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Steffen Jockusch

Assoc Rsch Scientist

MC 3157

work:+1 212 854 1162

sj67@columbia.edu


Bio in Brief


Dr. rer. nat. (PhD), 1993
Organic Chemistry,
Martin-Luther-University
Halle-Wittenberg, Germany.

Graduated degree (Diplom), 1989
Organic Chemistry,
Technical University of Merseburg, Germany.


Associate Research Scientistn July 1997 - present
Department of Chemistry, Columbia University New York

Postdoctoral Research Fellow February 1994 - June 1997
(Recipient of the German Academic Exchange Service Postdoctoral Fellowship)
Advisor: Professor N. J. Turro, Columbia University, NY.

Graduate Research (Ph. D.) September 1989 - November 1993
Advisor: Professor H.-J. Timpe, Martin-Luther-University Halle-Wittenberg, Germany
Dissertation Title: "Photoinduced Energy and Electron Transfer between Ketones and Dyes"

Graduate Research (Diplom) September 1988 - August 1989
Advisor: Professor H.-J. Timpe, Dr. U. Mueller, Technical University of Merseburg, Germany.
Thesis Title: "Synthesis and Photopolymerization of Silicon Acrylates and Methacrylates".





Publications

(122)O’Connor, N. A.; Adam, J. B.; Lancaster, J. R.; Xinyu, G.; Jockusch, S.; Tomoki, N; Ogata, T.; Lee, S.; Zimmerman, P.; Willson, C. G.; Turro, N. J.:“Towards the design of a sequential two photon photoacid generator for double exposure photolithography.”Chem. Mater., 2008, 20, 7374-7376.

(121)Lancaster, J. R.; Marti, A. A.; Lopez-Gejo, J.; Jockusch, S.; O’Connor, N.; Turro, N. J.: “Nonradiative deactivation of singlet oxygen (1O2) by cubane and its derivatives.”Org. Lett. 2008, 10, 5509-5512.

(120)Moser, S.; Mueller, T.; Ebert, M.-O.; Jockusch, S.; Turro, N. J.; Kraeutler, B.:“Blue Luminescence of Ripening Bananas.”Angew. Chem. 2008, 120, 9087-9091; Angew. Chem. Int. Ed. 2008, 47, 8954-8957.

(119)Turro, N. J.; Marti, A. A.; Chen, J. Y.-C.; Jockusch, S.; Lawler, R. G.; Ruzzi, M.; Sartori, E.; Chuang, S.-C.; Komatsu, K.; Murata, Y.:“Demonstration of a Chemical Transformation Inside a Fullerene.The Reversible Conversion of the Allotropes of H2@C60.”J. Am. Chem. Soc. 2008, 130, 10506-10507.

(118)Chen, J. Y.-C.; Jayaraja, N.; Jockusch, S.; Ottaviani, M. F.; Ramamurthy, V.; Turro, N. J.:“EPR and NMR study of supramolecular effects on paramagnetic interaction between a nitroxide incarcerated within a nanocapsule with a nitroxide in bulk aqueous media.”J. Am. Chem. Soc. 2008, 130, 7206-7207.

(117)Keskin, S.; Jockusch, S.; Turro, N. J.; Arsu, N.: “2-Mercaptothioxanthone as sensitizer and co-initiator for acylphosphine oxide photoinitiators for free radical polymerization.”Macromolecules 2008, 41, 4631-4634.

(116)Chin, K. K.; Trevithick-Sutton, C. C.; McCallum, J.; Jockusch, S.; Turro, N. J.; Scaiano, J. C.; Foote, C. S.; Garcia-Garibay, M. A.:“Quantitative detection of singlet oxygen generated by excited state aromatic amino acids, proteins, and immunoglobulins.”J. Am. Chem. Soc. 2008, 130, 6912-6913.

(115)Solomon, M. R.; Sivaguru, J.; Jockusch, S.; Adam, W.; Turro, N. J.:“Vibrational deactivation of singlet oxygen: does it play a role in stereoselectivity during photooxygenation?” Photochem. Photobiol. Sci., 2008, 7, 531-533.

(114)Lei, X.-G.; Jockusch, S.; Turro, N. J.; Tomalia, D. A.; Ottaviani, M. F.: “EPR characterization of gadolinium(III)-containing-PAMAM-dendrimers in the absence and the presence of paramagnetic probes.” J. Coll. Interf. Sci., 2008, 322, 457-464.

(113)Kim, S. R.; Jockusch, S.; Itagaki, Y.; Turro, N. J.; Sparrow, J. R.:“Mechanisms involved in A2E oxidation.”Exp. Eye Res., 2008, 86, 975-982.

(112)He, G. S.; Qin, H.-Y.; Zheng, Q.; Prasad, P. N.; Jockusch, S.; Turro, N. J.; Halim, M.; Sames, D.; Ågren, H.; He, S.: “Dynamic properties and optical phase conjugation of two-photon pumped ultrashort blue stimulated emission in a chromophore solution”Phys. Rev. A, 2008, 77, 013824.

(111)Tasdelen, M. A.; Kumbaraci, V.; Jockusch, S.; Turro, N. J.; Talinli, N.; Yagci, Y.:“Photoacid generation by stepwise two-photon absorption:Photoinitiated cationic polymerization of cyclohexene oxide by using benzodioxinone in the presence of iodonium salt.”Macromolecules, 2008, 41, 295-297.

