Centre of Radiation Research and Technology

Pawel B. Wisniowski, Gordon L. Hug, Dariusz Pogocki, Krzysztof Bobrowski "Efficient a-(Alkylthio)alkyl-Type Radical Formation in • OH-Induced Oxidation of a-(Methylthio)acetamide" J. Phys. Chem. A 2010, 114, 105–116 abstract...

(Papers accepted)

P. Filipiak, G. L. Hug, K. Bobrowski, M. Pietrzak, J. Pączkowski, B. Marciniak “Formation of cation – radical anion pairs derived from carboxybenzophenone – tetrabutylammonim salts.Pulse radiolysis studies” Res. Chem. Interm. 2009

G. L. Hug, K. Bobrowski, D. Pogocki, B. Marciniak, C. Schöneich, G. Hörner “Free-radicals in cyclic dipeptides containing Methionine. Factor analysis of transient spectra” Res. Chem. Interm. 2009

J. De la Fuente, G. Kciuk, E. Sobarzo-Sanchez, K. Bobrowski “Transient phenomena in the pulse radiolysis of oxoisoaporphine derivatives in acetonitrile” J. Phys. Chem. A 2008, 112, 10168

S. Atrian, K. Bobrowski, M. Capdevilla, C. Chatgilialoglu, C. Ferreri, C. Houee-Levin, A. M. Salzano, A. Scaloni, A. Torregiani “Biomimetic chemistry on tandem protein/lipid damages under reductive radi cal stress” Chimia 2008, 62, 721

K. Bobrowski, C. Houée-Levin, B. Marciniak “Stabilization and reactions of sulfur radical cations: relevance to one-electron oxidation of Methionine in peptides and proteins” Chimia 2008, 62, 728

G. Wenska, P. Filipiak, K.-D. Asmus, K. Bobrowski, J. Koput, B. Marciniak “Formation of a sandwich-structure assisted, relatively long-lived sulfur-centered three-electron bonded radical anion in the reduction of a bis-(1-substituted-uracilyl) disulfide in aqueous solution” J. Phys. Chem. B 2008, 112, 10045-10053

J. Bergès, A. Scemama, N. Varmenot, Z. Abedinzadeh, K. Bobrowski „Energies, stability and structure properties of radicals derived from organic sulfides containing an acetyl group after the •OH attack containing an acetyl group: ab initio and DFT calculations vs. experiment” to J. Phys. Chem. A 2008, 112, 7015-7026

G. L. Hug, K. Bobrowski, D. Pogocki, G. Hörner, B. Marciniak „Conformational influence on the type of stabilization of sulfide radical cations in cyclic peptides” ChemPhysChem 2007, 8, 2202-2210

K. Bobrowski, G. L. Hug, D. Pogocki, B. Marciniak, C. Schöneich „Stabilization of sulfide radical cations through complexation with the peptide bond: mechanisms relevant to oxidation of proteins containing multiple methionine residues” J. Phys. Chem. B. 2007, 111, 9608

K. Bobrowski, G. L. Hug, D. Pogocki, B. Marciniak, Ch. Schöneich ”Sulfur-radical cation-peptide bond complex in the one-electron oxidation of S-alkylglutathiones” J. Am. Chem. Soc. 2007, 129, 9236

O. Mozziconacci, J. Mirkowski, F. Rusconi, P. Pernot, K. Bobrowski, Ch. Houée-Levin „Superoxide ions protect enkephalin from oxidation if the amine group is blocked” Free Rad. Biol. Med. 2007, 43, 229.

O. Mozziconacci, K. Bobrowski, C. Ferreri, Ch. Chatgilialoglu “Reactions of hydrgen atom with Met-enkephalin and related peptides” Chem. Eur. J. 2007, 13, 2029.

G. Strzelczak, J. Bergès, Ch. Houée-Levin, D. Pogocki, K. Bobrowski „EPR spectroscopy and theoretical study of g-irradiated polycrystalline asparagine and aspartic acid” Biophys. Chem. 2007, 125, 92.

K.-D. Asmus, G. L. Hug, K. Bobrowski, Q.G. Mulazzani, B. Marciniak „Transients in the oxidative and reductive degradation of 1,3,5-trithiane. Time-resolved studies in aqueous solution” J. Phys. Chem. A. 2006, 110, 9292.

K. Bobrowski “Free radicals in chemistry, biology and medicine: contribution of radiation chemistry” Nukleonika 2005, 50, S67.

Pawel Wisniowski, Krzysztof Bobrowski, Piotr Filipiak, Ian Carmichael, and Gordon L. Hug “Reactions of hydrogen atoms with a-(alkylthio) carbonyl compounds. Time-resolved ESR detection and DFT calculations”, Res. Chem. Intermed., (2005).

