Solid-State NMR Spectroscopic Studies of Propylphosphonic Acid Functionalized SBA-15 Mesoporous Silica: Characterization of Hydrogen-Bonding Interactions

2013 ◽  
Vol 2013 (13) ◽  
pp. 2350-2361 ◽  
Author(s):  
Nicolas Bibent ◽  
Thibault Charpentier ◽  
Sabine Devautour-Vinot ◽  
Ahmad Mehdi ◽  
Philippe Gaveau ◽  
...  
Toxins ◽  
2011 ◽  
Vol 3 (10) ◽  
pp. 1310-1331 ◽  
Author(s):  
Praveen Chaudhary ◽  
Roxanne A. Shank ◽  
Tony Montina ◽  
James T. Goettel ◽  
Nora A. Foroud ◽  
...  

2009 ◽  
Vol 114 (2) ◽  
pp. 752-759 ◽  
Author(s):  
Raphaël Bongur ◽  
Nicolas Marx ◽  
Claire Marichal ◽  
Bénédicte Lebeau ◽  
Philippe Guarilloff

2011 ◽  
Vol 359 (1) ◽  
pp. 86-94 ◽  
Author(s):  
Hui-Hsu Gavin Tsai ◽  
Po-Jui Chiu ◽  
Guang-Liang Jheng ◽  
Chun-Chiang Ting ◽  
Yu-Chi Pan ◽  
...  

2017 ◽  
Vol 73 (3) ◽  
pp. 168-175 ◽  
Author(s):  
Hannah E. Kerr ◽  
Lorna K. Softley ◽  
Kuthuru Suresh ◽  
Paul Hodgkinson ◽  
Ivana Radosavljevic Evans

Naproxen (NPX) is a nonsteroidal anti-inflammatory drug with pain- and fever-relieving properties, currently marketed in the sodium salt form to overcome solubility problems; however, alternative solutions for improving its solubility across all pH values are desirable. NPX is suitable for cocrystal formation, with hydrogen-bonding possibilities via the COOH group. The crystal structure is presented of a 1:1 cocrystal of NPX with picolinamide as a coformer [systematic name: (S)-2-(6-methoxynaphthalen-2-yl)propanoic acid–pyridine-2-carboxamide (1/1), C14H14O3·C6H6N2O]. The pharmaceutically relevant physical properties were investigated and the intrinsic dissolution rate was found to be essentially the same as that of commercial naproxen. An NMR crystallography approach was used to investigate the H-atom positions in the two crystallographically unique COOH–CONH hydrogen-bonded dimers. 1H solid-state NMR distinguished the two carboxyl protons, despite the very similar crystallographic environments. The nature of the hydrogen bonding was confirmed by solid-state NMR and density functional theory calculations.


2004 ◽  
Vol 10 (22) ◽  
pp. 5689-5696 ◽  
Author(s):  
Bob Grünberg ◽  
Thomas Emmler ◽  
Egbert Gedat ◽  
Ilja Shenderovich ◽  
Gerhard H. Findenegg ◽  
...  

2008 ◽  
Vol 20 (6) ◽  
pp. 2412-2422 ◽  
Author(s):  
Hsien-Ming Kao ◽  
Chia-Hsiu Liao ◽  
Tzu-Ti Hung ◽  
Yu-Chi Pan ◽  
Anthony S. T. Chiang

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1207
Author(s):  
Gabrielle Foran ◽  
Nina Verdier ◽  
David Lepage ◽  
Cédric Malveau ◽  
Nicolas Dupré ◽  
...  

Solid-state NMR spectroscopy is an established experimental technique which is used for the characterization of structural and dynamic properties of materials in their native state. Many types of solid-state NMR experiments have been used to characterize both lithium-based and sodium-based solid polymer and polymer–ceramic hybrid electrolyte materials. This review describes several solid-state NMR experiments that are commonly employed in the analysis of these systems: pulse field gradient NMR, electrophoretic NMR, variable temperature T1 relaxation, T2 relaxation and linewidth analysis, exchange spectroscopy, cross polarization, Rotational Echo Double Resonance, and isotope enrichment. In this review, each technique is introduced with a short description of the pulse sequence, and examples of experiments that have been performed in real solid-state polymer and/or hybrid electrolyte systems are provided. The results and conclusions of these experiments are discussed to inform readers of the strengths and weaknesses of each technique when applied to polymer and hybrid electrolyte systems. It is anticipated that this review may be used to aid in the selection of solid-state NMR experiments for the analysis of these systems.


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