(110)Wakata, A.; Cahill, S. M.; Blumenstein, M.; Gunby, R. H.; Jockusch, S.; Marti, A. A.; Cimbro, B.; Gambacorti-Passerini, C.; Donella-Deana, A.; Pinna, L. A.; Turro, N. J.; Lawrence, D. S.: “A Mechanistic Design Principle for Protein Tyrosine Kinase Sensors: Application to a Validated Cancer Target” Org. Lett., 2008, 10, 301-304.

(109)Sivaguru, J.; Solomon, M. R.; Poon, T,; Jockusch, S.; Bosio, S. G.; Adam, W.; Turro, N. J.: “The reaction of singlet oxygen with enecarbamates: a mechanistic playground for investigating chemoselectivity, stereoselectivity and vibratioselectivity of photooxidations”Acc. Chem. Res., 2008, 41, 387-400.

(108)Jockusch, S.; Turro, N. J.; Thompson, E. K.; Gouterman, M.; Callis, J. B.; Khalil, G. E.:“Singlet Molecular Oxygen by Direct Excitation.” Photochem. Photobiol. Sci., 2008, 7, 235-239.

(107) Conlon, P.; Yang, C. J.; Wu, Y.; Chen, Y.; Martinez, K., Kim, Y.; Stevens, N.; Marti, A. A.; Jockusch, S.; Turro, N. J.; Tan, W.: “Pyrene excimer signaling molecular beacons for probing nucleic acids.”J. Am. Chem. Soc., 2008, 130, 336-342.

(106)Kim, S. R.; Jang, Y. P.; Jockusch, S.; Itagaki, Y.; Turro, N. J. Nakanishi, K.; Sparrow, J. R.:“The all-trans-retinal dimer-series of lipofuscin pigments in retinal pigment epithelial cells in a recessive Stargardt disease model.” Proc. Nat. Acad. Sci. USA, 2007, 104, 19273-19278.

(105)López-Gejo, J.; Marti, A. A.; Ruzzi, M.; Jockusch, S.; Komatsu, K.; Tanabe, F.; Murata, Y.; Turro, N. J.: “Can H2 Inside C60 Communicate with the Outside World?”J. Am. Chem. Soc., 2007, 104, 14554-14555.

(104)Abeywickrama, C.; Matsuda, H.; Jockusch, S.; Zhou, J.; Jang, Young P.; Chen, B.-X.; Itagaki, Y.; Erlanger, B.; Nakanishi, K.; Turro, N. J.; Sparrow, J. R.: “Immunochemical recognition of A2E, a pigment in the lipofuscin of retinal pigment epithelial cells.” Proc. Nat. Acad. Sci. USA, 2007, 104, 14610-14615.

(103) Marti, A. A.; Puckett, C. A.; Dyer, J.; Stevens, N.; Jockusch, S.; Ju, J.; Barton, J. K.; Turro, N. J. “Inorganic-Organic Hybrid Luminescent Binary Probe for DNA Detection Based on Spin-Forbidden Resonance Energy Transfer.” J. Am. Chem. Soc., 2007, 129, 8680-8681

(102) Halim, M.; Tremblay, M. S.; Jockusch, S.; Turro, N. J.; Sames, D.: “Transposing Molecular Fluorescent Switches into the Near-IR: Development of Luminogenic Reporter Substrates for Redox Metabolism.” J. Am. Chem. Soc., 2007, 129, 7704-7705

(101) Washington, I.; Zhou, J.; Jockusch, S.; Turro, N. J.; Nakanishi, K.; Sparrow, J. R.: “Chlorophyll derivatives as visual pigments for super vision in the red.” Photochem. Photobiol. Sci., 2007, 6, 775-779

(100)Jockusch, S.; Zheng, Q.; He, G. S.; Pudavar, H. E.; Yee, D. J.; Balsanek, V.; Halim, M.; Sames, D.; Prasad, P. N.; Turro, N. J.: “Two-photon excitation of fluorogenic probes for redox metabolism: Dramatic enhancement of optical contrast ratio by two-photon excitation.” J. Phys. Chem. C, 2007, 111, 8872-8877

(99) Martí, A. A.; Jockusch, S.; Stevens, N.; Ju, J.; Turro, N. J.: “Fluorescent hybridization probes for sensitive and selective DNA and RNA detection.” Acc. Chem. Res., 2007, 63, 3591-3600

(98) Yagci, Y.; Jockusch, S.; Turro, N. J.: “Mechanism of Photoinduced Step Polymerization of Thiophene by Onium Salts: Reactions of Phenyliodinium and Diphenylsulfinium Radical Cations with Thiophene.” Macromolecules, 2007, 40, 4481-4485

(97) Balta, D. K.; Arsu, N.; Yagci, Y.; Jockusch, S.; Turro, N. J.: “Thioxanthone-Anthracene: A New Photoinitiator for Free Radical Polymerization in the Presence of Oxygen.” Macromolecules, 2007, 40, 4138-4141

