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2023
While most fast 2D NMR strategies rely on short recycling delay or on the sparse sampling of the indirect dimension, ultrafast 2D NMR represents a change of paradigm by carrying out a spatial encoding of the resonance frequencies whereby spins located at different positions undergo distinct evolution periods within the same transient.
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While most fast 2D NMR strategies rely on short recycling delay or on the sparse sampling of the indirect dimension, ultrafast 2D NMR represents a change of paradigm by carrying out a spatial encoding of the resonance frequencies whereby spins located at different positions undergo distinct evolution periods within the same transient.
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Some aspects of quantitative 2D NMR
Journal of Magnetic Resonance, 2005We have studied the application of 2D HSQC for quantitative measurements and propose some improvements to the previously published Q-HSQC method. Application of CPMG-INEPT for polarization transfer period suppresses the evolution of J(HH), and thus corrects the shape of the cross-peaks. The better cross-peak shape makes phase correction and integration
Harri, Koskela +2 more
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Elucidation of Lignin Structure by Quantitative 2D NMR
Chemistry – A European Journal, 2011AbstractQuick quantitative HSQC (QQ‐HSQC) was applied to quantitative evaluation of different inter‐unit linkages in an array of milled softwood and hardwood and technical lignins by using the guaiacyl C2 and syringyl C2–C6 signals as internal standards.
SETTE, MARCO +2 more
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Journal of Magnetic Resonance (1969), 1987
In two-dimensional NMR experiments on biological macromolecules, one is frequently compelled to acquire fewer points in t, than ideally required. This truncation of the signal in t, optimizes sensitivity at the expense of resolution (I) and may lead to a great loss of information through merging of cross peaks, cancellation between antiphase peaks, and
Jennifer C.J Barna, Ernest D Laue
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In two-dimensional NMR experiments on biological macromolecules, one is frequently compelled to acquire fewer points in t, than ideally required. This truncation of the signal in t, optimizes sensitivity at the expense of resolution (I) and may lead to a great loss of information through merging of cross peaks, cancellation between antiphase peaks, and
Jennifer C.J Barna, Ernest D Laue
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Fast 2D NMR and Hyperpolarization
2023This chapter presents an overview of both the methodology and applications of fast two-dimensional (2D) NMR using nuclear spin hyperpolarization. Fast 2D NMR methods extend the information available from NMR experiments through spin correlations while allowing the utilization of large signals from hyperpolarized spins for the study of fast processes ...
Anshul Gautam, Christian Hilty
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Automated Tools for the Analysis of 1D-NMR and 2D-NMR Spectra
2019Nuclear magnetic resonance (NMR) spectroscopy is becoming increasingly automated. Most modern NMR spectrometers are now equipped with auto-tune/auto-match probes along with automated locking and shimming systems. Likewise, more and more instruments, especially for NMR-based metabolomics applications, are equipped with automated sample changers.
Matthias, Lipfert +3 more
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Quantitative 2D liquid‐state NMR
Magnetic Resonance in Chemistry, 2014Two‐dimensional (2D) liquid‐state NMR has a very high potential to simultaneously determine the absolute concentration of small molecules in complex mixtures, thanks to its capacity to separate overlapping resonances. However, it suffers from two main drawbacks that probably explain its relatively late development.
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Applications of 2D NMR Spectroscopy to Carbohydrates
1990Two-dimensional high resolution nuclear magnetic resonance spectroscopy (2D NMR) is a powerful tool for determining the structure and conformation of carbohydrates in solution. Applications to carbohydrate problems have followed closely on the heels of development of sophisticated two dimensional — and now three dimensional — pulse sequences (Hoffman ...
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NMR Analysis of Unknowns: An Introduction to 2D NMR Spectroscopy
Journal of Chemical Education, 2005Second-year organic chemistry students analyze and compare the spectral data of three unknown ketones (2-heptanone, 3-heptanone, and 4-heptanone). Students acquire one-dimensional proton and carbon NMR data for each unknown and make signal assignments based on chemical shifts, integration values, and splitting patterns of signals.
David E. Alonso, Steven E. Warren
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1986
With the use of two-dimensional (2D) nuclear magnetic resonance (NMR) experiments (Aue et al., 1976; Bax, 1982), the potentialities of NMR for studies of biopolymers can be greatly enhanced. This paper describes 2D NMR experiments which are commonly used for work with proteins and nucleic acids.
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With the use of two-dimensional (2D) nuclear magnetic resonance (NMR) experiments (Aue et al., 1976; Bax, 1982), the potentialities of NMR for studies of biopolymers can be greatly enhanced. This paper describes 2D NMR experiments which are commonly used for work with proteins and nucleic acids.
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