All Stories

  1. Comment on “Radical-mediated proton transfer enables hydroxyl radical formation in charge-delocalized water” by R. Zhao, Q. Zhang, N. Yang, L. Li, Z. Li and C. Cui, Chem. Sci. , 2025, <...

    Article • Chemical Science, January 2026, Royal Society of Chemistry

    Professor Willem H. Koppenol

  2. Water droplets, H2O2, electric fields, solvation, e−aq, and H2O•+

    Article • June 2025, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  3. Syntheses of peroxynitrite, product of the reaction of superoxide with nitrogen monoxide

    Article • Redox Biochemistry and Chemistry, December 2024, Elsevier

    Professor Willem H. Koppenol

  4. Was H2O2 generated before oxygenic photosynthesis?

    Article • Redox Biology, May 2024, Elsevier

    Professor Willem H. Koppenol

  5. Possible formation of trioxidocarbonate(•1−) (CO3•−) instead of hydroxyl radical (HO•) from superoxide anions (O2•−) during paraquat poisoning under physiological conditions

    Article • Legal Medicine, May 2024, Elsevier

    Professor Willem H. Koppenol

  6. Was hydrogen peroxide present before the arrival of oxygenic photosynthesis? The important role of iron(II) in the Archean ocean

    Article • Redox Biology, February 2024, Elsevier

    Professor Willem H. Koppenol

  7. A century of the Warburg effect

    Article • Nature Metabolism, November 2023, Springer Science + Business Media

    Professor Willem H. Koppenol

  8. The Warburg effect – Discovered 100 years ago

    Article • Free Radical Biology and Medicine, August 2023, Elsevier

    Professor Willem H. Koppenol

  9. Superoxide does not react with hydrogen peroxide in water.

    Article • Nature Communications, January 2022, Springer Science + Business Media

    Professor Willem H. Koppenol

  10. The reaction of hydrogen peroxide with iron(II)

    Article • Dalton Transactions, January 2022, Royal Society of Chemistry

    Professor Willem H. Koppenol

  11. Fe(I) is not involved in the Fenton reaction

    Article • Physical Chemistry Chemical Physics, January 2021, Royal Society of Chemistry

    Professor Willem H. Koppenol

  12. The yield of radicals from the reaction of ONOO- with CO2 decreases at higher CO2 concentrations

    Article • Chemical Research in Toxicology, May 2020, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  13. Superoxide does not react with hydrogen peroxide.

    Article • Free Radical Biology and Medicine, December 2019, Elsevier

    Professor Willem H. Koppenol

  14. A guide to reactions of iron

    Article • Free Radical Biology and Medicine, March 2019, Elsevier

    Professor Willem H. Koppenol

  15. The iron bolt is an award given during the Gordon Oxyradical Conference.

    Article • Free Radical Biology and Medicine, August 2018, Elsevier

    Professor Willem H. Koppenol

  16. Peroxynitrite forms very rapidly an adduct with CO2, which decays by reacting with a 2nd CO2

    Article • Chemical Research in Toxicology, July 2018, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  17. Discovery and importance of hydrogen peroxide

    Article • Nature, July 2018, Springer Science + Business Media

    Professor Willem H. Koppenol

  18. Rapid reduction of the oxyform of cytochrome P450 by a hydrated electron

    Article • Journal of Biological Chemistry, November 2017, American Society for Biochemistry & Molecular Biology (ASBMB)

    Professor Willem H. Koppenol

  19. Autoxidation of NO

    Article • Inorganic Chemistry, April 2017, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  20. Introduction for the special issue on the chemistry of redox signaling

    Article • Archives of Biochemistry and Biophysics, March 2017, Elsevier

    Professor Willem H. Koppenol

  21. Limits on the reactions of sulfur-containing biomolecules

    Article • Archives of Biochemistry and Biophysics, March 2017, Elsevier

    Professor Willem H. Koppenol

  22. Element names

    Article • January 2017, De Gruyter

    Professor Willem H. Koppenol

  23. Electrode Potentials ofl-Tryptophan,l-Tyrosine, 3-Nitro-l-tyrosine, 2,3-Difluoro-l-tyrosine, and 2,3,5-Trifluoro-l-tyrosine

    Article • Biochemistry, May 2016, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  24. The title says it all.

    Article • Pure and Applied Chemistry, April 2016, De Gruyter

    Professor Jan Reedijk, Professor Willem H. Koppenol, Professor Javier Garcia Martinez

  25. History of hydrogen peroxide

    Article • Archives of Biochemistry and Biophysics, April 2016, Elsevier

    Professor Willem H. Koppenol

  26. Primary photochemistry of peroxynitrite in aqueous solution

    Article • Chemical Physics Letters, November 2015, Elsevier

    Professor Willem H. Koppenol, Prof. Frank Jensen

  27. Superoxide-mediated post-translational modification of tyrosine residues

    Article • Free Radical Biology and Medicine, September 2015, Elsevier

    Professor Willem H. Koppenol

  28. Corrigendum to “Rapid reaction of superoxide with insulin-tyrosyl radicals to generate a hydroperoxide with subsequent glutathione addition” [Free Radic. Biol. Med. 70 (2014) 86–95]

