Magnetische Resonanz
Der Arbeitskreis Weber
Über uns
Die Weber-Gruppe erforscht die meist kurzlebigen Radikale mit stationären und zeitauflösenden Methoden der magnetischen Resonanzspektroskopie. Radikale sind Moleküle mit ungepaarten Elektronenspins, die sowohl in der belebten wie unbelebten Materie eine wichtige Rolle spielen. Untersucht werden dabei Ladungs- und Energietransfer-Prozesse, die in Enzymreaktionen, der Photorezeption und auch im Hinblick auf die Photovoltaikforschung von essentieller Bedeutung sind.
Die Projekte des AK Weber fügen sich unmittelbar in die Forschungsschwerpunkte Enzyme und Wirkstoffe sowie Energie und Materialien der Fakultät für Chemie und Pharmazie ein.
Die Gruppe – Lehrstuhl Weber
Prof. Dr. Stefan Weber
Verwaltung
Team Lehre
Team Technik
PhD Students und PostDocs
Unsere Forschung
Unsere Forschung beschäftigt sich mit der Untersuchung kurzlebiger paramagnetischer Zustände (Radikale, Triplettzustände, Radikalpaare) in biologischen Systemen und Funktionsmaterialien.
Methoden und Verfahren
NMR und EPR
Die Kernspinresonanz (NMR, engl.: nuclear magnetic resonance) und die Elektronenspinresonanz (EPR, engl.: electron paramagnetic resonance) gehören zu den Methoden der magnetischen Resonanz und ermöglichen die Untersuchung magnetischer Eigenschaften und dynamischer Prozesse auf molekularer Ebene.
Beide Methoden beruhen auf der Ausrichtung magnetischer Dipolmomente von Elektronen- bzw. Kernspins in einem äußeren Magnetfeld. Durch die Einstrahlung elektromagnetischer Strahlung geeigneter Frequenz können Übergänge zwischen den verschiedenen Spinzuständen angeregt werden. Während bei der EPR Mikrowellenstrahlung, kommt bei der NMR Radiofrequenzstrahlung zum Einsatz.
In unserer Forschung setzen wir verschiedene EPR-Verfahren ein, darunter kontinuierliche (cw) und gepulste EPR, zeitaufgelöste Messungen sowie verschiedene Doppelresonanzmethoden. Diese Methoden ermöglichen es uns, elektronische Strukturen, Wechselwirkungen und Dynamiken paramagnetischer Systeme zu charakterisieren und insbesondere kurzlebige Zwischenzustände und Reaktionsprozesse zu untersuchen.
Im Bereich der NMR nutzen wir darüber hinaus das photo-CIDNP-Verfahren (photochemically induced dynamic nuclear polarization). Durch lichtinduzierte Prozesse kann dabei eine starke Verstärkung der NMR-Signale erreicht werden. Dies eröffnet neue Möglichkeiten, photochemische und photophysikalische Prozesse sowie die damit verbundenen molekularen Mechanismen mit hoher Empfindlichkeit zu untersuchen.
TA – Transiente Absorptionsspektroskopie (Blitzlichtphotolyse)
Die transiente Absorptionsspektroskopie (TA) ermöglicht die Untersuchung kurzlebiger, metastabiler Zustände und der Dynamik photochemischer Prozesse. Durch einen kurzen Lichtpuls hoher Intensität werden angeregte Zustände und kurzlebige Intermediate erzeugt, deren zeitabhängige Absorptionsänderungen spektroskopisch verfolgt werden. So lassen sich unter anderem Reaktionsmechanismen, Zwischenzustände und Geschwindigkeitskonstanten bestimmen.
Für die Probenanregung verwenden wir gepulste Laser. Die zeitaufgelöste Detektion erfolgt über einen Photomultiplier und ein schnelles Digitaloszilloskop und ermöglicht Zeitauflösungen im niedrigen Nanosekundenbereich.
Unser TA-Spektrometer LP 920 von Edinburgh Instruments ist mit einem Surelite-Lasersystem zur Probenanregung ausgestattet.
Publikationen des AK Weber
Keine Inhalte gefunden.
