenken, Dietrich Schulte-Frohlinde

Journal:

European Journal of Organic Chemistry

Year:

1974

File:

PDF, 645 KB

1974

41

Laser flash photolysis observation of the 1-p-methoxyphenylvlnyl cation by photoprotonation of p-methoxyphenylacetylene. Comparison with the 1-p-methoxyphenethyl cation.

Robert A. McClelland, Frances Cozens, Steen Steenken

Journal:

Tetrahedron Letters

Year:

1990

Language:

english

File:

PDF, 254 KB

english, 1990

42

Flash photolysis observation and lifetimes of the cation intermediates in the intramolecular photoprotonation of tryptamine, tryptophan and their N-methyl derivatives

Frances Cozens, Robert A. McClelland, Steen Steenken

Journal:

Tetrahedron Letters

Year:

1992

Language:

english

File:

PDF, 278 KB

english, 1992

43

Photochemistry of 3H-indazoles in protic media. Benzyl cations via protonation of 2-methylene-3,5-cyclohexadienylidenes

Olaf C Fehr, Olaf Grapenthin, Jörg Kilian, Wolfgang Kirmse, Steen Steenken

Journal:

Tetrahedron Letters

Year:

1995

Language:

english

File:

PDF, 194 KB

english, 1995

44

Biphotonic generation of carbenes and carbocations by laser flash photolysis

Wolfgang Kirmse, Birgit Krzossa, Steen Steenken

Journal:

Tetrahedron Letters

Year:

1996

Language:

english

File:

PDF, 203 KB

english, 1996

45

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

Elke Anklam, Steen Steenken

Journal:

Journal of Photochemistry and Photobiology A: Chemistry

Year:

1988

Language:

english

File:

PDF, 207 KB

english, 1988

46

The calculated base pairing energy of 8-oxoguanine in the syn–anti conformation with cytosine, thymine, adenine and guanine

Jóhannes Reynisson, Steen Steenken

Journal:

Journal of Molecular Structure: THEOCHEM

Year:

2005

Language:

english

File:

PDF, 173 KB

english, 2005

47

−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

Enrico Baciocchi, Massimo Bietti, Gianfranco Ercolani, Steen Steenken

Journal:

Year:

2003

Language:

english

File:

PDF, 148 KB

english, 2003

48

Kinetic isotope effect in the chemiluminescent oxidation of acridan by dibenzoylperoxide

Journal:

Tetrahedron Letters

Year:

1970

Language:

english

File:

PDF, 221 KB

english, 1970

49

The complexation energy of the one-electron oxidized guanine–cytosine base pair and its parent system with small cations. A DFT-study

Jóhannes Reynisson, Steen Steenken

Journal:

Journal of Molecular Structure: THEOCHEM

Year:

2003

Language:

english

File:

PDF, 125 KB

english, 2003

50

Styrene triplets: Absorption spectra, lifetimes and quantum yields

Ortwin Brede, Frank David, Steen Steenken

Journal:

Journal of Photochemistry and Photobiology A: Chemistry

Year:

1996

Language:

english

File:

PDF, 426 KB

english, 1996