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Browsing by Subject "Dynamic nuclear polarization"

Browsing by Subject "Dynamic nuclear polarization"

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    Natural Abundance 15N NMR by Dynamic Nuclear Polarization: Fast Analysis of Binding Sites of a Novel Amine-Carboxyl-Linked Immobilized Dirhodium Catalyst 
    Gutmann, Torsten; Liu, Jiquan; Rothermel, Niels; Xu, Yeping; Jaumann, Eva; Werner, Mayke; Breitzke, Hergen; Sigurdsson, Snorri; Buntkowsky, Gerd (Wiley, 2015-01-23)
    A novel heterogeneous dirhodium catalyst has been synthesized. This stable catalyst is constructed from dirhodium acetate dimer (Rh2(OAc)4) units, which are covalently linked to amine‐ and carboxyl‐bifunctionalized mesoporous silica (SBA‐15NH2COOH). ...
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    On the Limited Stability of BDPA Radicals 
    Mandal, Sucharita; Sigurdsson, Snorri (Wiley, 2020-05-12)
    1,3‐Bis(diphenylene)‐2‐phenylallyl (BDPA)‐based radicals are of interest as polarizing agents for dynamic nuclear polarization (DNP). For this purpose, a BDPA‐nitroxide biradical, employing a phosphodiester linkage, was synthesized. Contrary to what ...
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    Pulsed EPR dipolar spectroscopy at Q- and G-band on a trityl biradical 
    Akhmetzyanov, D.; Schöps, P.; Marko, A.; Kunjir, N. C.; Sigurdsson, Snorri; Prisner, Thomas F. (Royal Society of Chemistry (RSC), 2015)
    Pulsed electron paramagnetic resonance (EPR) spectroscopy is a valuable technique for the precise determination of distances between paramagnetic spin labels that are covalently attached to macromolecules. Nitroxides have commonly been utilised as ...