    Article • Free Radical Biology and Medicine, May 2015, Elsevier

    Professor Willem H. Koppenol

  29. Redox Properties and Activity of Iron–Citrate Complexes: Evidence for Redox Cycling

    Article • Chemical Research in Toxicology, April 2015, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  30. Protein thiyl radical reactions and product formation: a kinetic simulation

    Article • Free Radical Biology and Medicine, March 2015, Elsevier

    Professor Willem H. Koppenol

  31. Concurrent Cooperativity and Substrate Inhibition in the Epoxidation of Carbamazepine by Cytochrome P450 3A4 Active Site Mutants Inspired by Molecular Dynamics Simulations

    Article • Biochemistry, January 2015, American Chemical Society (ACS)

    Professor Willem H. Koppenol

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

    Article • Pure and Applied Chemistry, January 2015, De Gruyter

    Dr Branko Ruscic, Professor Willem H. Koppenol

  33. CHAPTER 1. Peroxynitrite: The Basics

    Article • January 2015, Royal Society of Chemistry

    Professor Willem H. Koppenol

  34. Iron(II) binding by cereal beta-glucan

    Article • Carbohydrate Polymers, January 2015, Elsevier

    Professor Willem H. Koppenol

  35. ONOOH does not react with H2: Potential beneficial effects of H2 as an antioxidant by selective reaction with hydroxyl radicals and peroxynitrite

    Article • Free Radical Biology and Medicine, October 2014, Elsevier

    Professor Willem H. Koppenol

  36. Why Selenocysteine Replaces Cysteine in Thioredoxin Reductase: A Radical Hypothesis

    Article • Biochemistry, August 2014, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  37. Rapid reaction of superoxide with insulin-tyrosyl radicals to generate a hydroperoxide with subsequent glutathione addition

    Article • Free Radical Biology and Medicine, May 2014, Elsevier

    Professor Willem H. Koppenol

  38. The kinetics of the reaction of nitrogen dioxide with iron(II)- and iron(III) cytochrome c

    Article • Free Radical Biology and Medicine, April 2014, Elsevier

    Professor Willem H. Koppenol

  39. Intramolecular 1,2‐ and 1,3‐Hydrogen Transfer Reactions of Thiyl Radicals

    Article • Israel Journal of Chemistry, March 2014, Wiley

    Professor Willem H. Koppenol

  40. Repair of Protein Radicals by Antioxidants

    Article • Israel Journal of Chemistry, March 2014, Wiley

    Professor Willem H. Koppenol

  41. Standard electrode potentials involving radicals in aqueous solution: inorganic radicals

    Article • BioInorganic Reaction Mechanisms, December 2013, De Gruyter

    Professor Willem H. Koppenol

  42. The complex interplay of iron metabolism, reactive oxygen species, and reactive nitrogen species: Insights into the potential of various iron therapies to induce oxidative and nitrosative stress

    Article • Free Radical Biology and Medicine, December 2013, Elsevier

    Professor Willem H. Koppenol

  43. Cytochrome c and superoxide

    Article • JBIC Journal of Biological Inorganic Chemistry, July 2013, Springer Science + Business Media

    Professor Willem H. Koppenol

  44. Reactions of the tetraoxidosulfate(˙−) and hydroxyl radicals with poly(sodium α-methylstyrene sulfonate)

    Article • Physical Chemistry Chemical Physics, January 2013, Royal Society of Chemistry

    Professor Willem H. Koppenol

  45. Decomposition kinetics of peroxynitrite: influence of pH and buffer

    Article • Dalton Transactions, January 2013, Royal Society of Chemistry

    Professor Willem H. Koppenol

  46. Efficient depletion of ascorbate by amino acid and protein radicals under oxidative stress

    Article • Free Radical Biology and Medicine, October 2012, Elsevier

    Professor Willem H. Koppenol

  47. Chemical Characterization of the Smallest S -Nitrosothiol, HSNO; Cellular Cross-talk of H 2 S and S -Nitros...

    Article • Journal of the American Chemical Society, July 2012, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  48. Hydrogen Exchange Equilibria in Thiols

    Article • Chemical Research in Toxicology, July 2012, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  49. Nitrosation, Thiols, and Hemoglobin: Energetics and Kinetics

    Article • Inorganic Chemistry, May 2012, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  50. Fast repair of protein radicals by urate

    Article • Free Radical Biology and Medicine, May 2012, Elsevier

    Professor Willem H. Koppenol

  51. Reversible Hydrogen Transfer Reactions in Thiyl Radicals From Cysteine and Related Molecules: Absolute Kinetics and Equilibrium Constants Determined by Pulse Radiolysis

    Article • The Journal of Physical Chemistry, May 2012, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  52. Peroxynitrous acid: controversy and consensus surrounding an enigmatic oxidant

    Article • Dalton Transactions, January 2012, Royal Society of Chemistry

    Professor Willem H. Koppenol

  53. Kinetic Simulation of the Chemical Stabilization Mechanism in Fuel Cell Membranes Using Cerium and Manganese Redox Couples

    Article • Journal of The Electrochemical Society, January 2012, The Electrochemical Society

    Professor Willem H. Koppenol

  54. Erratum: Otto Warburg's contributions to current concepts of cancer metabolism

    Article • Nature Reviews Drug Discovery, July 2011, Springer Science + Business Media

    Professor Willem H. Koppenol

  55. Otto Warburg's contributions to current concepts of cancer metabolism

    Article • Nature Reviews Drug Discovery, April 2011, Springer Science + Business Media

