Dynamic nuclear polarization at 40 kHz magic angle spinning
| العنوان: | Dynamic nuclear polarization at 40 kHz magic angle spinning |
|---|---|
| المؤلفون: | Lyndon Emsley, Sachin Rama Chaudhari, Christian Reiter, Daniel L. Silverio, Pierrick Berruyer, Moreno Lelli, Christophe Copéret, Anne Lesage, Frank Engelke, David Gajan |
| المساهمون: | Solid-State NMR Methods for Materials - Méthodes de RMN à l'état solide pour les matériaux, Institut des Sciences Analytiques (ISA), Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Bruker BioSpin GmbH, D-76287 Rheinstetten, Germany, affiliation inconnue, Department of Chemistry and Applied Biosciences [ETH Zürich], Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Magnetic Resonance Center, Università degli Studi di Firenze = University of Florence [Firenze] (UNIFI), Ecole Polytechnique Fédérale de Lausanne (EPFL) |
| المصدر: | Physical Chemistry Chemical Physics, 18 (15) Physical Chemistry Chemical Physics Physical Chemistry Chemical Physics, Royal Society of Chemistry, 2016, 18 (15), pp.10616-10622. ⟨10.1039/C6CP00839A⟩ |
| بيانات النشر: | Royal Society of Chemistry, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | 010405 organic chemistry, Chemistry, Analytical chemistry, General Physics and Astronomy, Nuclear magnetic resonance spectroscopy, Solid material, 010402 general chemistry, Polarization (waves), 01 natural sciences, NMR, 0104 chemical sciences, MAS, Dynamic nuclear polarization, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, magic angle spinning, Magic angle spinning, DNP, Physical and Theoretical Chemistry, Physics and Astronomy (all), Physical and Theoretical Chemistry, SOLID-STATE NMR, SN-BETA ZEOLITE, THEORETICAL ASPECTS, IRRADIATED POLYETHYLENES, CORRELATION SPECTROSCOPY, ABSOLUTE SENSITIVITY, NITROXIDE BIRADICALS, MAGNETIC-RESONANCE, MEMBRANE-PROTEINS, HIGH-FREQUENCY DNP, Spinning, Signal amplification, Coherence (physics) |
| الوصف: | DNP-enhanced solid-state NMR spectroscopy under magic angle spinning (MAS) is rapidly developing into a powerful analytical tool to investigate the structure of a wide range of solid materials, because it provides unsurpassed sensitivity gains. Most developments and applications of DNP MAS NMR were so far reported at moderate spinning frequencies (up to 14 kHz using 3.2 mm rotors). Here, using a 1.3 mm MAS DNP probe operating at 18.8 T and ∼100 K, we show that signal amplification factors can be increased by up to a factor two when using smaller volume rotors as compared to 3.2 mm rotors, and report enhancements of around 60 over a range of sample spinning rates from 10 to 40 kHz. Spinning at 40 kHz is also shown to increase 29Si coherence lifetimes by a factor three as compared to 10 kHz, substantially increasing sensitivity in CPMG type experiments. The contribution of quenching effects to the overall sensitivity gain at very fast MAS is evaluated, and applications are reported on a functionalised mesostructured organic–inorganic material. Physical Chemistry Chemical Physics, 18 (15) ISSN:1463-9084 ISSN:1463-9076 |
| وصف الملف: | application/application/pdf |
| اللغة: | English |
| تدمد: | 1463-9084 1463-9076 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5775d4b5ae74b77cac8fdf7cbc4be29Test https://hdl.handle.net/20.500.11850/116095Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....d5775d4b5ae74b77cac8fdf7cbc4be29 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14639084 14639076 |
|---|