Spin-noise-detected two-dimensional NMR at triple sensitivity

Beschreibung

This talk focuses on our groups’ latest publication on two-dimensional spin noise spectroscopy. The presentation reveals the key findings along the way to a fully us- able two-dimensional experiment and gives insight into some of the problems encoun- tered during the development. The abstract of the underlying paper is as follows: The A major breakthrough in speed and sensitivity of 2D spin-noise-detected NMR is achieved owed to a new acquisition and processing scheme called “double block usage” (DBU) which utilizes each recorded noise block in two independent cross cor- relations. The mixing, evolution and acquisition periods are repeated head-to-tail without any recovery delays and well-known building blocks of multi-dimensional NMR (constant-time evolution and quadrature detection in the indirect dimension as well as pulsed field gradients) provide further enhancement and artifact suppression. Modified timing of the receiver electronics eliminates spurious random excitation. We achieve a threefold sensitivity increase over the original snHMQC experiment (K. Chandra et al., J. Phys. Chem. Lett. 2013, 4, 3853) and demonstrate the feasibility of spin-noise-detected long-range correlation.

Zeitraum	28 März 2018
Ereignistitel	BISSL (Bilateral Impromptu Symposium (Stockholm-Linz) on NMR Spectroscopy
Veranstaltungstyp	Konferenz
Ort	ÖsterreichAuf Karte anzeigen