P. Neta, J, Grodkowski, "Rate Constants for Reactions of Phenoxyl Radicals in Solution", J. Phys. Chem. Ref. Data, Vol. 34, No. 1, (2005), 109 -199

Jan Grodkowski, Małgorzata Nyga, Jacek Mirkowski, "Formation of Br₂^•-, BrSCN^•- and (SCN)₂^•- intermediates in the ionic liquid methyltributylammonium bis[(trifluoromethyl)sulfonyl]imide. Pulse radiolysis study", NUKLEONIKA (2005);50 (Supplement 2):S35-S38

P. Filipiak, G. L. Hug, K. Bobrowski, B. Marciniak “Direct photochemistry of 4-(methylthio)phenylacetic acid. Steady-state and laser flash photolysis studies” J. Photochem. Photobiol. A. (2005); available online at www.scientistdirect.com

G. Strzelczak, A. Korzeniowska-Sobczuk, K. Bobrowski "Electron spin resonance study of radiation-induced radicals in polycrystalline aromatic carboxylic acids containing thioether group” Radiat. Phys. Chem., 72, 135, (2005).

P. Filipiak, G. L. Hug, I. Carmichael, A. Korzeniowska-Sobczuk, K. Bobrowski, B. Marciniak „Lifetimes and modes of dechy of sulfur-centered radical zwitterions containing carboxylate and phenyl groups” J. Phys. Chem. A., 108, 6503, (2004).

P. Wisniowski, K. Bobrowski, I. Carmichael, and G. L. Hug “Bimolecular homolytic substitution (SH2) reaction with hydrogen atoms. Time-resolved ESR detection in the pulse radiolysis of a-(methylthio)acetamide”, J. Am. Chem. Soc. , 126, 14468-14474, (2004)

P. Popov, N. Getoff, J. Grodkowski, Z. Zimek, A.G. Chmielewski "Steady-state radiolysis and product analysis of aqueous diphenyloxide in the presence of air and N₂O" Rad. Phys. Chem. 69, 39–44, (2004)

N. Varmenot, J. Berges, Z. Abedinzadeh, A. Scemama, G. Strzelczak, K. Bobrowski “Spectral, kinetics, and theoretical studies of sulfur-centered reactive intermediates derived from thioethers containing an acetyl group” J. Phys. Chem. A., 108, 6331, (2004)

J. Grodkowski, J. Mirkowski, M. Płusa, N. Getoff, P. Popov "Pulse radiolysis of aqueous diphenyloxide" Rad. Phys. Chem. 69, 379 – 386, (2004)

J. Grodkowski, P. Neta, J. F. Wishart "Pulse radiolysis study of the reactions of hydrogen atoms in the ionic liquid methyltributylammonium Bis[(trifluoromethyl)sulfonyl]imide" J. Phys. Chem. A, 107, 9794-9799, (2003)

Ch. Schöneich, D. Pogocki, G. L. Hug, K. Bobrowski „Free radical reactions of methionine in peptides: mechanism relevant to b-amyloid oxidation and Alzheimer’s disease” J. Am. Chem. Soc., 125, 13700, (2003)

P. Neta, D. Behar, J. Grodkowski "Pulse radiolysis studies of reaction kinetics in ionic liquids in ACS Symposium Series", "Ionic Liquids as Green Solvents: Progress and Prospects" R.D. Rogers and K. R. Seddon (eds), ACS Symposium Series, vol. 856, Chapter 32, pp 397- 409, (2003)

P. B. Wisniowski, I. Carmichael, R. W. Fessenden, and G. L. Hug "Evidence for b-Scission in the Oxidation of Amino Acids", J. Phys. Chem. A, 106, 4573-4580, (2002)

D. Pogocki, Ch. Schöneich, “Redox properties of Met³⁵ in neurotoxic b-Amyloid peptide. A molecular modeling study” Chem. Res. Toxicol., 15, 408-418, (2002)

D. Pogocki, Ch. Schöneich, “Computational characterization of sulfur-oxygen bonded sulfuranyl radicals derived from alkyl- and (carboxyalkyl)thiopropionic acids: evidence for s*-type radicals” J. Org. Chem., 67, 1526-1535, (2002)

J.Grodkowski, P. Neta, E. Fujita, A. Mahammed, L. Simkovich, and Z. Gross "Reduction of Cobalt and Iron Corroles and Catalyzed Reduction of CO₂" J. Phys. Chem. A,106, 4772-4778, (2002)