(96) Deo, P.; Deo, N.; Somasundaran, P.; Moscatelli, A.; Jockusch, S.; Turro, N. J.; Ananthapadmanabhan, K. P.; Ottaviani, M. F.: “Interactions of a Hydrophobically Modified Polymer with Oppositely Charged Surfactants.” Langmuir, 2007, 23, 5906-5913

(95) Natarajan, A.; Kaanumalle, L. S.; Jockusch, S.; Gibb, C. L. D.; Gibb, B. C.; Turro, N. J.; Ramamurthy, V.: “Controlling photoreactions with restricted spaces and weak intermolecular forces: Exquisite selectivity during oxidation of olefins by singlet oxygen.” J. Am. Chem. Soc., 2007, 129, 4132-4133

(94) Martí, A. A.; Li, X.; Jockusch, S.; Stevens, N.; Li, Z.; Raveendra, B.; Kalachikov, S.; Morozova, I.; Russo, J.; Akins, D. L.; Ju, J.; Turro, N. J.: “Design and characterization of two-dye and three-dye binary fluorescent probes for mRNA detection.” Tetrahedron, 2007, 63, 3591-3600

(93) Saito, H.; Sivaguru, J.; Jockusch, S.; Dyer, J.; Inoue, Y., Adam, W., Turro, N. J.: “Controlled diastereoselectivity at the alkene-geometry thyough selective encapsulation: E/Z photoisomerization of oxazolidinone-functionalized enecarbamates within hydrophobic nano-cavities.” Chem. Commun., 2007, 819-821

(92) Khalil, G. E.; Thompson, E. K.; Gouterman, M.; Callis, J. B.; Dalton, L. R.; Turro, N. J.; Jockusch, S.: “NIR luminescence of gadolinium porphyrin complexes.” Chem. Phys. Lett., 2007, 435, 45-49

(91) Moscatelli, A.; Ottaviani, F. M.; Adam, W.; Buchachenko, A.; Jockusch, S.; Turro, N. J.: “Interaction between molecular oxygen and nitroxide radicals: A search for a reversible complex.” Helv. Chim. Acta, 2006, 89, 2441-2449

(90) Sivaguru, J.; Poon, T.; Hooper, C.; Saito, H.; Solomon, M. R.; Jockusch, S.; Adam, W.; Inoue, Y.; Turro, N. J.: “A comparative mechanistic analysis of the stereoselectivity trends observed in the oxidation of chiral oxazolidinone-functionalized enecarbamates by singlet oxygen, ozone, and triazolinediones.” Tetrahedron, 2006, 62, 10647-10659

(89) Li, X.; Li, Z.; Martí, A. A.; Jockusch, S.; Stevens, N.; Akins, D. L.; Turro, N. J.; Ju, J.: “Combinatorial fluorescence energy transfer molecular beacons for probing nucleic acid sequences.” Photochem. Photobiol. Sci., 2006, 5, 896-902.

(88) Arsu, N.; Aydin, M.; Yagci, Y.; Jockusch, S. Turro, N. J.: “One component thioxanthone based Type II photoinitiators” in Photochemistry and UV Curing: New Trends, ed. J. P. Fouassier, Research Signpost, Kerala, India, 2006, Chapter 3, pp 17-29.

(87) Tremblay, M. S.; Zhu, Q.; Martí, A. A.; Dyer, J.; Halim, M.; Jockusch, S.; Turro, N. J.; Sames, D.: “Phosphorylation state-responsive lanthanide peptide conjugates: A luminescence switch based on reversible complex reorganization.” Org. Lett., 2006, 8, 2723-2726.

(86) Martí, A. A.; Li, X.; Jockusch, S.; Li, Z.; Raveendra, B.; Kalachikov, S.; Russo, J.; Morozova, I.; Puthanveettil, S. V.; Ju, J.; Turro, N. J.: “Pyrene binary probes for unambiguous detection of mRNA using time resolved fluorescence spectroscopy.” Nucleic Acid Res., 2006, 34, 3161-3168.

(85) Marti, A. A.; Jockusch, S.; Li, Z.; Turro, N. J.; Ju, J.: Molecular beacons with intrinsically fluorescent nucleotides.” Nucleic Acid Res., 2006, 34, e50.

(84) Jockusch, S.; Marti, A. A.; Turro, N. J.; Li, Z.; Li, X.; Ju, J.; Stevens, N.; Akins, D. L.: “Spectroscopic investigation of a FRET Molecular Beacon containing two fluorophores for probing of DNA/RNA sequences.” Photochem. Photobiol. Sci., 2006, 5, 493-498.

(83) Balaz, M.; Li, B. C.; Jockusch, S.; Ellestad, G. A.; Berova, N.: “Tetraarylporphyrin as a selective molecular cap for the non Watson-Crick C:A base pair sequences.” Angew. Chem. 2006, 118, 3610-3613; Angew. Chem. Int. Ed. 2006, 45, 3530-3533.

(82) Moscatelli, A.; Chen, T. K.; Jockusch, S.; Ottaviani, F. M.; Forbes, M.; Turro, N. J.; “Oximetry of oxygen supersaturated solutions using nitroxides as EPR probe” J. Phys. Chem. A, 2006, 110, 7574-7578.