    Professor Willem H. Koppenol

  56. Why do fuel cell membranes break down?

    Article • Physical Chemistry Chemical Physics, January 2011, Royal Society of Chemistry

    Professor Willem H. Koppenol

  57. Water increases rates of epoxidation by Mn(iii)porphyrins/imidazole/IO4− in CH2Cl2. Analogy with peroxidase and chlorite dismutase

    Article • Dalton Transactions, January 2011, Royal Society of Chemistry

    Professor Willem H. Koppenol

  58. Radicals in Fuel Cell Membranes: Mechanisms of Formation and Ionomer Attack

    Article • January 2011, The Electrochemical Society

    Professor Willem H. Koppenol

  59. Radical (HO●, H● and HOO●) Formation and Ionomer Degradation in Polymer Electrolyte Fuel Cells

    Article • Journal of The Electrochemical Society, January 2011, The Electrochemical Society

    Professor Willem H. Koppenol

  60. Distance-Dependent Diffusion-Controlled Reaction of •NO and O2•− at Chemical Equilibrium with ONOO−

    Article • The Journal of Physical Chemistry, November 2010, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  61. Hydrogen Exchange Equilibria in Glutathione Radicals: Rate Constants

    Article • Chemical Research in Toxicology, September 2010, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  62. Selenium and Sulfur in Exchange Reactions: A Comparative Study

    Article • The Journal of Organic Chemistry, August 2010, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  63. Electrode potentials of partially reduced oxygen species, from dioxygen to water

    Article • Free Radical Biology and Medicine, August 2010, Elsevier

    Professor Willem H. Koppenol

  64. Reduction of protein radicals by GSH and ascorbate: potential biological significance

    Article • Amino Acids, June 2010, Springer Science + Business Media

    Professor Willem H. Koppenol

  65. Why do proteins use selenocysteine instead of cysteine?

    Article • Amino Acids, May 2010, Springer Science + Business Media

    Professor Willem H. Koppenol

  66. Damage to fuel cell membranes. Reaction of HO˙ with an oligomer of poly(sodium styrene sulfonate) and subsequent reaction with O2

    Article • Physical Chemistry Chemical Physics, January 2010, Royal Society of Chemistry

    Professor Willem H. Koppenol

  67. Photon-Initiated Homolysis of Peroxynitrous Acid

    Article • Inorganic Chemistry, June 2009, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  68. Intermediates in the Autoxidation of Nitrogen Monoxide

    Article • Chemistry - A European Journal, June 2009, Wiley

    Professor Willem H. Koppenol

  69. Efficient repair of protein radicals by ascorbate

    Article • Free Radical Biology and Medicine, April 2009, Elsevier

    Professor Willem H. Koppenol

  70. Peroxynitrate is formed rapidly during decomposition of peroxynitrite at neutral pH

    Article • Dalton Transactions, January 2009, Royal Society of Chemistry

    Professor Willem H. Koppenol

  71. Preparation and Properties of Lithium and Sodium Peroxynitrite

    Article • Chemical Research in Toxicology, November 2008, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  72. Reversible Intramolecular Hydrogen Transfer between Cysteine Thiyl Radicals and Glycine and Alanine in Model Peptides: Absolute Rate Constants Derived from Pulse Radiolysis and Laser Flash Photolysis

    Article • The Journal of Physical Chemistry, October 2008, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  73. Kinetics of Tyrosyl Radical Reduction by Selenocysteine

    Article • Biochemistry, August 2008, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  74. Antioxidant Nanoreactor Based on Superoxide Dismutase Encapsulated in Superoxide-Permeable Vesicles

    Article • The Journal of Physical Chemistry, June 2008, American Chemical Society (ACS)

    Professor Willem H. Koppenol, Professor Cornelia Gabriala Palivan

  75. Homolysis of the Peroxynitrite Anion Detected with Permanganate

    Article • Inorganic Chemistry, November 2007, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  76. Two Pathways of Carbon Dioxide Catalyzed Oxidative Coupling of Phenol by Peroxynitrite

    Article • Chemical Research in Toxicology, October 2007, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  77. The glutathione thiyl radical does not react with nitrogen monoxide

    Article • Biochemical and Biophysical Research Communications, August 2007, Elsevier

    Professor Willem H. Koppenol

  78. Oxygen Activation by Cytochrome P450:  A Thermodynamic Analysis

    Article • Journal of the American Chemical Society, July 2007, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  79. Oxidation-state-dependent reactions of cytochrome c with the trioxidocarbonate(•1−) radical: a pulse radiolysis study

    Article • JBIC Journal of Biological Inorganic Chemistry, September 2006, Springer Science + Business Media

    Professor Willem H. Koppenol

  80. Fenton Chemistry and Iron Chelation under Physiologically Relevant Conditions:  Electrochemistry and Kinetics

    Article • Chemical Research in Toxicology, September 2006, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  81. Catalysis of Electron Transfer by Selenocysteine

    Article • Biochemistry, April 2006, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  82. Two Pathways of Carbon Dioxide Catalyzed Oxidative Coupling of Phenol by Peroxynitrite

    Article • Chemical Research in Toxicology, February 2006, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  83. Dissociation of CP20 from Iron(II)(cp20)3: A Pulse Radiolysis Study

    Article • European Journal of Inorganic Chemistry, January 2006, Wiley

    Professor Willem H. Koppenol

  84. The kinetics of oxidation of GSH by protein radicals

    Article • Biochemical Journal, December 2005, Portland Press Ltd.