J. Grodkowski and P. Neta "Reaction Kinetics in the Ionic Liquid Methyltributylammonium Bis(Trifluoromethylsulfonyl)imide. Pulse Radiolysis Study of ^•CF₃ Radical reactions” J. Phys. Chem. A, 106, 5468-5473, (2002)

A. Korzeniowska-Sobczuk, G. L. Hug, I. Carmichael, K. Bobrowski ]"Spectral, kinetics, and theoretical studies of radical cations derived from thioanisole and its carboxylic derivative” J. Phys. Chem., 106, (2002)

J. Grodkowski and P. Neta "Reaction kinetics in the ionic liquid methyltributylammonium bis(trifluoromethylsulfonyl)imide. Pulse radiolysis study of 4-mercaptobenzoic acid" J. Phys. Chem. A, 106, 9030-9035, (2002)

J. Grodkowski and P. Neta "Formation and reaction of Br₂^•- radicals in the ionic liquid methyltributylammonium bis(trifluoromethylsulfonyl)imide and in other solvents" J. Phys. Chem. A, 106, 11130-11134, (2002)

N. Varmenot, S. Remita, Z. Abedinzadeh, P. Wiśniowski, G. Strzelczak, K. Bobrowski "Oxidation processes of N,S-diacetyl-L-cysteine ethylester: influence of S-acetylation" J. Phys. Chem. A., 105, 6867, (2001)

I. Spasojević, I. Batinić-Haberle, R. D. Stevens, P. Hambright, A. N. Thorpe, J. Grodkowski, P. Neta,and I. Fridovich "Manganese(III) Biliverdin IX Dimethyl Ester: A Powerful Catalytic Scavenger of Superoxide Employing the Mn(III)/Mn(IV) Redox Couple" Inorg. Chem., 40, 726-739, (2001)

J. Grodkowski and P. Neta "Copper-Catalyzed Radiolytic Reduction of CO2 to CO in Aqueous Solutions" J. Phys. Chem. B, 105, 4967-4972, (2001)

C. Schöneich, B. Miller, G. L. Hug, K. Bobrowski, B. Marciniak "Intermolecular complexes between sulfide radical cations from b-hydroxy sulfides and phosphate” Res. Chem. Interm., 27, 165, (2001)

Ch. Schöneich, D. Pogocki, P. Wiśniowski, G. L. Hug, K. Bobrowski “Intramolecular sulfur-oxygen bond formation in radical cations of N-acetylmethionine amide” J. Am. Chem. Soc., 122, 10224-10225, (2000)

J. Grodkowski and P. Neta "Cobalt Corrin Catalyzed Photoreduction of CO₂" J. Phys. Chem. A, 104, 1848-1853, (2000)

J. Grodkowski and P. Neta "Ferrous Ions as Catalysts for Photochemical Reduction of CO2 in Homogeneous Solutions" J. Phys. Chem. A, 104, 4475-4479, (2000)

J. Grodkowski, T. Dhanasekaran, P. Neta, P. Hambright, B. S. Brunschwig, K. Shinozaki, and E. Fujita "Reduction of Cobalt and Iron Phthalocyanines and the Role of the Reduced Species in Catalyzed Photoreduction of CO2" J. Phys. Chem. A, 104, 11332-11339, (2000)

B. Beaver, V. Sharief, Y. Teng, R. DeMunshi, J. P. Guo, E. Katondo, D. Gallaher, D. Bunk, J. Grodkowski, and P. Neta "Development of Oxygen Scavenger Additives for Future Jet Fuels. A Role for Electron-Transfer-Initiated Oxygenation (ETIO) of 1,2,5-Trimethylpyrrole?" Energy&Fuels, 14, 441-447, (2000)

G. L. Hug, K. Bobrowski, H. Kozubek, B. Marciniak "Photooxidation of methionine-containing peptides by the 4-carboxybenzophenone triplet state in aqueous solution. Competition between intramolecular two-centered three-electron bonded (S.·.S)+ and (S.·.N)+ formation” Photochem. Photobiol., 72, 1, (2000)

G. L. Hug, K. Bobrowski, H. Kozubek, B. Marciniak, "pH Effects on the photooxidation of methionine derivatives by the 4-carboxybenzophenone triplet state”, Nukleonika, 45, 63, (2000)

G. Strzelczak, K. Bobrowski, H. Kozubek, J. Michalik, "ESR Study of radiation induced radicals in polycrystalline oligopeptides containing methionine”, Nukleonika, 45, 93, (2000)

K.Bobrowski, G.L.Hug, B.Marciniak, C.Schöneich, P. B. Wiśniowski "Intramolecular Hydrogen Transfer During Oxidation of b-Hydroxysulfides and a-(Methyl)thioacetamide. Pulse Radiolysis and Flash Photolysis Studies" Res. Chem. Intermed., vol. 25, No. 3, pp. 285-297, (1999).