(81) Sivaguru, J.; Solomon, M. R.; Saito, H.; Poon, T.; Jockusch, S.; Adam, W.; Ramamurthy, V.; Inoue, Y.; Turro, N. J.: “Conformationally controlled (entropy effects), stereoselective vibrational quenching of singlet oxygen in the oxidative cleavage of oxazolidinone-functiionalized enecarbamates through solvent and temperature variations.” Tetrahedron, 2006, 62, 6707-6717.

(80) Sivaguru, J.; Saito, H.; Solomon, M. R.; Kaanumalle, L. S.; Poon, T.; Jockusch, S.; Adam, W.; Ramamurthy, V.; Inoue, Y.; Turro, N. J.: “Control of chirality by cations in confined spaces: Photooxydation of enecarbamates inside zeolite supercages.” Photochem. Photobiol., 2006, 82, 123-131.

(79) Yang, C. J.; Jockusch, S.; Vicens, M.; Turro, N. J.; Tan, W.; “Light-switching excimer probes for rapid protein monitoring in complex biological fluids.” Proc. Nat. Acad. Sci. USA, 2005, 102, 17278-17283.

(78) Martinez, C. G.; Jockusch, S.; Ruzzi, M.; Sartori, E.; Moscatelli, A. Turro, N. J.; Buchachenko, A. L.: “Chemically Induced Dynamic Electron Polarization Generated through the Interaction between Singlet Molecular Oxygen and Nitroxide Radicals” J. Phys. Chem. A, 2005, 109, 10216-10221.

(77) Deo, P.; Deo, N.; Somasundaran, P.; Jockusch, S.; Turro, N. J.: “Conformational changes of pyrene-labeled polyelectrolytes with pH: Effect of hydrophobic modifications.” J. Phys. Chem. B, 2005, 109, 20714-20718.

(76) Washington, I.; Jockusch, S.; Itagaki, Y.; Turro, N. J.; Nakanishi, K.: “Superoxidation of Bisretinoids.” Angew. Chem. 2005, 117, 7259-7262; Angew. Chem. Int. Ed. 2005, 44, 7097-7100.

(75) Lee, K.; Kunjappu, J.; Jockusch, S.; Turro, N. J.; Widerschpan, T.; Zhou, J.; Snith, B. W.; Zimmerman, P.; Conley, W.: “Amplification of the Index of Refraction of Aqueous Immersion Fluids by Ionic Surfactants” Proc. of SPIE, 2005, 5753, 537-553.

(74) Saito, H.; Sivaguru, J.; Jockusch, S.; Inoue, Y., Adam, W., Turro, N. J.: “Stereoselective E/Z photoisomerization of oxazolidinone functionalized enecarbamates: direct and triplet sensitized irradiation.” Chem. Commun., 2005, 3424-3426.

(73) Lee, K.; Jockusch, S.; Turro, N. J.; French, R. H.; Wheland, R. C.; Lemon, M. F.; Braun, A. M.; Widerschpan, T.; Dixon, D. A.; Li, L.; Marius, I.; Zimmerman, P.: “157 nm pellicles (thin films) for photolithography: Mechanistic investigation of the VUV and UV-C photolysis of fluorocarbons.” J. Am. Chem. Soc., 2005, 127, 8320-8327.

(72) Jockusch, S.; Sivaguru, J.; Turro, N. J.; Ramamurthy, V.: “Direct measurement of singlet oxygen lifetime in zeolites by near-IR phosphorescence.” Photochem. Photobiol. Sci., 2005, 4, 403-405.

(71) Sivaguru, J.; Saito, H.; Poon, T.; Omonuwa, T., Franz, R.; Jockusch, S.; Hooper, C., Inoue, Y., Adam, W., Turro, N. J.: “Stereoselective photooxidation of enecarbamates: Reactivity of ozone vs singlet oxygen.” Org. Lett., 2005, 7, 2089-2092.

(70) Khalil, G. E.; Chang, A.; Gouterman, M.; Callis, J. B.; Dalton, L. R.; Turro, N. J.; Jockusch, S.: “Oxygen pressure measurement using singlet oxygen emission.” Rev. Sci. Instrum., 2005, 76, 054101

(69) Aydin, M.; Arsu, N.; Yagci, Y.; Jockusch, S.; Turro, N. J.: “Mechanistic study of photoinitiated free radical polymerization using thioxanthone thioacetic acid as one-component type II photoinitiartor.” Macromolecules, 2005, 38, 4133-4138.

(68) Dyer, J.; Jockusch, S.; Balsanek, V.; Sames, D.; Turro, N. J.: “Two-photon induced uncaging of a reactive intermediate. Multi-photon in situ detection of a potentially valuable label for biological applications” J. Org. Chem., 2005, 70, 2143-2147.

(67) Jockusch, S.; Li, Z.; Ju, J.; Turro, N. J.: “Two-photon excitation induced fluorescence of a tri-fluorophore labeled DNA.” Photochem. Photobiol., 2005, 81, 238-241.

(66) Wines, T. H.; Somasundaran, P.; Turro, N. J.; Jockusch, S.; Ottaviani, M. F.: “Investigation of the mobility of amphiphilic polymer – AOT reverse microemulsion systems using electron spin resonance.” J. Colloids Interface Sci., 2005, 285, 318-325.