    Professor Willem H. Koppenol

  85. Corrigendum to “Kinetics properties of Cu,Zn-superoxide dismutase as a function of metal content” [Arch. Biochem. Biophys. 439 (2005) 234–240]

    Article • Archives of Biochemistry and Biophysics, December 2005, Elsevier

    Professor Willem H. Koppenol

  86. Redox cycling of iron complexes of N-(dithiocarboxy)sarcosine and N-methyl-d-glucamine dithiocarbamate

    Article • Free Radical Biology and Medicine, December 2005, Elsevier

    Professor Willem H. Koppenol

  87. Peroxynitrite efficiently mediates the interconversion of redox intermediates of myeloperoxidase

    Article • Biochemical and Biophysical Research Communications, November 2005, Elsevier

    Professor Willem H. Koppenol

  88. Inhibition of the Fenton reaction by nitrogen monoxide

    Article • JBIC Journal of Biological Inorganic Chemistry, October 2005, Springer Science + Business Media

    Professor Willem H. Koppenol

  89. Kinetics properties of Cu,Zn-superoxide dismutase as a function of metal content

    Article • Archives of Biochemistry and Biophysics, July 2005, Elsevier

    Professor Willem H. Koppenol

  90. Chemiluminescence of Pholasin caused by peroxynitrite

    Article • Free Radical Biology and Medicine, April 2005, Elsevier

    Professor Willem H. Koppenol

  91. Peroxynitritometal complexes

    Article • Coordination Chemistry Reviews, February 2005, Elsevier

    Professor Willem H. Koppenol

  92. On the Chemical and Electrochemical One-Electron Reduction of Peroxynitrous Acid

    Article • The Journal of Physical Chemistry A, January 2005, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  93. The history of naming elements.

    Article • Helvetica Chimica Acta, January 2005, Wiley

    Professor Willem H. Koppenol

  94. Qualitative and Quantitative Determination of Nitrite and Nitrate with Ion Chromatography

    Article • January 2005, Elsevier

    Professor Willem H. Koppenol

  95. Intramolecular addition of cysteine thiyl radicals to phenylalanine in peptides: formation of cyclohexadienyl type radicals

    Article • Chemical Communications, January 2005, Royal Society of Chemistry

    Professor Willem H. Koppenol

  96. Calmodulin methionine residues are targets for one-electron oxidation by hydroxyl radicals: formation of S∴N three-electron bonded radical complexes

    Article • Chemical Communications, January 2005, Royal Society of Chemistry

    Professor Willem H. Koppenol

  97. Redox Properties of the Iron Complexes of Orally Active Iron Chelators CP20, CP502, CP509, and ICL670

    Article • Helvetica Chimica Acta, December 2004, Wiley

    Professor Willem H. Koppenol

  98. Preventing Nitrite Contamination in Tetramethylammonium Peroxynitrite Solutions

    Article • Inorganic Chemistry, September 2004, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  99. UV Photolysis of 3-Nitrotyrosine Generates Highly Oxidizing Species:  A Potential Source of Photooxidative Stress

    Article • Chemical Research in Toxicology, August 2004, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  100. Human peroxiredoxin 5 is a peroxynitrite reductase

    Article • FEBS Letters, July 2004, Wiley

    Professor Willem H. Koppenol

  101. Kinetics Evidence for a Complex between Peroxynitrous Acid and Titanium(IV)

    Article • Inorganic Chemistry, July 2004, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  102. The mechanisms of S-nitrosothiol decomposition catalyzed by iron

    Article • Nitric Oxide, March 2004, Elsevier

    Professor Willem H. Koppenol

  103. Mechanistic insight into the peroxidase catalyzed nitration of tyrosine derivatives by nitrite and hydrogen peroxide

    Article • FEBS Journal, February 2004, Wiley

    Professor Willem H. Koppenol

  104. Rapid scavenging of peroxynitrous acid by monohydroascorbate

    Article • Free Radical Biology and Medicine, December 2003, Elsevier

    Professor Willem H. Koppenol

  105. Evaluation of Activation Volumes for the Conversion of Peroxynitrous to Nitric Acid

    Article • The Journal of Physical Chemistry A, November 2003, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  106. Peroxynitrite-mediated oxidation of dichlorodihydrofluorescein and dihydrorhodamine

    Article • Free Radical Biology and Medicine, September 2003, Elsevier

    Professor Willem H. Koppenol

  107. Oxidation of Nitrite by Peroxynitrous Acid

    Article • The Journal of Physical Chemistry A, February 2003, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  108. Peroxynitrous Acid ‐ Where is the Hydroxyl Radical?