K. Kloiber, T. Heizmann, B. Lacombe, P. Thielert, M. Sellin, T. Schwandt, S. Richert, S. Weber, I. Krossing
Using xenon difluoride and 2 Li[Al{OC(CF3)3}4] as an oxidant: from organoxenonium intermediates to
(fluoro-)biphenyl radical cations
Chemical Science 17 (2026) 12385–12393
S. Panter, A. Ayekoi, B. Illarionov, J. Chen, A. Bacher, M. Fischer, S. Weber
Unraveling the 13C hyperfine structure of the 5-deazaflavin radical in solution using photo-CIDNP spectroscopy
ChemPhotoChem 10 (2026) e202500377
H. Matsuoka, G. Link, U. Heinen, O.G. Poluektov, L.M. Utschig, M.C. Thurnauer, S. Weber, G. Kothe
Nanosecond structure of radical pair intermediates from high-frequency quantum oscillations: insight into the QA·– to QB electron transfer step in purple bacterial photosynthesis
Journal of Physical Chemistry B 130 (2026) 5450–5459
A. Schmidt, M.J. Faber, A. Ayekoi, B. Illarionov, A. Bacher, M. Fischer, S. Weber
Fluorinated tryptophan derivatives for photo-CIDNP NMR
Journal of Physical Chemistry B 130 (2026) 7621–7633
T. Theiss, G. Musabirova, L. Gerhards, I.S. Anisimova, B.G.E. Zoller, T.N.H. Nguyen, D. Denisov, A. Schmidt, S. Panter, S. Weber, C. Tegenkamp, I.A. Solov’yov, J. Matysik, T. Gulder
Distance-dependence of photo-CIDNP in biomimetic tryptophan–flavin diads
Angewandte Chemie International Edition 64 (2025) Art. No. e202510116
Y. Oka, F. Quintes, Y. Yoshikawa, M. Fujiwara, K. Maeda, S. Weber, K. Inoue
Direct observation of long-lived radical pair between flavin and guanine in single- and double-stranded DNA
Communications Chemistry 8 (2025) Art. No. 203
M. Okasha, J. Chen, A. Ayekoi, E. Jacob, V. Radtke, A. Schmidt, A. Bacher, S. Weber, E. Schleicher
Linear free energy relationship between reduction potential and photoreduction rate: studies on Drosophila cryptochrome
FEBS Journal 292 (2025) 4254–4271.
A. Schmidt, A. Ayekoi, B. Illarionov, M. Fischer, A. Bacher, S. Weber
Transient 19F photo-CIDNP: a practical tool to distinguish intermediate radical species and determine isotropic hyperfine coupling constants of 19F nuclei
Journal of Chemical Physics 162 (2025) Art. No. 054204.
T. Quintes, S. Weber, S. Richert
Teacups, a Python package for the simulation of time-resolved EPR spectra of spin-polarized multi-spin systems
Journal of Physical Chemistry A 129 (2025) 3375–3388.
A. Schmidt, H. Schneider, B. Illarionov, A. Bacher, M. Fischer, S. Weber
Photo-CIDNP of solvent-exposed flavins in flavoproteins
Journal of Physical Chemistry Letters 16 (2025) 7058–7068.
A. Günter, S. Ciuti, L. Denkhaus, A. Sappler, L. Orian, S. Gerhardt, O. Einsle, S. Weber, M. Di Valentin, E. Schleicher
Small protein domains as potential spin labels for in vitro, cellular, and light-induced dipolar EPR spectroscopy
Journal of the American Chemical Society 147 (2025) 22473–22487.
J. Gravell, P.D.F. Murton, T.L. Pitcher, K.B. Henbest, J. Schmidt, M.M. Buffett, G. Moise, A.S. Gehrckens, D.R. Cubbin, A. Štuhec, L.M. Antill, O. Paré-Labrosse, M. Bassetto, G. Saberamoli, J. Xu, C. Langebrake, M. Liedvogel, E. Schleicher, S. Weber, R. Bartölke, H. Mouritsen, P.J. Hore, S.R. Mackenzie, C.R. Timmel
Spectroscopic characterization of radical pair photochemistry in nonmigratory avian cryptochromes: magnetic field effects in GgCry4a
Journal of the American Chemical Society 147 (2025) 24286–24298.
S. Panter, B. Illarionov, J. Chen, A. Bacher, M. Fischer, S. Weber
Investigation of 6,7,8-trimethyllumazine and its radicals by NMR and photo-CIDNP spectroscopy
Physical Chemistry Chemical Physics 27 (2025) 22911-22923. S.A. Chandler, A.S. Gehrckens, L.M.N. Shah, K.E. Buckton, G. Cao, N. Sen, T. Zollitsch, R. Rodriguez, I.A. Solov’yov, E. Schleicher, S. Weber, P.J. Hore, C.R. Timmel, S.R. Mackenzie, J.L.P. Benesh
Light-induced conformational switching and magnetic sensitivity of Drosophila cryptochrome
Structure 33 (2025) 1–14.
L.T. Kuhn, S. Weber, J. Bargon, T. Parella, M. Pérez-Trujillo
Hyperpolarization-enhanced NMR spectroscopy of unaltered biofluids using photo-CIDNP
Analytical Chemistry 96 (2024) 102–109.