T. Dhanasekaran, J. Grodkowski, P. Neta, P. Hambright and Etsuko Fujita "p-Terphenyl-Sensitized Photoreduction of CO2 with Cobalt and Iron Porphyrins. Interaction between CO and Reduced Metalloporphyrins" J. Phys. Chem. A, 103, 7742-7748, (1999)

J. Mirkowski, J.Grodkowski, “Measurement System for Pulse Radiolysis at the Linear Electron Accelerator LAE 13/9” Nukleonika vol. 44 No.1 p. 71-78, (1999)

K. Bobrowski, "Zastosowanie radiolizy impulsowej w badaniach reakcji foto-chemicznych" w „Metody badania mechanizmów reakcji fotochemicznych” Wydawnictwa Naukowe UAM, Poznań, 139, (1999)

K. Bobrowski, J. Holcman, J. Poznański, K. L. Wierzchowski, "Pulse radiolysis studies of intramolecular electron transfer in model peptides and proteins. 8. TrpNH^+• ->TyrO^• radical transformation in H-Trp-(Pro)n-Tyr-OH series of peptides" J. Phys. Chem. B., 103, 10316, (1999)

K. Bobrowski, "Electron migration in peptides and proteins" in "Properties and reactions of radiation induced transients - selected topics", J. Mayer (ed.),PWN, Warszawa, 177-204, (1999)

K. Bobrowski, D. Pogocki, Ch. Schöneich, “Oxidation of (carboxyl)thiopropionic acid derivatives by hydroxyl radicals. Mechanism nad kinetics of competitive inter- and intramolecular formation of s- and s*-type sulfuranyl radicals” J. Phys. Chem. A.; 102(51); 10512-10521, (1998).

P.Wiśniowski, K.Bobrowski "Hydroxyl Radical Induced Oxidation of a-(Methylthio)Acetamide in Aqueous Solutions" Annual Report INCT, 20-21, (1998)

G. L. Hug, K. Bobrowski, H. Kozubek, B. Marciniak, "Photooxidation of methionine derivatives by the 4-carboxybenzophenone triplet state in aqueous solution. Intra-complex proton transfer involving the amino group” Photochem. Photobiol., 68, 785, (1998)

J. Mirkowski, J.Grodkowski, “Oprogramowanie do obsługi stanowiska pomiarowego radiolizy impulsowej. Program Radio96” Annual Report INCT, (1998)

J. Mirkowski, “Program do analizy zdjęć elektroforezy – DNAnalyser” Annual Report INCT, (1998)

G. Strzelczak-Burlińska, K. Bobrowski, J. Holcman "Reduction of selected oligopeptides containing methionine induced by hydrated electrons" Radiat. Res., 150, 688, (1998)

K. Bobrowski, J. Holcman, J. Poznański, K. L. Wierzchowski "Long range electron transfer between proline-bridged aromatic amino acids" w Photochemistry and Radiation Chemistry: Complementary Methods for the Study of Electron Transfer; Advances in Chemistry Series No. 254; Wishart J. F. and Nocera D. G., 131-143, (1998)

G. Strzelczak-Burlińska, K. Bobrowski, D. Pogocki, J. Michalik "ESR study of radiation induced radicals in polycrystalline methionine and its homopeptides" Nukleonika, 42, 333, (1997)

J. Grodkowski, D. Behar, P. Neta, and P. Hambright, "Iron Porphyrin-Catalyzed Reduction of CO₂. Photochemical and Radiation Chemical Studies" J. Phys. Chem. A, 101(3, 248-254, (1997)

S. Cromer, P. Hambright, J. Grodkowski and P.Neta, "Tetrabenzoporhyrins: metal incorporation and exchange kinetics, ligational equilibria and pulse radiolysis studies" Porphyrins and Phtalocyanines, (1997)

K. Bobrowski, J. Holcman, J. Poznanski, K. L. Wierzchowski, "Pulse radiolysis studies of intramolecular electron transfer in model peptides and proteins. Trp ^. -> TyrO^. radical transformation in hen egg-white lysozyme. Effects of pH, temperature, Trp-62 oxidation and inhibitor binding" Biophys. Chem., (1998)

K. Bobrowski, "Zastosowanie radiolizy impulsowej w badaniach reakcji fotochemicznych" w: "Metody badania mechanizmów reakcji fotochemicznych" Wydawnictwa Naukowe UAM, Poznań, (1997)

