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Applying Excitation Sculpting to Construct Singly and Doubly Selective 1D NMR Experiments by Michael J. Gradwell; Heide Kogelberg; Thomas A. Frenkiel is a Chemistry article available to read on EtoBox.

What is Applying Excitation Sculpting to Construct Singly and Doubly Selective 1D NMR Experiments about?

The 1 H NMR spectra of biological macromolecules fre-sequences. Excitation sculpting consists of applying the double-pulsed field-gradient spin-echo (DPFGSE) ( 14) se-quently exhibit regions of severe overlap, making it necessary to acquire spectra with the highest possible resolution quence -G 1 -S-G 1 -G 2 -S-G 2 -to a system with transverse magnetization, where S is some pulse or train of and to use two-dimensional (2D) or three-dimensional (3D) techniques to obtain unambiguous information. Several pulses and G 1 and G 2 are gradient pulses with unrelated amplitudes. In the original analysis of excitation sculpting groups have shown that in this situation substantial savings of spectrometer time can be made by replacing the 2D and ( 14), it was elegantly demonstrated that the net effect of this sequence is simply to return the transverse magnetization 3D experiments with their selective, one-dimensional (1D) counterparts (1-8). Such experiments use selective excita-to its starting place with its intensity scaled by a factor P 2 , where the frequency-dependent factor P is the degree to tion sequences in place of the indirect frequency dimensions of the analogous multidimensional

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Author

Michael J. Gradwell; Heide Kogelberg; Thomas A. Frenkiel

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 1090-7807)

Published

1997

Language

EN

Field

Chemistry (Physical Sciences)