Theoretical and practical aspects of Pure Shift Yielded by Chirp Excitation (PSYCHE) NMR spectroscopy have been discussed and the effects and importance of the experimental parameters highlighted, along with some recent improvements that enhance the spectral purity of PSYCHE spectra.
[U. of Ottawa NMR Facility Blog] Pure Shift 1H NMR - PSYCHE
Pure Shift 1H NMR - PSYCHE
Much effort has been directed to obtain broadband 1H decoupled 1H NMR spectra. The subject has been reviewed recently.1 One technique used to obtain such spectra is the pseudo-2D Zangger - Sterk method2,3 based on a selective refocusing pulse applied simultaneously with a weak field gradient centered in the t1 evolution period allowing all chemical shifts to be measured at the same time but from different slices of the column of sample in the NMR tube. For each resonance, the coupling from all of the coupling partners is refocused. The data are collected...
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01-21-2017 12:57 PM
Journal Highlight: 14N Solid-state NMR spectroscopy of amino acids
Journal Highlight: 14N Solid-state NMR spectroscopy of amino acids
http://www.spectroscopynow.com/common/images/thumbnails/15950714de8.jpg14N Ultra-wideline solid-state NMR spectra were obtained for 16 naturally occurring amino acids and four related derivatives by using the WURST–CPMG pulse sequence and frequency-stepped techniques.
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01-03-2017 01:47 AM
Journal Highlight: 14N Solid-state NMR spectroscopy of amino acids
Journal Highlight: 14N Solid-state NMR spectroscopy of amino acids
http://www.spectroscopynow.com/common/images/thumbnails/15950714de8.jpgManual grinding of Anopheles gambiae Giles and Aedes albopictus mosquitoes at the adult and larval developmental stages was compared to automated homogenization for protein profiling by MALDI-TOF MS.
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12-30-2016 04:53 PM
Journal Highlight: Quantitative online NMR spectroscopy in a nutshell
Journal Highlight: Quantitative online NMR spectroscopy in a nutshell
http://www.spectroscopynow.com/common/images/thumbnails/155a67a8bff.jpgThis paper compiles the most important aspects of quantitative process NMR spectroscopy in complex multicomponent mixtures and provides examples.
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07-04-2016 10:42 AM
Journal Highlight: Membrane proteins in their native habitat as seen by solid-state NMR spectroscopy
Journal Highlight: Membrane proteins in their native habitat as seen by solid-state NMR spectroscopy
http://www.spectroscopynow.com/common/images/thumbnails/14fff98e0e1.jpgRecent progress in the solid-state NMR spectroscopy of membrane proteins within a cellular membrane has been reviewed, along with requirements for sample preparation.
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09-28-2015 06:31 PM
Journal Highlight: Examination of amber and related materials by NMR spectroscopy
Journal Highlight: Examination of amber and related materials by NMR spectroscopy
http://www.spectroscopynow.com/common/images/thumbnails/14aaaa23abe.jpgThe solid-state 13C and solution 1H NMR spectra of fossilized resins (ambers) has generated five groupings of materials based on spectral characteristics.
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01-03-2015 12:53 PM
Journal Highlight: Utilizing NMR and EPR spectroscopy to probe the role of copper in prion diseases
Journal Highlight: Utilizing NMR and EPR spectroscopy to probe the role of copper in prion diseases
http://www.spectroscopynow.com/common/images/thumbnails/13e5065f06a.jpgCurrent research on the role of copper in the conformational changes associated with prion diseases are reviewed with emphasis on the latest applications of NMR and EPR spectroscopy to probe the interactions of copper with prion proteins.
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04-29-2013 06:02 PM
Journal Highlight: Determination of free fatty acids in edible oils by 1H NMR spectroscopy
Journal Highlight: Determination of free fatty acids in edible oils by 1H NMR spectroscopy
http://www.spectroscopynow.com/common/images/thumbnails/13c10b7ddda.jpgA novel proton NMR assay for the determination of free fatty acids in edible oils is a suitable alternative to the acid value method.
Source: Spectroscopynow.com
Journal Highlight: PSYCHE Pure shift NMR spectroscopy
Theoretical and practical aspects of Pure Shift Yielded by Chirp Excitation (PSYCHE) NMR spectroscopy have been discussed and the effects and importance of the experimental parameters highlighted, along with some recent improvements that enhance the spectral purity of PSYCHE spectra.
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