(65) Dukovic, G.; White, B. E.; Zhou, Z.; Wang, F.; Jockusch, S.; Steigerwald, M. L.; Heinz, T. F.; Friesner, R. A.; Turro, N. J.; Brus, L. E.: “Reversible Surface Oxidation and Efficient Luminescence Quenching in Semiconductor Single-Wall Carbon Nanotubes.” J. Am. Chem. Soc., 2004, 126, 15269-15276.

(64) Ottaviani, M. F.; Jockusch, S.; Turro, N. J.; Tomalia, D. A.; Barbon, A.: “Interactions of Dendrimers with Selected Amino Acids and Proteins Studied by Continuous Wave EPR and Fourier Transform EPR” Langmuir, 2004, 20, 10238-10245.

(63) Lee, K.; Jockusch, S.; Turro, N. J.; French, R. H.; Wheland, R. C.; Lemon, M. F.; Braun, A. M.; Widerschpan, T.; Zimmerman, P.: “157 nm Pellicles for Photolithography: Mechanistic Investigation of the Deep UV Photolysis of Fluorocarbons.” Proc. of SPIE, 2004, 5377, 1598-1605.

(62) Sivaguru, J.; Poon, T.; Franz, R.; Jockusch, S.; Adam, W.; Turro, N. J.: “Stereocontrol within Confined Spaces: Enantioselectivitive Photooxidation of Enecarbamates inside Zeolite Supercages.” J. Am. Chem. Soc., 2004, 126, 10816-10817.

(61) Poon, T.; Sivaguru, J.; Franz, R.; Jockusch, S.; Martinez, C.; Washington, I.; Adam, W.; Inoue, Y; Turro, N. J.: “Temperature and Solvent Control of the Stereoselectivity in the Reactions of Singlet Oxygen with Oxazolidinone-Substituted Enecarbamates.” J. Am. Chem. Soc., 2004, 126, 104989-10499.

(60) Jockusch, S.; Ren, R. X-F.; Jang, Y. P.; Itagaki, Y.; Vollmer-Snarr, H.; Sparrow, J. R.; Nakanishi, K.; Turro, N. J.: “Photochemistry of A1E, a Retinoid with a Conjugated Pyridinium Moiety: Competition between Pericyclic Photooxygenation and Pericyclization” J. Am. Chem. Soc., 2004, 126, 4646-4652.

(59) Pan, Z.; Somasundaran, P.; Turro, N. J.; Jockusch, S.: "Interactions of cationic dendrimers with hematite mineral" Colloids and Surfaces, A, 2004, 238, 123-126.

(58) Fede, J.-M., Jockusch, S; Lin, N.; Moss, R. A.; Turro, N. J.: “Aryloxy Radicals from Diaryloxydiazirenes: ?-Cleavege of Diaryloxycarbenes of Excited Diazirines?” Org. Lett. 2003, 5, 5027-5030.

(57) Poon, T.; Turro, N. J.; Chapman, J.; Lakshminarasimhan, P.; Lei, X.; Jockusch, S.; Franz, R.; Washington, I.; Adam, W. Bosio, S. G.: “Stereochemical Features of the Physical and Chemical Interactions of Singlet oxygen with Enecarbamates.” Org. Lett. 2003, 5, 4951-4953.

(56) Sivaguru, J.; Jockusch, S.; Turro, N. J.; Ramamurthy, V.: “Photoisomerization of 2,3-Diphenylcyclopropane-1-carboxylic Acid Derivatives” Photochem. Photobiol. Sci., 2003, 2, 1101-1106.

(55) Lei, X.-G.; Jockusch, S.; Ottaviani. M. F.; Turro, N. J.: “In situ ESR investigation of the addition of persistent benzyl radicals to acrylates on ZSM-5 zeolites. Direct spectroscopic detection of the initial steps in a supramolecular photopolymerization.” Photochem. Photobiol. Sci., 2003, 2, 1095-1100.

(54) Deo, P.; Jockusch, S.; Ottaviani, M. F.; Moscatelli, A.; Turro, N. J.; Somasundaran, P. "Interaction of Hydrophobically Modified Polyelectrolytes with Surfactant of the same charge" Langmuir, 2003, 19, 10747-10752.

(53) Deo, N.; Jockusch, S.; Turro, N. J.; Somasundaran, P.: "Surfactant Interactions with Zein Protein" Langmuir, 2003, 19, 5083-5088.

(52) Sparrow, J. R.; Vollmer-Snarr, H. R.; Zhou, J.; Jang,Y. P.; Jockusch, S.; Itagaki, Y.; Nakanishi, K.: "A2E-epoxides Damage DNA in Retinal Pigment Epithelial cells. VitaminsE and C and Other Antioxidants Inhibit A2E-epoxide formation" J. Biol. Chem. 2003, 278, 18207-18213.

(51) Bossmann, S. H.; Jockusch, S.; Schwarz, P.; Baumeister, B.; Goeb, S.; Schnabel, C.; Payawan, Jr., L.; Pokhrel, M. R.; Woerner, M.; Braun, A. M.; Turro, N. J.: "Ruthenium(II)-tris-bipyridine/titanium dioxide codoped zeolite Y photocatalysts: II. Photocatalyzed degradation of the model pollutant 2,4-Xylidine, evidence for percolation behavior" Photochem. Photobiol. Sci., 2003, 2, 477-486.