S. Panter, A. Ayekoi, J. Tesche, J. Chen, B. Illarionov, A. Bacher, M. Fischer, S. Weber
Shining a spotlight on methyl groups: photochemically induced dynamic nuclear polarization spectroscopy of 5-deazariboflavin and its nor analogs
International Journal of Molecular Sciences 25 (2024) Art. No. 848.
J.M. Rall, L. Nork, T.A. Engesser, M. Mayländer, S. Weber, S. Richert, I. Krossing
From the iron pentacarbonyl cation to heteroleptic h6-arene carbonyls and bis-h6-arene cations
Chemistry – A European Journal 30 (2024) Art. No. e202400105.
T. Zhan, C. Jacoby, M. Jede, B. Knapp, S. Ferlaino, A. Günter, F. Drepper, M. Müller, S. Weber, M. Boll
Bacterial stigmasterol degradation involving radical flavin delta-24 desaturase and molybdenum-dependent C26 hydoxylase
Journal of Biological Chemistry 300 (2024) Art. No. 107243.
F. La-Rostami, A. Scharf, C. Albert, N. Wax, M. Creydt, B. Illarionov, A. Bacher, S. Weber, M. Fischer
Adaptive laboratory evolution of flavin functionality identifies dihydrolipoyl dehydrogenase as one of the critical points for the activity of 7,8-didemethyl-riboflavin as a surrogate for riboflavin in Escherichia coli
Molecules 29 (2024) Art. No. 5981.
L. Heidinger, K. Perez, T. Spatzal, O. Einsle, S. Weber, D.C. Rees, E. Schleicher
Analysis of early intermediate states of the nitrogenase reaction by regularization of EPR spectra
Nature Communications 15 (2024) Art. No. 4041.
S. Panter, J. Wörner, J. Chen, B. Illarionov, A. Bacher, M. Fischer, S. Weber
Insights into the photoswitch based on 5-deazaFMN and LOV2 from Avena sativa: a combined absorption and NMR spectroscopy study
Physical Chemistry Chemical Physics 26 (2024) 28884–28893.
C.S. Seelmann, S.G. Huwiler, M. Culka, M.J.F. Strampraad, T. Biskup, S. Weber, G.M. Ullmann, V. Schünemann, P.-L. Hagedoorn, A.J. Pierik, M. Boll
Enzymatic Birch reduction via hydrogen atom transfer at an aqua-tungsten-bis-metallopterin cofactor
ACS Catalysis 13 (2023) 8631–8641.
J. Wörner, S. Panter, B. Illarionov, A. Bacher, M. Fischer, S. Weber
Expanding reaction horizons: evidence of the 5-deazaflavin radical through photochemically induced dynamic nuclear polarization
Angewandte Chemie International Edition 62 (2023) Art. No. e202309334.
M. Sellin, M. Seiler, M. Mayländer, K. Kloiber, V. Radke, S. Weber, S. Richert, I. Krossing
Isolation, structural and physical characterization as well as reactivity of persistent acenium radical cation salts
Chemistry – A European Journal 29 (2023) Art. No. e202300909.
D. Kaur, B. Ferlez, P. Landry, T. Biskup, S. Weber, J.H. Golbeck, K.V. Lakshmi, A. van der Est
Electronic structure and energetics of a heterodimeric BChl g’/Chl a’ special pair generated by exposure of Heliomicrobium modesticaldum to dioxygen
Physical Chemistry Chemical Physics 25 (2023) 26894–26905.
S.G. Avsar, S. Repp, L. Dietel, A. Güngör, S. Weber, K. Ocakoglu, S. Nadupalli, E. Erdem
Competition between charge transfer and energy transfer: influence of intrinsic defects in ZnO nanocrystals on rhodamine-B dye color signals
Physical Review B 108 (2023) Art. No. L241401.
2022
T. Al Said, S. Weber, E. Schleicher
OOP-ESEEM spectroscopy: accuracies of distances of spin-correlated radical pairs in biomolecules
Frontiers in Molecular Biosciences 9 (2022) Art. No. 890826.
N. Pompe, B. Illarionov, M. Fischer, A. Bacher, S. Weber
Completing the picture: determination of 13C hyperfine coupling constants of flavin semiquinone radicals by photochemically induced dynamic nuclear polarization spectroscopy
Journal of Physical Chemistry Letters 13 (2022) 5160–5167.
2021
C. Einholz, D. Nohr, R. Rodriguez, A. Topitsch, M. Kern, J. Goldmann, E. Chileshe, M. Okasha, S. Weber, E. Schleicher
pH-dependence of signaling-state formation in Drosophila cryptochrome
Archives of Biochemistry and Biophysics 700 (2021) Art. No. 108787.