K. Bobrowski, J. Holcman, J. Poznanski, K. L. Wierzchowski, "Long range electron transfer between proline-bridged aromatic amino acids" In: Advances in Chemistry Series, (1997)

K. Bobrowski, "Electron migration in peptides and proteins" In: Properties and reactions of radiation induced transients - selected topics, J. Mayer (ed.), PWN, Warszawa, (1997)

K. Bobrowski, G. L. Hug, B. Marciniak, B. Miller, Ch. Schöneich, "Mechanism of one-electron oxidation of b-,
g- and d-hydroxyalkyl sulfides. Catalysis through intramolecular proton transfer and sulfur-oxygen bond formation" J. Am. Chem. Soc., 119, 8000, (1997)

P.Wiśniowski, K.Bobrowski "Reactions of Hydroxyl Radical with Thioamides" Annual Report INCT 1997, 19-21, (1997)

Gordon L. Hug, Bronislaw Marciniak and Krzysztof Bobrowski "Acid-Base Equilibria Involved in Secondary Reactions Following the 4-Carboxybenzophenone Sensitized Photooxidation of Methionylglycine in Aqueous Solution. Spectral and Time Resolution of the Decaying (S .·. N)⁺ Radical Cation" J. Phys. Chem., 100(36), 14914-14921, (1996)

Dirk M. Guldi, Jason Field, Jan Grodkowski, P. Neta, and Emanuel Vogel, "One-Electron Oxidation of Metalloporphycenes As Studied by Radiolytic Methods" J. Phys. Chem., 100(32), 13609-13614, (1996)

G. L. Hug, B. Marciniak, K. Bobrowski, "Sensitized photooxidation of sulfur-containing amino acids and peptides in aqueous solution" J. Photochem. Photobiol. A., 95, 81, (1996)

J. Grodkowski, P. Neta, Y. Abdallah, P. Hambright, "Reduction and alkylation of rhodium porphyrin in alcohol solutions. Radiation chemical and photochemical studies" J. Phys. Chem., 100, 7066, (1996)

P. Neta, J. Grodkowski, A. B. Ross, "Rate constants for reactions of aliphatic carbon-centered radicals in aqueous solution" J. Phys. Chem. Ref. Data., 25, 709, (1996)

J. Grodkowski, P. Neta, P. Hambright, "Radiolytic reduction of rhodium porphyrins. Chain reaction in alkaline 2-propanol" J. Phys. Chem., 99, 6019, (1995)

B. Marciniak, G. L. Hug, J. Rozwadowski, K. Bobrowski, "The excited triplet state of N-(9-methylpurin-6-yl)pyridynium cation as an efficient photosensitizer in the oxidation of sulfur-containing amino acids. Laser flash and steady-state photolysis studies" J. Am. Chem. Soc., 117, 127, (1995)

B. Marciniak, G. L. Hug, K. Bobrowski, H. Kozubek, "On the mechanism of 4-carboxybenzophenone-sensitized photooxidation of methionine containing dipeptides and tripeptides" J. Phys. Chem., 99, 13560, (1995)

G. Burlinska, J. Michalik, K. Bobrowski, "An electron spin resonance study of gamma-irradiated polycrystalline methionine-containing peptides" Rad. Phys. Chem., 43, 425, (1994)

K. Bobrowski, G. L. Hug, B. Marciniak, H. Kozubek, "4-Carboxybenzophenone-sensitized photooxidation of sulfur-containing amino acids in alkaline aqueous solutions. Secondary photoreactions kinetics" J. Phys. Chem., 98, 537, (1994)

B. Marciniak, K. Bobrowski, G. L. Hug, J. Rozwadowski, "Photoinduced electron transfer between sulfur-containing carboxylic acids and 4-carboxybenzophenone triplet state in aqueous solutions" J. Phys. Chem., 98, 4854, (1994)

Ch. Schöneich, F. Zhao, K. P. Madden, K. Bobrowski, "Side chain fragmentation of N-terminal threonine or serine residue induced through intramolecular proton transfer to hydroxy sulfuranyl radical formed at neighboring methionine in dipeptides" J. Am. Chem. Soc., 116, 4641, (1994)

K. Bobrowski, G. L. Hug, B. Marciniak, "A reinvestigation of the mechanism of photoreduction of benzophenones by alkyl sulfides" J. Photochem. Photobiol. A., 81, 159, (1994)

Ch. Schöneich, K. Bobrowski, "Reaction of hydroxy sulfuranyl radical with molecular oxygen: electron transfer vs. addition" J. Phys. Chem., 98, 12613, (1994)