(50) Shailaja, J.; Lakshminarasimhan, P. H.; Pradhan, A.; Sunoj, R. B.; Jockusch, S.; Karthikeyan, S.; Uppili, S.; Chandrasekhar, J.; Turro, N. J.; Ramamurthy, V.: "Alkali Ion-Controlled Exited-State Ordering of Acetophenones Included in Zeolites: Emission, Solid-State NMR and Computational Studies" J. Phys. Chem. A, 2003, 107, 3187-3198

(49) Khudyakov, I. V.; Arsu, N.; Jockusch, S.; Turro, N. J.: "Magnetic and spin effects in the photoinitiation of polymerization" Designed Monomers & Polymers, 2003, 6, 91-101.

(48) Dursun, C.; Degirmenci, M.; Yagci, Y.; Jockusch, S.; Turro, N. J.: “Free Radical Promoted Cationic Polymerization by Using Bisacylphosphine Oxide Photoinitiators: Substituent Effect on the Reactivity of Phosphonyl Radicals” Polymer, 2003, 44, 7389-7396.

(47) Cokbaglan, L.; Arsu, N.; Yagci, Y.; Jockusch, S.; Turro, N. J.: “2-Mercaptothioxanthone as a Novel Photoinitiator for Free Radical Polymerization.” Macromolecules, 2003, 36, 2649-2653.

(46) Bai, X.; Li, Z.; Jockusch, S.; Turro, N. J.; Ju, J.: “Photocleavage of a 2-Nitrobenzyl Linker Bridging a Fluorophore to the 5’ End of DNA” Proc. Nat. Acad. Sci. USA, 2003, 100, 409-413.

(45) Ottaviani, M. F.; Turro, N. J.; Jockusch, S.; Tomalia, D. A.: "EPR Investigation of the adsorption of dendrimers on porous surfaces" J. Phys. Chem. B, 2003, 107, 2046-2053.

(44) Jockusch, S.; Turro, N. J.; Blackburn, F. R.: "Photochromism of 2H-Naphtho[1,2-b]pyans: A Spectroscopic Investigation." J. Phys. Chem. A, 2002, 106, 9236-9241.

(43) Colley, C. S.; Grills, D. C.; Besley, N. A.; Jockusch, S.; Matousek, P.; Parker, W.; Towrie, M.; Turro, N. J.; Gill, P. M. W.; George, M. W.: "Probing the Reactivity of Photoinitiators for Free Radical Polymerization: Time-Resolved IR Spectroscopic Study of Benzoyl Radicals." J. Am. Chem. Soc., 2002, 124, 14952-14958.

(42) Jockusch, S; Turro, N. J.; Ottaviani, M. F.; Tomalia, D. A.: "An EPR and Fluorescence Depolarization Study of Intermolecular Interactions of Dendrimers at Medium and Highly Concentrated Aqueous Solutions." J. Colloids Interface Sci., 2002, 256, 223-227.

(41) Kumar, C. V.; Buranaprapuk, A.; Sze, Ho Chou; Jockusch, S.; Turro, N. J.: "Chiral Protein Scissors: High Enantiomeric Selectivity for Binding and its Effect on Protein Photocleavage Efficiency and Specifity." Proc. Nat. Acad. Sci. USA, 2002, 99, 5810-5815.

(40) Turro, N. J.; Jockusch, S.; Lei, X.-G.: “Supramolecular Effects on the Dynamics of Radicals in MFI Zeolites: A Direct EPR Investigation.” J. Org. Chem. 2002, 67, 5779-5782.

(39) Turro, N. J.; Lei, X.-G.; Jockusch, S.; Li, W.; Liu, Z.; Abrams, L.; Ottaviani, M. F.: “An EPR Investigation of Persistent Radicals Produced from the Photolysis of Dibenzyl Ketones Adsorbrd on ZSM-5 Zeolites.” J. Org. Chem. 2002, 67, 2606-2618.

(38) Panmai, S.; Prud'home, R. K.; Peiffer, D. G.; Jockusch, S.; Turro, N. J.: "Interactions Between Hydrophobically Modified Polymers and Surfactants: A Fluorescence Study" Langmuir, 2002, 18, 3860-3864.

(37) Turro, N. J.; P. H. Lakshminarasimhan; Jockusch, S; O'Brien, S. P.; Redl, F. X.: " A Spectroscopic Probe of the Surface of Iron Oxide Nanocrystals." Nanoletters, 2002, 2, 325-328.

(36) Ben-Shabat, S.; Itagaki, Y.; Jockusch, S.; Sparrow, J. R.; Nakanishi, K.; Turro, N. J.: "Formation of a Nona-oxirane from A2E, a Lipofuscin Fluorophore related to Macular Degradation, and Evidence of Singlet Oxygen Involvement." Angew. Chem., 2002, 114, 842-845; Angew. Chem. Int. Ed., 2002, 41, 814-817.

(35) Ottaviani, M. F.; Favuzza, P.; Sacchi, B.; Turro, N.; Jockusch, S.; Tomalia, D. A.: "Interactions between Starburst Dendrimers and Mixed DMPC/DMPA-Na Vesicles Studied by the Spin Label and the Spin Probe Techniques, Supported by TEM." Langmuir, 2002, 18, 2347-2357.