W. Masalha, K. Daka, J. Wörner, N. Pompe, S. Weber, D. Delev, M.T. Krüger, O. Schnell, J. Beck, D.H. Heiland, J. Grauvogel
Metabolic alterations in meningioma reflect the clinical course
BMC Cancer 21 (2021) Art. No. 211.
M. Hamada, T. Iwata, M. Fuki, H. Kandori, S. Weber, Y. Kobori
Orientations and water dynamics of photoinduced secondary charge-separated states for magnetoreception by cryptochrome
Communications Chemistry 4 (2021) Art. No. 141.
S. Kowarschik, J. Schöllkopf, T. Müller, S. Tian, J. Knerr, H. Bakker, S. Rein, M. Dong, S. Weber, R. Grosse, G. Schmidt
Yersinia pseudotuberculosis cytotoxic necrotizing factor interacts with glycosaminoglycans
FASEB Journal 35 (2021) Art. No. e21647.
J. Wörner, J. Chen, A. Bacher, S. Weber
Non-classical disproportionation revealed by photo-chemically induced dynamic nuclear polarization NMR
Magnetic Resonance 2 (2021) 281–290.
S. Nadupalli, S. Repp, S. Weber, E. Erdem
About defect phenomena in ZnO nanocrystals
Nanoscale 13 (2021) 9160–9171.
J. Xu, L.E. Jarocha, T. Zollitsch, M. Konowalczyk, K.B. Henbest, S. Richert, M.J. Golesworthy, J. Schmidt, V. Déjean, D.J.C. Sowood, M. Bassetto, J. Luo, J.R. Walton, J. Fleming, Y. Wei, T.L. Pitcher, G. Moise, M. Herrmann, H. Yin, H. Wu, R. Bartölke, S.J. Käsehagen, S. Horst, G. Dautaj, P.D.F. Murton, A.S. Gehrckens, Y. Chelliah, J.S. Takahashi, K.-W. Koch, S. Weber, I.A. Solov’yov, C. Xie, S.R. Mackenzie, C.R. Timmel, H. Mouritsen, P.J. Hore
Magnetic sensitivity of cryptochrome 4 from a migratory songbird
Nature 594 (2021) 535–540.
E. Schleicher, S. Rein, B. Illarionov, A. Lehmann, T. Al Said, S. Kacprzak, R. Bittl, A. Bacher, M. Fischer, S. Weber
Selective 13C labelling reveals the electronic structure of flavocoenzyme radicals
Scientific Reports 11 (2021) Art. No. 18234.
2020
M. Schorpp, T. Heizmann, M. Schmucker, S. Rein, S. Weber, I. Krossing
Synthesis and application of a perfluorinated ammoniumyl radical cation as a very strong deelectronator
Angewandte Chemie International Edition 59 (2020) 9453–9459.
D. Liu, A.M. El-Zohry, M. Taddei, C. Matt, L. Bussotti, Z. Wang, J. Zhao, O.F. Mohammed, M. Di Donato, S. Weber
Long-lived charge-transfer state induced by spin-orbit charge transfer intersystem crossing (SOCT-ISC) in a compact spiro electron donor/acceptor dyad
Angewandte Chemie International Edition 59 (2020) 11591–11599.
S. Ludwanowski, M. Ari, K. Parison, S. Kalthoum, P. Straub, N. Pompe, S. Weber, M. Walter, A. Walther
pH tuning of water-soluble arylazopyrazole photoswitches
Chemistry – A European Journal 26 (2020) 13203–13212.
M. Burger, S. Rein, S. Weber, P. Gräber, S. Kacprzak
Distance measurements in the F0F1-ATP synthase from E. coli using smFRET and PELDOR spectroscopy
European Biophysics Journal 49 (2020) 1–10.
M. Imran, A.M. El-Zohry, C. Matt, M. Taddei, S. Doria, L. Bussotti, P. Foggi, J. Zhao, M. Di Donato, O.F. Mohammed, S. Weber
Intersystem crossing via charge recombination in a perylene–naphthalimide compact electron donor/acceptor dyad
Journal of Materials Chemistry C 8 (2020) 8305–8319.
R. Brosi, B. Illarionov, L. Heidinger, R.-R. Kim, M. Fischer, S. Weber, A. Bacher, R. Bittl, E. Schleicher
Coupled methyl group rotation in FMN radicals revealed by selective deuterium labeling
Journal of Physical Chemistry B 124 (2020) 1678–1690.
M. Toufani, S. Kasap, A. Tufani, F. Bakan, S. Weber, E. Erdem
Synergy of nano-ZnO and 3D-graphene foam electrodes for asymmetric supercapacitor devices
Nanoscale 12 (2020) 12790–12800.
