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Tiefenwirkung: Dynamische Kernpolarisation unter Rotation im magischen Winkel (MAS‐DNP) in einem starken Magnetfeld erhöht die Empfindlichkeit der Festkörper‐NMR‐Spektroskopie, jedoch nur für protonierte Oberflächen. Direkte 29Si‐DNP unter Verwendung des Diradikals TOTAPOL (siehe Bild) umgeht diese Einschränkung; sie verstärkt NMR‐Signale von 29Si‐Atomen unter der Oberfläche von mesoporösem Siliciumoxid...
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