scholarly journals Atomic-Level Structure Characterization of Biomass Pre- and Post-Lignin Treatment by Dynamic Nuclear Polarization-Enhanced Solid-State NMR

2017 ◽  
Vol 121 (3) ◽  
pp. 623-630 ◽  
Author(s):  
Frédéric A. Perras ◽  
Hao Luo ◽  
Ximing Zhang ◽  
Nathan S. Mosier ◽  
Marek Pruski ◽  
...  
Keyword(s):  
Solid State ◽  
Dynamic Nuclear Polarization ◽  
Solid State Nmr ◽  
Nuclear Polarization ◽  
Level Structure ◽  
Atomic Level ◽  
Structure Characterization

scholarly journals Characterization of Pharmaceutical Cocrystals and Salts by Dynamic Nuclear Polarization-Enhanced Solid-State NMR Spectroscopy

2018 ◽  
Vol 18 (4) ◽  
pp. 2588-2601 ◽  
Author(s):  
Li Zhao ◽  
Michael P. Hanrahan ◽  
Paroma Chakravarty ◽  
Antonio G. DiPasquale ◽  
Lauren E. Sirois ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Dynamic Nuclear Polarization ◽  
Solid State Nmr ◽  
Nuclear Polarization ◽  
Pharmaceutical Cocrystals ◽  
Solid State Nmr Spectroscopy

scholarly journals 35Cl dynamic nuclear polarization solid-state NMR of active pharmaceutical ingredients

2016 ◽  
Vol 18 (37) ◽  
pp. 25893-25904 ◽  
Author(s):  
David A. Hirsh ◽  
Aaron J. Rossini ◽  
Lyndon Emsley ◽  
Robert W. Schurko
Keyword(s):  
Solid State ◽  
Dynamic Nuclear Polarization ◽  
Solid State Nmr ◽  
Nuclear Polarization ◽  
Molecular Level ◽  
Level Structure ◽  
Dosage Forms ◽  
Active Pharmaceutical Ingredients ◽  
Pharmaceutical Ingredients

In this work, we show how to obtain efficient dynamic nuclear polarization (DNP) enhanced 35Cl solid-state NMR (SSNMR) spectra at 9.4 T and demonstrate how they can be used to characterize the molecular-level structure of hydrochloride salts of active pharmaceutical ingredients (APIs) in both bulk and low wt% API dosage forms.

scholarly journals The Atomic-Level Structure of Cementitious Calcium Aluminate Silicate Hydrate Determined by NMR

2021 ◽  
Vol 75 (4) ◽  
pp. 272-275
Author(s):  
Pinelopi Moutzouri ◽  
Lyndon Emsley
Keyword(s):  
Solid State ◽  
Calcium Aluminate ◽  
First Principles ◽  
Solid State Nmr ◽  
Nuclear Polarization ◽  
Level Structure ◽  
Atomic Level ◽  
Two Dimensional ◽  
First Principles Calculations ◽  
Nmr Signals

We review our recent paper which resolves the long-standing dilemma of the location and nature of the six-fold coordinated aluminum in calcium aluminate silicate hydrate (C-A-S-H) samples. First principles calculations predict that at high Ca:Si and H2O ratios, aluminum is incorporated into the bridging sites of the linear silicate chains and that the stable coordination number is six. We confirm this hypothesis experimentally by one- and two-dimensional dynamic nuclear polarization enhanced 27 Al and 29 Si solid-state NMR experiments in which we correlate the distinctive six-fold coordinated aluminum NMR signal at 5 ppm to 29 Si NMR signals from silicates in C-A-S-H.

A comprehensive approach for the characterization of porous polymers using 13C and 15N dynamic nuclear polarization NMR spectroscopy

2020 ◽  
Vol 22 (40) ◽  
pp. 23307-23314
Author(s):  
Sven Grätz ◽  
Marcos de Olivera Junior ◽  
Torsten Gutmann ◽  
Lars Borchardt
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Dynamic Nuclear Polarization ◽  
Solid State Nmr ◽  
Nuclear Polarization ◽  
Comprehensive Approach ◽  
Porous Polymers ◽  
Nmr Techniques

DNP enhanced solid-state NMR techniques are presented as powerful tools to characterize amorphous porous polymers that are of insoluble nature.

scholarly journals Dynamic Nuclear Polarization / solid-state NMR of membranes. Thermal effects and sample geometry

2019 ◽  
Vol 100 ◽  
pp. 70-76 ◽  
Author(s):  
Evgeniy Sergeevich Salnikov ◽  
Fabien Aussenac ◽  
Sebastian Abel ◽  
Armin Purea ◽  
Paul Tordo ◽  
...  
Keyword(s):  
Solid State ◽  
Dynamic Nuclear Polarization ◽  
Thermal Effects ◽  
Solid State Nmr ◽  
Nuclear Polarization ◽  
Sample Geometry

scholarly journals Solid-State NMR/Dynamic Nuclear Polarization of Polypeptides in Planar Supported Lipid Bilayers

2015 ◽  
Vol 119 (46) ◽  
pp. 14574-14583 ◽  
Author(s):  
Evgeniy S. Salnikov ◽  
Hiba Sarrouj ◽  
Christian Reiter ◽  
Christopher Aisenbrey ◽  
Armin Purea ◽  
...  
Keyword(s):  
Solid State ◽  
Lipid Bilayers ◽  
Dynamic Nuclear Polarization ◽  
Solid State Nmr ◽  
Nuclear Polarization ◽  
Supported Lipid Bilayers
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