    Article • IUBMB Life, January 2003, Wiley

    Professor Willem H. Koppenol

  109. Erratum to “NO Nomenclature?” [Nitric Oxide 6 (2002), 96–98]

    Article • Nitric Oxide, November 2002, Elsevier

    Professor Willem H. Koppenol

  110. The Rate Constant of the Reaction of Superoxide with Nitrogen Monoxide:  Approaching the Diffusion Limit

    Article • The Journal of Physical Chemistry A, March 2002, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  111. The Haber-Weiss cycle—71 years later

    Article • Redox Report, February 2002, Taylor & Francis

    Professor Willem H. Koppenol

  112. NO Nomenclature?

    Article • Nitric Oxide, February 2002, Elsevier

    Professor Willem H. Koppenol

  113. Studies of metal-binding properties of Cu,Zn superoxide dismutase by isothermal titration calorimetry

    Article • January 2002, Elsevier

    Professor Willem H. Koppenol

  114. Naming of new elements(IUPAC Recommendations 2002)

    Article • Pure and Applied Chemistry, January 2002, De Gruyter

    Professor Willem H. Koppenol

  115. Product Distribution of Peroxynitrite Decay as a Function of pH, Temperature, and Concentration

    Article • Journal of the American Chemical Society, December 2001, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  116. 100 Years of peroxynitrite chemistry and 11 years of peroxynitrite biochemistry

    Article • Redox Report, December 2001, Taylor & Francis

    Professor Willem H. Koppenol

  117. Hydrolysis and Photolysis of Tris(tetraethylammonium) Pentacyanoperoxynitritocobaltate(III): Evidence for a Novel Complex, Pentacyanonitratocobaltate(III)

    Article • Helvetica Chimica Acta, October 2001, Wiley

    Professor Willem H. Koppenol

  118. Oxidation of NADH by Chloramines and Chloramides and Its Activation by Iodide and by Tertiary Amines

    Article • Archives of Biochemistry and Biophysics, September 2001, Elsevier

    Professor Willem H. Koppenol

  119. The Haber-Weiss cycle – 70 years later

    Article • Redox Report, August 2001, Taylor & Francis

    Professor Willem H. Koppenol

  120. Reaction of peroxynitrite with carbon dioxide: intermediates and determination of the yield of CO3 •– and NO2 •

    Article • JBIC Journal of Biological Inorganic Chemistry, July 2001, Springer Science + Business Media

    Professor Willem H. Koppenol

  121. On the Oxidation of Cytochrome c by Hypohalous Acids

    Article • Archives of Biochemistry and Biophysics, May 2001, Elsevier

    Professor Willem H. Koppenol

  122. Gibbs Energy of Formation of Peroxynitrite

    Article • Chemical Research in Toxicology, March 2001, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  123. Names for muonium and hydrogen atoms and their ions(IUPAC Recommendations 2001)

    Article • Pure and Applied Chemistry, January 2001, De Gruyter

    Professor Willem H. Koppenol

  124. Reactions of Peroxynitrite with Phenolic and Carbonyl Compounds: Flavonoids are not Scavengers of Peroxynitrite

    Article • Helvetica Chimica Acta, September 2000, Wiley

    Professor Willem H. Koppenol

  125. Peroxynitrite does not decompose to singlet oxygen ( 1 Δ g O 2 ) and nitroxyl (NO − )

    Article • Proceedings of the National Academy of Sciences, September 2000, Proceedings of the National Academy of Sciences

    Professor Willem H. Koppenol, Paolo Di Mascio

  126. On the Irreversible Destruction of Reduced Nicotinamide Nucleotides by Hypohalous Acids

    Article • Archives of Biochemistry and Biophysics, August 2000, Elsevier

    Professor Willem H. Koppenol

  127. The Preparation of Apo-Cu,Zn Superoxide Dismutase by Ion-Exchange Chromatography on Iminodiacetic Acid–Sepharose

    Article • Protein Expression and Purification, June 2000, Elsevier

    Professor Willem H. Koppenol

  128. The Quantitative Oxidation of Methionine to Methionine Sulfoxide by Peroxynitrite

    Article • Archives of Biochemistry and Biophysics, May 2000, Elsevier

    Professor Willem H. Koppenol

  129. Mechanism of Reaction of Myeloperoxidase with Nitrite

    Article • Journal of Biological Chemistry, April 2000, American Society for Biochemistry & Molecular Biology (ASBMB)

    Professor Willem H. Koppenol

  130. Synthesis and Characterization of Tris(tetraethylammonium) Pentacyanoperoxynitritocobaltate(III)

    Article • Helvetica Chimica Acta, April 2000, Wiley

    Professor Willem H. Koppenol

  131. Names for inorganic radicals (IUPAC Recommendations 2000)

    Article • Pure and Applied Chemistry, January 2000, De Gruyter

    Professor Willem H. Koppenol

  132. Article • Helvetica Chimica Acta, May 1999, Wiley

    Professor Willem H. Koppenol

  133. Conformation of Peroxynitrite:  Determination by Crystallographic Analysis

    Article • Chemical Research in Toxicology, March 1999, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  134. Correspondence

    Article • Free Radical Biology and Medicine, March 1999, Elsevier

    Professor Willem H. Koppenol

  135. [36] Peroxynitrite studied by stopped-flow spectroscopy

    Article • January 1999, Elsevier

    Professor Willem H. Koppenol

  136. Kinetic Study of the Reaction of Glutathione Peroxidase with Peroxynitrite

    Article • Chemical Research in Toxicology, December 1998, American Chemical Society (ACS)

    Professor Willem H. Koppenol, Dr Helmut Sies

  137. Peroxynitrite Uncloaked? Volume 11, Number 7, July 1998, pp 716−717

    Article • Chemical Research in Toxicology, November 1998, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  138. The basic chemistry of nitrogen monoxide and peroxynitrite

