Zobrazeno 1 - 10
of 14
pro vyhledávání: '"René Tschaggelar"'
Publikováno v:
Angewandte Chemie. International Edition, 60 (7)
Identification and quantification of redox‐active centers at relevant conditions for catalysis is pivotal to understand reaction mechanisms and requires development of advanced operando methods. Herein, we demonstrate operando EPR spectroscopy as a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b3a1423778f27148a948d21b85eaf3a
https://hdl.handle.net/20.500.11850/451265
https://hdl.handle.net/20.500.11850/451265
Autor:
Jörg Fischer, Mikhail Agrachev, Jörg Forrer, Rene Tschaggelar, Oliver Oberhänsli, Gunnar Jeschke
Publikováno v:
CHIMIA, Vol 78, Iss 5 (2024)
Electron paramagnetic resonance (EPR) spectroscopy is a powerful tool for in situ/operando tracking of catalytic reactions that involve paramagnetic species either as a catalyst (e.g. transition metal ions or defects), reaction intermediates (radical
Externí odkaz:
https://doaj.org/article/e4b421023401412bab923918d49e5e5e
Publikováno v:
Journal of Magnetic Resonance, 289
The g factor of paramagnetic defects in commercial high performance carbon fibers was determined by a double resonance experiment based on the Overhauser shift due to hyperfine coupled protons. Our carbon fibers exhibit a single, narrow and perfectly
Publikováno v:
Polymer Degradation and Stability. 144:497-507
Formation of radicals in a poly(dimethylsiloxane) (PDMS) elastomer upon 172 nm vacuum-UV (VUV) irradiation was investigated by electron paramagnetic resonance spectroscopy (EPR). Kinetics of radical buildup and decay was investigated under varying co
Autor:
Oliver Oberhänsli, Gunnar Jeschke, Frauke D. Breitgoff, René Tschaggelar, Mian Qi, Adelheid Godt
Publikováno v:
Applied Magnetic Resonance, 48 (11-12)
The emerging technology of ultra-wide-band spectrometers in electron paramagnetic resonance—enabled by recent technological advances—provides the means for new experimental schemes, a broader range of samples, and huge gains in measurement time.
Publikováno v:
Angewandte Chemie International Edition. 60:3314-3314
Publikováno v:
Angewandte Chemie. 133:3354-3354
Publikováno v:
Journal of Magnetic Resonance. 230:27-39
We demonstrate that adiabatic and fast passage ultra-wideband (UWB) pulses can achieve inversion over several hundreds of MHz and thus enhance the measurement sensitivity, as shown by two selected experiments. Technically, frequency-swept pulses are
Autor:
Petra Lueders, Maxim Yulikov, Gunnar Jeschke, Marcus A. Hemminga, Heidrun Jäger, Sahand Razzaghi, René Tschaggelar
Publikováno v:
Molecular Physics, 111(18-19), 2824-2833
Molecular Physics, 111 (18-19)
MOLECULAR PHYSICS
Molecular Physics 111 (2013) 18-19
Molecular Physics, 111 (18-19)
MOLECULAR PHYSICS
Molecular Physics 111 (2013) 18-19
Molecular Physics, 111 (18-19)
ISSN:0026-8976
ISSN:1362-3028
ISSN:0026-8976
ISSN:1362-3028
Publikováno v:
Journal of Magnetic Resonance. 222:34-43
We demonstrate the application of continuous wave dynamic nuclear polarization (DNP) at 0.35 T for site-specific water accessibility studies on spin-labeled membrane proteins at concentrations in the 10–100 μM range. The DNP effects at such low co