Brønsted acidic sites on catalyst surfaces are observed by 17O dynamic nuclear polarization-enhanced NMR spectroscopy, which hyperpolarizes nuclei by microwave-induced saturation of electrons. In their Communication (DOI: 10.1002/anie.201704032), M. Pruski et al. report the measurement of O-H distances with sub-picometer precision. The length of the O-H bond is directly related to the Brønsted acidity of the sites and is also a reporter of the formation of intermolecular hydrogen-bonding interactions.
Journal Highlight: The new face of isotopic NMR at natural abundance
Journal Highlight: The new face of isotopic NMR at natural abundance
http://www.spectroscopynow.com/common/images/thumbnails/15a8f2d5562.jpgThe main concepts, definitions, applications and improvements of NMR-based isotope analysis at natural abundance have been reviewed.
Read the rest at Spectroscopynow.com
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03-06-2017 01:20 PM
Natural Abundance (17)O DNP Two-Dimensional and Surface-Enhanced NMR Spectroscopy
From The DNP-NMR Blog:
Natural Abundance (17)O DNP Two-Dimensional and Surface-Enhanced NMR Spectroscopy
Perras, F.A., T. Kobayashi, and M. Pruski, Natural Abundance (17)O DNP Two-Dimensional and Surface-Enhanced NMR Spectroscopy. J Am Chem Soc, 2015. 137(26): p. 8336-9.
http://www.ncbi.nlm.nih.gov/pubmed/26098846
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09-28-2015 06:31 PM
[NMR paper] Mapping monoclonal antibody structure by 2D 13C NMR at natural abundance.
Mapping monoclonal antibody structure by 2D 13C NMR at natural abundance.
http://www.bionmr.com//www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--pubs.acs.org-images-pubmed-acspubs.jpg Related Articles Mapping monoclonal antibody structure by 2D 13C NMR at natural abundance.
Anal Chem. 2015 Apr 7;87(7):3556-61
Authors: Arbogast LW, Brinson RG, Marino JP
Abstract
Monoclonal antibodies (mAbs) represent an important and rapidly growing class of biotherapeutics. Correct folding of a mAb is critical for drug efficacy, while misfolding...
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09-19-2015 02:53 PM
Natural Abundance 17O DNP Two-Dimensional and Surface-Enhanced NMR Spectroscopy
Natural Abundance 17O DNP Two-Dimensional and Surface-Enhanced NMR Spectroscopy
Fre?de?ric A. Perras, Takeshi Kobayashi and Marek Pruski
http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/0/jacsat.ahead-of-print/jacs.5b03905/20150629/images/medium/ja-2015-03905b_0003.gif
Journal of the American Chemical Society
DOI: 10.1021/jacs.5b03905
http://feeds.feedburner.com/~ff/acs/jacsat?d=yIl2AUoC8zA
http://feeds.feedburner.com/~r/acs/jacsat/~4/2XY9E0YdGEg
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06-29-2015 07:21 PM
17O NMR Gives Unprecedented Insights into the Structure of Supported Catalysts and Their Interaction with the Silica Carrier
17O NMR Gives Unprecedented Insights into the Structure of Supported Catalysts and Their Interaction with the Silica Carrier
Nicolas Merle, Julien Tre?bosc, Anne Baudouin, Iker Del Rosal, Laurent Maron, Kai Szeto, Marie Genelot, Andre? Mortreux, Mostafa Taoufik, Laurent Delevoye and Re?gis M. Gauvin
http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/0/jacsat.ahead-of-print/ja301085m/aop/images/medium/ja-2012-01085m_0017.gif
Journal of the American Chemical Society
DOI: 10.1021/ja301085m
http://feeds.feedburner.com/~ff/acs/jacsat?d=yIl2AUoC8zA ...
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05-25-2012 07:14 PM
[NMR paper] 1H- and natural abundance 15N-NMR studies of a derivative of a rabies glycoprotein fr
1H- and natural abundance 15N-NMR studies of a derivative of a rabies glycoprotein fragment.
Related Articles 1H- and natural abundance 15N-NMR studies of a derivative of a rabies glycoprotein fragment.
Biopolymers. 1991 May;31(6):713-23
Authors: Molinari H, Consonni R, Pegna M, Zetta L, Neri P, Niccolai N, Bonci A, Lozzi L, Rustici M, Scarselli M
Using a combination of one- and two-dimensional methods, 1H- and 15N-nmr spectroscopy has been employed to perform the complete assignment and the structural determination of the immunogenic...
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08-21-2010 11:16 PM
[NMR paper] Assignment of the natural abundance 13C spectrum of proteins using 13C 1H-detected he
Assignment of the natural abundance 13C spectrum of proteins using 13C 1H-detected heteronuclear multiple-bond correlation NMR spectroscopy: structural information and stereospecific assignments from two- and three-bond carbon-hydrogen coupling constants.
Related Articles Assignment of the natural abundance 13C spectrum of proteins using 13C 1H-detected heteronuclear multiple-bond correlation NMR spectroscopy: structural information and stereospecific assignments from two- and three-bond carbon-hydrogen coupling constants.
Biochemistry. 1991 Oct 29;30(43):10457-66
...
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08-21-2010 11:12 PM
[NMR paper] Assignment of the natural abundance 13C spectrum of proteins using 13C 1H-detected he
Assignment of the natural abundance 13C spectrum of proteins using 13C 1H-detected heteronuclear multiple-bond correlation NMR spectroscopy: structural information and stereospecific assignments from two- and three-bond carbon-hydrogen coupling constants.
Related Articles Assignment of the natural abundance 13C spectrum of proteins using 13C 1H-detected heteronuclear multiple-bond correlation NMR spectroscopy: structural information and stereospecific assignments from two- and three-bond carbon-hydrogen coupling constants.
Biochemistry. 1991 Oct 29;30(43):10457-66
...