Highly Efficient Polarizing Agents for MAS-DNP of Proton-Dense Molecular Solids.
Highly Efficient Polarizing Agents for MAS-DNP of Proton-Dense Molecular Solids.
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质子致密分子固体MAS-DNP的高效极化剂。
DOI:
10.1002/anie.202114103
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发表时间:
2022-03-14
期刊:
影响因子:
--
通讯作者:
De Paëpe G
中科院分区:
文献类型:
--
作者:
Harrabi R;Halbritter T;Aussenac F;Dakhlaoui O;van Tol J;Damodaran KK;Lee D;Paul S;Hediger S;Mentink-Vigier F;Sigurdsson ST;De Paëpe G
Efficiently hyperpolarizing proton-dense molecular solids through Dynamic Nuclear Polarization (DNP) solid-state NMR is still an unmet challenge. Polarizing agents (PAs) developed so far do not perform well on proton-rich systems, such as organic microcrystals and biomolecular assemblies. Herein we introduce a new PA, cAsymPol-POK, and report outstanding hyperpolarization efficiency on 12.76 kDa U-13C,15N-labeled LecA protein and pharmaceutical drugs at high magnetic fields (up to 18.8 T) and fast MAS frequencies (up to 40 kHz). The performance of cAsymPol-POK is rationalized by MAS-DNP simulations combined with Electron Paramagnetic Resonance (EPR), Density Functional Theory (DFT) and Molecular Dynamics (MD). This work shows that this new biradical is compatible with challenging biomolecular applications and unlocks the rapid acquisition of 13C-13C and 15N-13C correlations of pharmaceutical drugs at natural isotopic abundance, which are key experiments for structure determination. A new polarizing agent is introduced to efficiently polarize proton-dense solids through Dynamic Nuclear Polarization (DNP) ssNMR. This work shows that this new biradical can be used on organic microcrystals and biomolecular assemblies at high field and fast MAS. It notably unlocks the rapid acquisition of 13C-13C and 15N-13C correlations of pharmaceutical drugs at natural isotopic abundance, which are key experiments for structure determination.
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影响因子:
1
作者:
Barnes, A. B.;De Paepe, G.;van der Wel, P. C. A.;Hu, K. -N.;Joo, C. -G.;Bajaj, V. S.;Mak-Jurkauskas, M. L.;Sirigiri, J. R.;Herzfeld, J.;Temkin, R. J.;Griffin, R. G.
通讯作者:
Griffin, R. G.
影响因子:
--
作者:
Hediger, Sabine;Lee, Daniel;De Paepe, Gael
通讯作者:
De Paepe, Gael
影响因子:
4.4
作者:
Kristiansen, Per Eugen;Carravetta, Marina;Levitt, Malcolm H.
通讯作者:
Levitt, Malcolm H.
影响因子:
15
作者:
Lesage, A;Charmont, P;Emsley, L
通讯作者:
Emsley, L
DOI:
10.1039/c6cp00839a
发表时间:
2016-04-21
期刊:
Physical chemistry chemical physics : PCCP
影响因子:
--
作者:
Chaudhari SR;Berruyer P;Gajan D;Reiter C;Engelke F;Silverio DL;Copéret C;Lelli M;Lesage A;Emsley L
通讯作者:
Emsley L