(34) Tong, A. K.; Jockusch, S.; Li, Z.; Zhu, H.-R.; Akins, D. L.; Turro, N. J.; Ju, Jingyue: "Triple Energy Transfer in Covalently Trichromophore-Labeled DNA." J. Am. Chem. Soc., 2001, 123, 12923-12924.

(33) Pillips, K. E. S.; Katz, T. J.; Jockusch, S.; Lovinger, A. J.; Turro, N. J.: "Synthesis and Properties of an Aggregating Heterocyclic Helicene." J. Am. Chem. Soc., 2001, 123, 11899-11907.

(32) Jockusch, S.; Liu, Z.; Ottaviani, M. F.; Turro, N. J.: "Time Resolved CW-EPR Spectroscopy of Powdered Samples: Electron Spin Polarization of a Nitroxyl Radical Adsorbed on NaY Zeolite, Generated by Quenching of Excited Triplet Ketones." J. Phys. Chem. B, 2001, 105, 7477-7481.

(31) Jockusch, S.; Landis, M. S.; Freiermuth, B.; Turro, N. J.: "Photochemistry and Photophysics of ?-Hydroxy Ketones." Macromolecules, 2001, 34, 1619-1626.

(30) Uppili, S.; Marti, V.; Nikolaus, A.; Jockusch, S.; Adam, W.; Engel, P. S.; Turro, N. J.; Ramamurthy, V.: "Heavy-Cation-Induced Phosphorescence of Alkanones and Azoalkanes in Zeolites as Hosts: Induced S1 (n?*) to T1 (n?*) Intersystem Crossing and S0 to T1 (n?*) Absorption." J. Am. Chem. Soc., 2000, 122, 11025-11026.

(29) Turro, N. J.; Lei, X.; Niu, S. Liu, Z.; Jockusch, S.; Ottaviani. M. F.: "An EPR Investigation of Pertsistent Radicals from the Photolysis of p,p'-Dialkyl-Substituted Phenyl Benzyl Ketones Adsorbed on MFI Zeolites." Org. Lett., 2000, 2, 3991-3994.

(28) Ottaviani, M. F.; Furida, F.; Casini, A.; Turro, N. J.; Jockusch, S.; Tomalia, D. A.; Messori, L.: "Formation of Supramolecular Structures between DNA and Starburst Dendrimers Studied by EPR, CD, UV and Melting Profiles." Macromolecules, 2000, 33, 7842-7851.

(27) Ottaviani, M. F.; Favuzza, P.; Bigazzi, M.; Turro, N. J.; Jockusch, S.; Tomalia, D. A.: "TEM and EPR Investigation of the Competitive Binding of Uranyl Ions to Starburst Dendrimers and Liposomes. Potential Use of Dendrimers as Uranyl Ion Sponges." Langmuir, 2000, 16, 7368-7372.

(26) Buranaprapuk, A.; Kumar, C. V.; Jockusch, S.; Turro, N. J.: "Photochemical Protein Scissors: Role of Aromatic Residues on the Binding Affinity and Photocleavage Efficiency by Pyrenyl Peptides." Tedrahedron, 2000, 56, 7019-7025.

(25) Schwarz, O.; van Loyen, D.; Jockusch, S.; Turro, N. J.; Duerr, H.: "Preparation and Application of new Ruthenium(II) polypyridyl Complexes as Sensitizers for Nanocrystalline TiO2." J. Photochem Photobiol. A: Chem., 2000, 132, 91-98.

(24) Jockusch, S.; Hirano, T.; Turro, N. J.: "A Spectroscopic Study of Diphenylmethyl Radicals and Diphenylmethyl Carbocations Stabilized by Zeolites." J. Phys. Chem. B, 2000, 104, 1212-1216.

(23) Nehira, T.; Parish, C. A.; Jockusch, S.; Turro, N. J.; Nakanishi, K.; Berova, N.: "Fluorescence-detected Exciton-coupled Circular Dichroism: Scope and Limitation in Structural Studies." J. Am. Chem. Soc., 1999, 38, 8681-8691.

(22) Jockusch, S.; Dedola, G.; Lem, G.; Turro, N. J.: "Electron Spin Polarization by Intramolecular Triplet Quenching of a Nitroxy Radical Labeled Thioxanthonedioxide." J. Phys. Chem. B, 1999, 103, 9126-9129.

(21) Jockusch, S.; Ramirez, J.; Sanghvi, K.; Nociti, R.;Turro, N. J.; Tomalia, D. A.: “Comparison of Nitrogen Core and Ethylenediamine Core Starburst Dendrimers through Photochemical and Spectroscopic Probes.” Macromolecules, 1999, 32, 4419-4423.

(20) Ottaviani, M. F.; Sacchi, B.; Turro, N. J.; Chen, W.; Jockusch, S.; Tomalia, D. A.: "An EPR Study of the Interaction between Starburst Dendrimers and Polynucleotides." Macromolecules, 1999, 32, 2275-2282.

(19) Jockusch, S.; Turro, N. J.: "Radical Addition Rate Constants to Acrylates and Oxygen: ?-Hydroxy and ?-Amino Radicals Produced by Photolysis of Photoinitiators." J. Am. Chem. Soc., 1999, 121, 3921-3925.