    Article • Free Radical Biology and Medicine, September 1998, Elsevier

    Professor Willem H. Koppenol

  139. Peroxynitrite Uncloaked?

    Article • Chemical Research in Toxicology, July 1998, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  140. The chemistry of peroxynitrite, a biological toxin

    Article • Química Nova, June 1998, FapUNIFESP (SciELO)

    Professor Willem H. Koppenol

  141. Formation and Properties of Peroxynitrite as Studied by Laser Flash Photolysis, High-Pressure Stopped-Flow Technique, and Pulse Radiolysis Volume 10, Number 11, November 1997, pp 1285−1292

    Article • Chemical Research in Toxicology, April 1998, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  142. The Reaction of Peroxynitrite with Zeaxanthin

    Article • Nitric Oxide, February 1998, Elsevier

    Professor Willem H. Koppenol

  143. Can ONOOH Undergo Homolysis?

    Article • Chemical Research in Toxicology, February 1998, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  144. Hydrogen Isotope Effect on the Isomerization of Peroxynitrous Acid

    Article • Helvetica Chimica Acta, January 1998, Wiley

    Professor Willem H. Koppenol

  145. Formation and Properties of Peroxynitrite as Studied by Laser Flash Photolysis, High-Pressure Stopped-Flow Technique, and Pulse Radiolysis

    Article • Chemical Research in Toxicology, November 1997, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  146. Kinetic study of the reaction of ebselen with peroxynitrite

    Article • FEBS Letters, December 1996, Wiley

    Professor Willem H. Koppenol, Dr Helmut Sies

  147. Nitric oxide, superoxide, and peroxynitrite: the good, the bad, and ugly

    Article • AJP Cell Physiology, November 1996, American Physiological Society

    Professor Willem H. Koppenol

  148. Reaction of peroxynitrite with L-tryptophan

    Article • Redox Report, June 1996, Taylor & Francis

    Professor Willem H. Koppenol

  149. The enthalpy of isomerization of peroxynitrite to nitrate

    Article • Thermochimica Acta, February 1996, Elsevier

    Professor Willem H. Koppenol

  150. [27] Syntheses of peroxynitrite: To go with the flow or on solid grounds?

    Article • January 1996, Elsevier

    Professor Willem H. Koppenol

  151. Nitration and Hydroxylation of Phenolic Compounds by Peroxynitrite

    Article • Chemical Research in Toxicology, January 1996, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  152. Ab Initio and NMR Study of Peroxynitrite and Peroxynitrous Acid:  Important Biological Oxidants

    Article • The Journal of Physical Chemistry, January 1996, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  153. Thermodynamics of reactions involving nitrogen-oxygen compounds

    Article • January 1996, Elsevier

    Professor Willem H. Koppenol

  154. Say NO to nitric oxide: Nomenclature for nitrogen- and oxygen-containing compounds

    Article • January 1996, Elsevier

    Professor Willem H. Koppenol

  155. [18] Nitration and hydroxylation of phenolic compounds by peroxynitrite

    Article • January 1996, Elsevier

    Professor Willem H. Koppenol

  156. A Novel Hexanuclear FeIII‐cis‐Inositolato Complex as a Model for FeIII–Polyol Interactions in Aqueous Solution

    Article • Angewandte Chemie International Edition in English, November 1995, Wiley

    Professor Willem H. Koppenol

  157. Ein neuartiger sechskerniger FeIII‐cis‐Inositolato‐Komplex als Modell für FeIII‐Polyol‐Wechselwirkungen in wäßriger Lösung

    Article • Angewandte Chemie, October 1995, Wiley

    Professor Willem H. Koppenol

  158. A practical method for preparing peroxynitrite solutions of low ionic strength and free of hydrogen peroxide

    Article • Free Radical Biology and Medicine, January 1995, Elsevier

    Professor Willem H. Koppenol, Professor Rao M Uppu

  159. The kinetics of the oxidation of l-ascorbic acid by peroxynitrite

    Article • Free Radical Biology and Medicine, January 1995, Elsevier

    Professor Willem H. Koppenol

  160. Thermodynamic considerations on the formation of reactive species from hypochlorite, superoxide and nitrogen monoxide Could nitrosyl chloride be produced by neutrophils and macrophages?

    Article • FEBS Letters, June 1994, Wiley

    Professor Willem H. Koppenol

  161. On the pH-dependent yield of hydroxyl radical products from peroxynitrite

    Article • Free Radical Biology and Medicine, March 1994, Elsevier

    Professor Willem H. Koppenol

  162. The hazard of hydroxyl radicals, a reply

    Article • Free Radical Biology and Medicine, February 1994, Elsevier

    Professor Willem H. Koppenol

  163. NO comments

    Article • Nature, January 1994, Springer Science + Business Media

    Professor Willem H. Koppenol

  164. Chemistry of iron and copper in radical reactions

    Article • January 1994, Elsevier

    Professor Willem H. Koppenol

  165. The centennial of the Fenton reaction

    Article • Free Radical Biology and Medicine, December 1993, Elsevier

    Professor Willem H. Koppenol

  166. The nitration and hydroxylation of phenol and salicylic acid by peroxynitrite

    Article • Free Radical Biology and Medicine, November 1993, Elsevier

    Professor Willem H. Koppenol

  167. ALS, SOD and peroxynitrite

    Article • Nature, August 1993, Springer Science + Business Media

    Professor Willem H. Koppenol

  168. Ferredoxin binding site on ferredoxin: NADP+ reductase

    Article • FEBS Journal, August 1993, Wiley

    Professor Willem H. Koppenol

  169. Binding of ferredoxin to ferredoxin: NADP+ oxidoreductase: The role of carboxyl groups, electrostatic surface potential, and molecular dipole moment