A.M. Rostas, L. Ledernez, L. Dietel, L. Heidinger, M. Bergmann, M. Altenburger, R. Bruch, G. Urban, E. Schleicher, S. Weber
Direct EPR detection of atomic nitrogen in an atmospheric nitrogen plasma jet
Physical Chemistry Chemical Physics 22 (2020) 3875–3882.
T. Hochstoeger, T. Al Said, D. Maestre, F. Walter, A. Vilceanu, M. Pedron, T.D. Cushion, W. Snider, S. Nimpf, G.C. Nordmann, L. Landler, N. Edelman, L. Kruppa, G. Dürnberger, K. Mechtler, S. Schuechner, E. Ogris, E.P. Malkemper, S. Weber, E. Schleicher, D.A. Keays
The biophysical, molecular, and anatomical landscape of pigeon CRY4: a candidate light-based quantal magnetosensor
Science Advances 6 (2020) Art.-No. eabb9110.
2019
J. Schröder, D. Himmel, D. Kratzert, V. Radtke, S. Richert, S. Weber, T. Böttcher
Isolation of a stable pyridine radical anion
Chemical Communications 55 (2019) 1322–1325.
P. Weis, D.C. Röhner, R. Prediger, B. Butschke, H. Scherer, S. Weber, I. Krossing
First experimental evidence for the elusive tetrahedral cations [EP3]+ (E = S, Se, Te) in the condensed phase
Chemical Science 10 (2019) 10779–10788.
A.B. Schmidt, J. Wörner, A. Pravdivtsev, S. Knecht, H. Scherer, S. Weber, J. Hennig, D. von Elverfeldt, J.-B. Hövener
Lifetime of parahydrogen in aqueous solutions and human blood
ChemPhysChem 20 (2019) 2408–2412.
M.M. Schwab, D. Himmel, S. Kacprzak, Z. Yassine, D. Kratzert, C. Felbek, S. Weber, I. Krossing
Nickel(I) arene complexes. Isolated cationic organometallic nickel(I) arene complexes
European Journal of Inorganic Chemistry (2019) 3309–3317.
S. Richert, J. Chen, N. Pompe, V. Radtke, B. Illarionov, M. Fischer, A. Bacher, S. Weber
Influence of the cofactor structure on the photophysical processes initiating signal transduction in a phototropin-derived LOV domain
Journal of Chemical Physics 151 (2019) Art.-No. 235102.
N. Pompe, J. Chen, B. Illarionov, S. Panter, M. Fischer, A. Bacher, S. Weber
Methyl groups matter: photo-CIDNP characterizations of the semiquinone radicals of FMN and demethylated FMN analogs
Journal of Chemical Physics 151 (2019) Art.-No. 235103.
M. Imran, A.A. Sukhanov, Z. Wang, A. Karatay, J. Zhao, Z. Mahmood, A. Elmali, V.K. Voronkova, M. Hayvali, Y.H. Xing, S. Weber
Electronic coupling and spin–orbit charge-transfer intersystem crossing in phenothiazine–perylene compact electron donor/acceptor dyads
Journal of Physical Chemistry C 123 (2019) 7010–7024.
D. Nohr, S. Weber, E. Schleicher
EPR spectroscopy on flavin radicals in flavoproteins
Methods in Enzymology 620 (2019) 251–275.
S. Weber, C. Timmel, A. van der Est
Guest Editorial. Molecular Physics
Molecular Physics 117 (2019) 2593.
K. Serrer, C. Matt, M. Sokolov, S. Kacprzak, E. Schleicher, S. Weber
Application of commercially available fluorophores as triplet spin probes in EPR spectroscopy
Molecular Physics 117 (2019) 2688–2699.
O. Berntsson, R. Rodriguez, L. Henry, M.R. Panman, A.J. Hughes, C. Einholz, S. Weber, J.A. Ihalainen, R. Henning, I. Kosheleva, E. Schleicher, S. Westenhoff
Photoactivation of Drosophila melanogaster cryptochrome through sequential conformational changes
Science Advances 5 (2019) Art.-No. eaaw1531.
2018
D. Kiefer, A. Giovannitti, H. Sun, T. Biskup, A. Hofmann, M. Koopmans, C. Cendra, S. Weber, L.J.A. Koster, E. Olsson, J. Rivnay, S. Fabiano, I. McCulloch, C. Müller
Enhanced n-doping efficiency of a naphthalenediimide-based copolymer through polar side chains for organic thermoelectrics
ACS Energy Letters 3 (2018) 278–285.
M. Schorpp, S. Rein, S. Weber, H. Scherer, I. Krossing
Guilty and charged: a stable solution of the hexamethylbenzene radical cation as a ligand forming oxidising agent
Chemical Communications 54 (2018) 10036–10039.
