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Selective homonuclear 2D J-resolved spectroscopy

Abstract : Selective 2D J-resolved spectroscopy delivers 2D spectra where exclusively homonuclear couplings to a selected spin feature as doublets along the indirect dimension, facilitating their measurement. The original experiment, SERF, uses frequency-selective pulses in order to manipulate the evolution of particular couplings. This basic principle has been improved and expanded upon in many follow-up experiments over the years. Experiments using the Zangger–Sterk or PSYCHE pulse sequence elements have resulted in variants called G-SERF and PSYCHEDELIC, respectively, and allow observation of a wider spectral bandwidth and decoupling of spins with close chemical shifts. Also, strategies to achieve high-resolution full absorption mode line shapes have been proposed. Finally, homonuclear decoupling methods have been introduced to suppress couplings to nonselected spins in the spectrum and thus avoid spectral overlap. Rather than providing a historic and comprehensive overview of the many different variations of SERF, this article presents the selective 2D J-resolved spectroscopy as a modular experiment, where these various features can be introduced to fit a particular situation. Advantages and drawbacks of each variation are discussed.
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Submitted on : Thursday, August 19, 2021 - 6:52:28 PM
Last modification on : Wednesday, January 19, 2022 - 2:40:02 PM
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Davy Sinnaeve. Selective homonuclear 2D J-resolved spectroscopy. eMagRes, Wiley, 2020, 9 (4), pp.267-282. ⟨10.1002/9780470034590.emrstm1544⟩. ⟨hal-03322837⟩



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