    Article • Protein Science, July 1993, Wiley

    Professor Willem H. Koppenol

  170. Ab initio calculations on ONOOH and ONOO?

    Article • International Journal of Quantum Chemistry, March 1993, Wiley

    Professor Willem H. Koppenol

  171. A thermodynamic appraisal of the radical sink hypothesis

    Article • Free Radical Biology and Medicine, January 1993, Elsevier

    Professor Willem H. Koppenol

  172. Peroxynitrite, a cloaked oxidant formed by nitric oxide and superoxide

    Article • Chemical Research in Toxicology, November 1992, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  173. The quality of nutrition letters in free radical biology & medicine: A reply

    Article • Free Radical Biology and Medicine, October 1992, Elsevier

    Professor Willem H. Koppenol

  174. A small point

    Article • Free Radical Biology and Medicine, August 1992, Elsevier

    Professor Willem H. Koppenol

  175. The hydroxylation of tryptophan

    Article • Archives of Biochemistry and Biophysics, August 1992, Elsevier

    Professor Willem H. Koppenol

  176. The hydroxylation of phenylalanine and tyrosine: A comparison with salicylate and tryptophan

    Article • Archives of Biochemistry and Biophysics, August 1992, Elsevier

    Professor Willem H. Koppenol

  177. Spirohydantoin inhibitors of aldose reductase inhibit iron- and copper-catalysed ascorbate oxidation in vitro

    Article • Biochemical Pharmacology, August 1991, Elsevier

    Professor Willem H. Koppenol

  178. The superoxide dismutase activities of two higher-valent manganese complexes, MnIV desferrioxamine and MnIII cyclam

    Article • Archives of Biochemistry and Biophysics, August 1991, Elsevier

    Professor Willem H. Koppenol

  179. Reactions of Fe(II)‐ATP and Fe(II)‐citrate complexes with t‐butyl hydroperoxide and cumyl hydroperoxide

    Article • FEBS Letters, March 1991, Wiley

    Professor Willem H. Koppenol

  180. TRANSITION METALS IN OXIDATIVE STRESS: AN OVERVIEW

    Article • January 1991, Elsevier

    Professor Willem H. Koppenol

  181. CATALYSIS OF OXYRADICAL REACTIONS BY IRON COMPLEXES

    Article • January 1991, Elsevier

    Professor Willem H. Koppenol

  182. Oxyradicals and multivitamin tablets

    Article • Free Radical Biology and Medicine, January 1991, Elsevier

    Professor Willem H. Koppenol

  183. Thermodynamic considerations on the generation of hydroxyl radicals from nitrous oxide—No laughing matter

    Article • Free Radical Biology and Medicine, January 1991, Elsevier

    Professor Willem H. Koppenol

  184. Reactions of Fe(II)‐ATP and Fe(II)‐citrate complexes with t‐butyl hydroperoxide and cumyl hydroperoxide

    Article • FEBS Letters, November 1990, Wiley

    Professor Willem H. Koppenol

  185. Oxyradical reactions: from bond‐dissociation energies to reduction potentials

    Article • FEBS Letters, May 1990, Wiley

    Professor Willem H. Koppenol

  186. Reactions of iron(II) nucleotide complexes with hydrogen peroxide

    Article • FEBS Letters, February 1990, Wiley

    Professor Willem H. Koppenol

  187. What is in a name? Rules for radicals

    Article • Free Radical Biology and Medicine, January 1990, Elsevier

    Professor Willem H. Koppenol

  188. Catalysis of oxyradical reactions by iron

    Article • Free Radical Biology and Medicine, January 1990, Elsevier

    Professor Willem H. Koppenol

  189. [12] Distinction between hydroxyl radical and ferryl species

    Article • January 1990, Elsevier

    Professor Willem H. Koppenol

  190. The hydroxylation of the salicylate anion by a fenton reaction and Γ-radiolysis: A consideration of the respective mechanisms

    Article • Free Radical Biology and Medicine, January 1990, Elsevier

    Professor Willem H. Koppenol

  191. Electron affinity of chlorine dioxide

    Article • The Journal of Physical Chemistry, December 1989, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  192. Hormesis

    Article • Science, October 1989, American Association for the Advancement of Science

    Professor Willem H. Koppenol

  193. Electrostatic interactions of 4-carboxy-2,6-dinitrophenyllysine-modified cytochromes c with physiological and non-physiological redox partners

    Article • Biochimica et Biophysica Acta (BBA) - Bioenergetics, November 1988, Elsevier

    Professor Willem H. Koppenol

  194. The electron-transfer site of spinach plastocyanin

    Article • Biochemistry, August 1988, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  195. Reactions of iron(II) nitrilotriacetate and iron(II) ethylenediamine-N,N'-diacetate complexes with hydrogen peroxide