M.M. Schwab, D. Himmel, S. Kacprzak, V. Radtke, D. Kratzert, P. Weis, M. Wernet, A. Peter, Z. Yassine, D. Schmitz, E.W. Scheidt, W. Scherer, S. Weber, W. Feuerstein, F. Breher, A. Higelin, I. Krossing
Synthesis, characterisation and reactions of truly cationic NiI–phosphine complexes
Chemistry – A European Journal 24 (2018) 918–927.
S. Rein, P. Lewe, S.L. Andrade, S. Kacprzak, S. Weber
Global analysis of complex PELDOR time traces
Journal of Magnetic Resonance 295 (2018) 17–26.
A. Rostas, C. Einholz, B. Illarionov, L. Heidinger, T. Al Said, A. Bauss, M. Fischer, A. Bacher, S. Weber, E. Schleicher
Long-lived hydrated FMN radicals: EPR characterization and implications for catalytic variability in flavoproteins
Journal of the American Chemical Society 140 (2018) 16521–16527.
Y. Hou, T. Biskup, S. Rein, Z. Wang, L. Bussotti, N. Russo, P. Foggi, J. Zhao, M. Di Donato, G. Mazzone, S. Weber
Spin–orbit charge recombination intersystem crossing in phenothiazine–anthracene compact dyads: effect of molecular conformation on electronic coupling, electronic transitions, and electron spin polarizations of the triplet states
Journal of Physical Chemistry C 122 (2018) 27850–27865.
D.H. Heiland, A. Gaebelein, M. Börries, J. Wörner, N. Pompe, P. Franco, S. Heynckes, M. Bartholomae, D.Ó. hAilín, M.S. Carro, M. Prinz, S. Weber, I. Mader, D. Delev, O. Schnell
Microenvironment-derived regulation of HIF signaling drives transcriptional heterogeneity in glioblastoma multiforme
Molecular Cancer Research 16 (2018) 655–668.
S. Repp, E. Harputlu, S. Gurgen, M. Castellano, N. Kremer, N. Pompe, J. Wörner, A. Hoffmann, R. Thomann, F.M. Emen, S. Weber, K. Ocakoglu, E. Erdem
Synergetic effects of Fe3+ doped spinel Li4Ti5O12 nanoparticles on reduced graphene oxide for high surface electrode hybrid supercapacitors
Nanoscale 10 (2018) 1877–1884.
M.M. Schwab, D. Himmel, S. Kacprzak, V. Radtke, D. Kratzert, Z. Yassine, P. Weis, S. Weber, I. Krossing
Reactivity of [Ni(cod)2][Al(ORF)4] towards small molecules and elements
Zeitschrift für Anorganische und Allgemeine Chemie 644 (2018) 50–57.
Stefan Weber
Transient EPR
Chapter 10, in: EPR Spectroscopy: Fundamentals and Methods (D. Goldfarb, S. Stoll, Editors) 2018
John Wiley & Sons, Ltd. ISBN: 978-1-119-16299-5
2017
S. Sanctis, N. Koslowski, R. Hoffmann, C. Guhl, E. Erdem, S. Weber, J.J. Schneider
Toward an understanding of thin-film transistor performance in solution-processed amorphous zinc tin oxide (ZTO) thin films
ACS Applied Materials & Interfaces 9 (2017) 21328–21337.
D. Nohr, B. Paulus, R. Rodriguez, A. Okafuji, R. Bittl, E. Schleicher, S. Weber
Bestimmung des Radikal-Radikal-Abstands in lichtaktiven Proteinen im angeregten Zustand und dessen Bedeutung für die biologische Magnetorezeption
Angewandte Chemie 129 (2017) 8670–8674.
D. Nohr, B. Paulus, R. Rodriguez, A. Okafuji, R. Bittl, E. Schleicher, S. Weber
Determination of radical–radical distances in light-active proteins and their implication for biological magnetoreception
Angewandte Chemie International Edition 56 (2017) 8550–8554.
S. Weber
Transient EPR
eMagRes 6 (2017) 255–270.
S. Kacprzak, I. Njimona, A. Renz, J. Feng, E. Reijerse, W. Lubitz, N. Krauss, P. Scheerer, S. Nagano, T. Lamparter, S. Weber
Intersubunit distances in full-length, dimeric, bacterial phytochrome Agp1, as measured by pulsed electron-electron double resonance (PELDOR) between different spin label positions, remain unchanged upon photoconversion
Journal of Biological Chemistry 292 (2017) 7598–7606.