(18) Jockusch, S.; Turro, N. J.: "Phosphinoyl Radicals - Structure and Reactivity. A Laser Flash Photolysis and Time Resolved ESR Investigation." J. Am. Chem. Soc., 1998, 3120, 11773-11777.

(17) Kumar, C. V.; Buranaprapuk, A.; Opiteck, G. J.; Moyer, M. B.; Jockusch, S.; Turro, N. J.: "Novel Photochemical Protease: Site-Specific Photocleavage of Hen Egg Lysozyme and Bovine Serum Albumin." Proc. Nat. Acad. Sci. US., 1998, 95, 10361-10365.

(16) Fang, K.; Hashimoto, M.; Jockusch, S.; Turro, N. J.; Nakanishi, K.: "A Bifunctional Photoaffinity Probe for Ligand/ Receptor Interaction Studies." J. Am. Chem. Soc., 1998, 120, 8543-8544.

(15) Panmai, S.; Prud'home, R. K.; Peiffer, D. G.; Jockusch, S.; Turro, N. J.: "Rheology of solutions of hydrophobically modified polymers with spherical and rod-like surfactant micelles." Polym. Mater. Sci. Eng. , 1998, 79, 419-420.

(14) Ottaviani, M. F.; Matteini, P.; Brustolon, M.; Turro, N. J.; Jockusch, S. and Tomalia, D. A.: "Characterization of Starburst Dendrimers and Vesicle Solutions and their Interactions by cw- and Pulsed-EPR, TEM, and Dynamic Light Scattering." J. Phys. Chem. B, 1998, 102, 6029-6039.

(13) Jockusch, S.; Koptyug, I. V.; McGarry, P. F.; Sluggett, G. W.; Turro, N. J. and Watkins, D. M.: "A Steady-State and Picosecond Pump-Probe Investigation of the Photophysics of an Acyl and a Bis(acyl)posphine oxide," J. Am. Chem. Soc., 1997, 119, 1195-11501.

(12) McGarry, P.; Jockusch, S.; Fujiwara, Y.; Kaprinidis, N. A. and Turro, N. J.: "DMSO Solvent Induced Photochemistry in Highly Photostable Compounds. The Role of Intermolecular Hydrogen Bonding." J. Phys. Chem. A, 1997, 101, 764-767.

(11) Jockusch, S.; Timpe, H.-J.; Schnabel, W. and Turro, N. J.: "Photoinduced Energy and Electron Transfer between Ketone Triplets and Organic Dyes." J. Phys. Chem. A, 1997, 101, 440-445.

(10) Jockusch, S.; Timpe, H.-J.; Schnabel, W. and Turro, N. J.: "Photoreduction of Organic Dyes in Ketone Amine Systems." J. Photochem. Photobiol. A: Chem., 1996, 96, 129-136.

(9) Jockusch, S.; Lee, D.; Turro, N. J. and Leonard, E. F.: "Photoinactivation of Viruses: Adsorption of Methylene Blue, Thionine and Thiopyronine on Viruses." Proc. Nat. Acad. Sci. USA, 1996, 93, 7446-7451.

(8) Ottaviani, M. F.; Turro, N. J.; Jockusch, S. and Tomalia, D. A.: "Aggregational Process of the Positively Charged Nitroxide Surfactants - CTAC and CAT16 - in the Presence of Starburst Dendrimers: An EPR Study." Colloids and Surfaces, A, 1996, 115, 9-21.

(7) Ottaviani, M. F.; Turro, N. J.; Jockusch, S. and Tomalia, D. A.: "Characterization of Starburst Dendrimers by EPR. 3. Aggregational Process of a Positively Charged Nitroxide Surfactant." J. Phys. Chem., 1996, 100, 13675-13686.

(6) Jockusch, S.; Turro, N. J. and Tomalia, D. A.: "Aggregation of Organic Dyes on Starburst Dendrimers." J. Inf. Recording, 1996, 22, 427-433.

(5) Jockusch, S.; Turro, N. J. and Tomalia, D. A.: "Aggregation of Methylene Blue adsorbed on Starburst Dendrimers." Macromolecules, 1995, 28, 7416-7418.

(4) Timpe, H.-J.; Jockusch, S. and Koerner, K.: "Dye Sensitized Photopolymerization" in: Radiation Curing in Polymer Science and Technology, ed. by Fouassier, J. P. and Rabek, J. F.; Elsevier, Barking, U.K. , Vol.2, 1993, 575-601.

(3) Jockusch, S.; Timpe, H.-J.; Fischer, Ch. -H. and Schnabel, W.: "On the Photoreduction of Crystal Violet, Phenosafranine and Methylene Blue by Benzophenone." J. Photochem. Photobiol. A: Chem., 1992, 63, 217-226.

(2) Mueller, U.; Jockusch, S.; Haeusler, K.-G. and Timpe, H.-J.: "Photoinduced Crosslinking of Silicones. 8. Characterization of Silicone Acrylate Networks." Angew. Makromol. Chem., 1992, 200, 61-76.

(1) Mueller, U.; Jockusch, S. and Timpe, H.-J.: "Photocrosslinking of Silicones. VI. Photocrosslinking Kinetics of Silicone Acrylates and Methacrylates." J. Polym. Sci.; Part A: Polym. Chem., 1992, 30, 2755-2764.

 

 

 





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