    Article • Journal of the American Chemical Society, July 1988, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  196. Thermodynamics of reactions involving oxyradicals and hydrogen peroxide

    Article • Bioelectrochemistry and Bioenergetics, December 1987, Elsevier

    Professor Willem H. Koppenol

  197. Reduction potential of the carbon dioxide/carbon dioxide radical anion: a comparison with other C1 radicals

    Article • The Journal of Physical Chemistry, July 1987, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  198. Effect of a dipole moment on the ionic strength dependence of electron-transfer reactions of cytochrome c

    Article • Journal of the American Chemical Society, April 1987, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  199. The reaction between ferrous polyaminocarboxylate complexes and hydrogen peroxide: An investigation of the reaction intermediates by stopped flow spectrophotometry

    Article • Journal of Inorganic Biochemistry, March 1987, Elsevier

    Professor Willem H. Koppenol

  200. Effects of γ-irradiation on Isolated Rat Liver Mitochondria

    Article • International Journal of Radiation Biology and Related Studies in Physics Chemistry and Medicine, January 1987, Taylor & Francis

    Professor Willem H. Koppenol

  201. In vitro damage to rat lens by xanthine-xanthine oxidase: Protection by ascorbate

    Article • Experimental Eye Research, December 1986, Elsevier

    Professor Willem H. Koppenol

  202. Catalysis of superoxide dismutation by manganese aminopolycarboxylate complexes

    Article • Archives of Biochemistry and Biophysics, December 1986, Elsevier

    Professor Willem H. Koppenol

  203. Energetics of interconversion reactions of oxyradicals

    Article • Advances in Free Radical Biology & Medicine, January 1985, Elsevier

    Professor Willem H. Koppenol

  204. The reaction of ferrous EDTA with hydrogen peroxide: Evidence against hydroxyl radical formation

    Article • Journal of Free Radicals in Biology & Medicine, January 1985, Elsevier

    Professor Willem H. Koppenol

  205. The Radiation Chemistry of Cytochrome c

    Article • Israel Journal of Chemistry, January 1984, Wiley

    Professor Willem H. Koppenol

  206. The oxidizing nature of the hydroxyl radical. A comparison with the ferryl ion (FeO2+)

    Article • The Journal of Physical Chemistry, January 1984, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  207. Is cytochrome c reactivity determined by dipole moment or by local charges?

    Article • Biophysical Chemistry, October 1983, Elsevier

    Professor Willem H. Koppenol

  208. CHEMIOSMOTIC ATPase MECHANISMS

    Article • Annals of the New York Academy of Sciences, December 1982, Wiley

    Professor Willem H. Koppenol

  209. The reduction potential of the couple O3/O·−3

    Article • FEBS Letters, April 1982, Wiley

    Professor Willem H. Koppenol

  210. The Relation between the Dipole Moment of Cytochrome c and the Activity with Cytochrome c Reductase and Cytochrome c Oxidase

    Article • January 1982, Elsevier

    Professor Willem H. Koppenol

  211. Basic issues in binding

    Article • Trends in Biochemical Sciences, January 1981, Elsevier

    Professor Willem H. Koppenol

  212. Use of singly modified cytochrome c derivatives to determine the site for electron transfer in reactions with inorganic complexes

    Article • Journal of the American Chemical Society, January 1981, American Chemical Society (ACS)

    Professor Willem H. Koppenol

  213. Effect of a molecular dipole on the ionic strength dependence of a biomolecular rate constant. Identification of the site of reaction

    Article • Biophysical Journal, March 1980, Elsevier

    Professor Willem H. Koppenol

  214. THE HABER‐WEISS CYCLE

    Article • Photochemistry and Photobiology, October 1978, Wiley

    Professor Willem H. Koppenol

  215. The electric potential field around cytochrome c and the effect of ionic strength on reaction rates of horse cytochrome c

    Article • Biochimica et Biophysica Acta (BBA) - Bioenergetics, September 1978, Elsevier

    Professor Willem H. Koppenol

  216. A tunnelling model to explain the reduction of ferricytochrome c by H and OH radicals

    Article • Biochimica et Biophysica Acta (BBA) - Bioenergetics, July 1978, Elsevier

    Professor Willem H. Koppenol

  217. EFFECTS OF ANIONS ON THE REACTION BETWEEN CYTOCHROME c AND CYTOCHROME c OXIDASE

    Article • January 1978, Elsevier

    Professor Willem H. Koppenol

  218. Mechanism of reactions involving singlet oxygen and the superoxide anion

    Article • FEBS Letters, November 1977, Wiley

    Professor Willem H. Koppenol

  219. Mechanism of the reaction of hydrated electrons with ferrocytochrome c

    Article • Biochimica et Biophysica Acta (BBA) - Bioenergetics, February 1977, Elsevier

    Professor Willem H. Koppenol

  220. Erratum

    Article • Nature, November 1976, Nature

    Professor Willem H. Koppenol

  221. The kinetics of the reduction of cytochrome c by the superoxide anion radical

    Article • Biochimica et Biophysica Acta (BBA) - Bioenergetics, November 1976, Elsevier

    Professor Willem H. Koppenol

  222. Reactions involving singlet oxygen and the superoxide anion

    Article • Nature, July 1976, Springer Science + Business Media

    Professor Willem H. Koppenol