G. Brandariz-de-Pedro, D.J. Heyes, S.J.O. Hardman, M. Shanmugam, A.R. Jones, S. Weber, D. Nohr, N.S. Scrutton, A.J. Fielding
Direct evidence of an excited-state triplet species upon photoactivation of the chlorophyll precursor protochlorophyllide
Journal of Physical Chemistry Letters 8 (2017) 1219–1223.
I.-M. Lazar, A.M. Rostas, P.S. Straub, E. Schleicher, S. Weber, R. Mülhaupt
Simple covalent attachment of redox-active nitroxyl radicals to graphene via Diels-Alder cycloaddition
Macromolecular Chemistry and Physics 218 (2017) Art. No. 1700050 (8 pages).
D. Blüher, D. Laha, S. Thieme, A. Hofer, L. Eschen-Lippold, A. Masch, G. Balcke, I. Pavlovic, O. Nagel, A. Schonsky, R. Hinkelmann, J. Wörner, N. Parvin, R. Greiner, S. Weber, A. Tissier, M. Schutkowski, J. Lee, H. Jessen, G. Schaaf, U. Bonas
A 1-phytase type III effector interferes with plant hormone signaling
Nature Communications 8 (2017) Art. No. 2159 (14 pages).
D.H. Heiland, J. Wörner, J.G. Haaker, D. Delev, N. Pompe, B. Mercas, P. Franco, A. Gäbelein, S. Heynckes, D. Pfeifer, S. Weber, I. Mader, O. Schnell
The integrative metabolomic-transcriptomic landscape of glioblastome multiforme
Oncotarget 8 (2017) 49178–49190.
D.M.W. Sheppard, J. Li, K.B. Henbest, S.R.T. Neil, K. Maeda, J. Storey, E. Schleicher, T. Biskup, R. Rodriguez, S. Weber, P.J. Hore, C.R. Timmel, S.R. Mackenzie
Millitesla magnetic field effects on the photocycle of an animal cryptochrome
Scientific Reports 7 (2017) Art. No. 42228 (7 pages).
2016
A. Bateni, E. Erdem, S. Repp, S. Weber, M. Somer
Al-doped MgB2 materials studied using electron paramagnetic resonance and Raman spectroscopy
Applied Physics Letters 108 (2016) Art. No. 202601 (5 pages).
D. Nohr, S. Franz, R. Rodriguez, B. Paulus, L.-O. Essen, S. Weber, E. Schleicher
Extended electron-transfer in animal cryptochromes mediated by a tetrad of aromatic amino acids
Biophysical Journal 111 (2016) 301–311.
L. Heidinger, A.C. Kneuttinger, G. Kashiwazaki, S. Weber, T. Carell, E. Schleicher
Direct observation of a deoxyadenosyl radical in an active enzyme environment
FEBS Letters 590 (2016) 4489–4494.
H. Kaftelen, D.E. Kanar, S. Repp, S. Weber, E. Erdem
Investigation of MnO-doped sodium-potassium niobate ((K,Na)NbO3) ceramics by EPR and impedance spectroscopic methods
Ferroelectrics 494 (2016) 11–18.
M. Blömker, E. Erdem, S. Li, S. Weber, A. Klein, J. Rödel, T. Frömling
Defect structure of doped lead-free 0.9(Bi0.5Na0.5)TiO3–0.1(Bi0.5K0.5)TiO3 piezoceramics
Journal of the American Ceramics Society 99 (2016) 543–550.
S. Sharma, A.M. Rostas, L. Bordonali, N. MacKinnon, S. Weber, J.G. Korvink
Micro and nano patternable magnetic carbon
Journal of Applied Physics 120 (2016) Art. No. 235107 (10 pages).
S. Kühnhold-Pospischil, P. Saint-Cast, M. Hofmann, S. Weber, P. Jakes, R.-A. Eichel, J. Granwehr
A study on Si/Al2O3 paramagnetic point defects
Journal of Applied Physics 120 (2016) Art. No. 195304 (11 pages).
S.Z. Kiss, A.M. Rostas, L. Heidinger, N. Spengler, M.V. Meissner, N. MacKinnon, E. Schleicher, S. Weber, J.G. Korvink
A microwave resonator integrated on a polymer microfluidic chip
Journal of Magnetic Resonance 270 (2016) 169–175.
R.C. Hoffmann, S. Sanctis, E. Erdem, S. Weber, J.J. Schneider
Zinc diketonates as single source precursors for ZnO nanoparticles: microwave-assisted synthesis, electrophoretic deposition and field-effect transistor device properties
Journal of Materials Chemistry C 4 (2016) 7345–7352.
S. Repp, S. Weber, E. Erdem
Defect evolution of nonstoichiometric ZnO quantum dots
Journal of Physical Chemistry C 120 (2016) 25124–25130.
C.V. Pham, S. Repp, R. Thomann, M. Krueger, S. Weber, E. Erdem
Charge transfer and surface defect healing within ZnO nanoparticle decorated graphene hybrid materials
Nanoscale 8 (2016) 9682–9687.
D. Zeniieh, A.M. Rostas, E. Schleicher, L. Ledernez, S. Weber, G. Urban
The effect of low pressure plasma polymerization modes on the properties of the deposited plasma polymers
Plasma Processes and Polymers 13 (2016) 744–751.
2015
T. Biskup, M. Sommer, S. Rein, D.L. Meyer, M. Kohlstädt, U. Würfel, S. Weber
Ordering of PCDTBT revealed by time-resolved electron paramagnetic resonance spectroscopy of its triplet excitons
Angewandte Chemie International Edition 54 (2015) 7707–7710.
T. Biskup, M. Sommer, S. Rein, D.L. Meyer, M. Kohlstädt, U. Würfel, S. Weber
Zeitaufgelöste Elektronenspinresonanz-Spektroskopie an Triplett-Excitonen deckt Ordnung von PCDTBT auf
Angewandte Chemie 127 (2015) 7819–7822.
M.M. Schwab, D. Himmel, S. Kacprzak, D. Kratzert, V. Radtke, P. Weis, K. Ray, E.-W. Scheidt, W. Scherer, B. de Bruin, S. Weber, I. Krossing
[Ni(cod)2][Al(ORF)4], a source for naked nickel(I) chemistry
Angewandte Chemie International Edition 54 (2015) 14706–14709.
R. Fudim, J. Mehlhorn, T. Berthold, S. Weber, E. Schleicher, J.T.M. Kennis, T. Mathes
Photoinduced formation of flavin radicals in BLUF domains lacking the central glutamine
FEBS Journal 282 (2015) 3161–3174.
B. Paulus, C. Bajzath, F. Melin, L. Heidinger, V. Kromm, C. Herkersdorf, U. Benz, L. Mann, P. Stehle, P. Hellwig, S. Weber, E. Schleicher
Spectroscopic characterization of radicals and radical pairs in fruit fly cryptochrome – protonated and nonprotonated flavin radical-states
FEBS Journal 282 (2015) 3175–3189.
D. Nohr, R. Rodriguez, S. Weber, E. Schleicher
How can EPR spectroscopy help to unravel molecular mechanisms of flavin-dependent photoreceptors?
Frontiers in Molecular Biosciences 2 (2015) Art. No. 49 (16 pages).
A. Bateni, E. Erdem, S. Repp, S. Acar, I. Kokal, W. Häßler, S. Weber, M. Somer
Electron paramagnetic resonance and Raman spectroscopy studies on carbon-doped MgB2 superconductor nanomaterials
Journal of Applied Physics 117 (2015) Art. No. 153905 (7 pages).
B. Illarionov, F. Zhu, W. Eisenreich, A. Bacher, S. Weber, M. Fischer
Preparation of flavocoenzyme isotopologues by biotransformation of purines
Journal of Organic Chemistry 80 (2015) 2539–2544.
W. Eisenreich, M. Joshi, B. Illarionov, S. Kacprzak, M. Lukaschek, G. Kothe, N. Budisa, M. Fischer, A. Bacher, S. Weber
Strategy for enhancement of 13C-photo-CIDNP NMR spectra by exploiting fractional 13C-labeling of tryptophan
Journal of Physical Chemistry B 119 (2015) 13934–13943.
T. Weinert, S.G. Huwiler, J.W. Kung, S. Weidenweber, P. Hellwig, J.-J. Stärk, T. Biskup, S. Weber, J.J.H. Cotelesage, G.N. George, U. Ermler, M. Boll
Structural basis of enzymatic benzene ring reduction
Nature Chemical Biology 11 (2015) 586–591.
M.R. Lichtenthaler, F. Stahl, D. Kratzert, L. Heidinger, E. Schleicher, J. Hamann, D. Himmel, S. Weber, I. Krossing
Cationic cluster formation versus disproportionation of low-valent indium and gallium complexes of 2,2′-bipyridine
Nature Communications 6 (2015) Art. No. 8288 (9 pages).
R.C. Hoffmann, M. Kaloumenos, D. Spiehl, E. Erdem, S. Repp, S. Weber, J.J. Schneider
A microwave molecular solution based approach towards high-k-tantalum(V)oxide nanoparticles: synthesis, dielectric properties and electron paramagnetic resonance spectroscopic studies of their defect chemistry
Physical Chemistry Chemical Physics 17 (2015) 31801–31809.
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Interesse? Bewerbungen bitte an Frau Lesley Göbel (Lehrstuhl Hugel): lesley.goebel@physchem.uni-freiburg.de