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The original selective 1D NOESY using excitation sculpting technique. NOE's as small as 0.02% can be measured, while effects of strong J-couplings largely eliminated.

Here is one of the pulse sequence variants:

<pulse title="double pulsed field gradient spin echo 1D NOESY pulse sequence">
anchors: @a     @b0,b,b1     @c     @d0,d,d1   @e    @f0,f,f1    @g------h    @k
disp:   6@a       5@b       5@c       5@d     5@e      7@f      3@g         10@k
time: d1 @a   d    @b   d    @c   d    @d  d   @e tau1  @f tau2  @g------h aq @k
rf H:  90@a     shp@b=p1            shp@d=p2 90@e    shp@f     90@g  acq@h-----k
pfg z:        g1@b0 g1@b1          g2@d0 g2@d1     g4@f0  g5@f1

delay d1: hide=true
delay d: label=\delta
delay tau1: label=mix
delay tau2: label=D hide=true
rfchan H: label=^1H
pfgchan z: label=Grad.\ z

gradient g1: strength=70 label=g_1
gradient g2: strength=30 label=g_2
gradient g4: strength=50 label=g_m
gradient g5: strength=-50 label=\overline{g_m}

phase phi1: label=\phi_1
pulse p1: phase=phi1

phase phi2: label=\phi_2
pulse p2: phase=phi2


</pulse>

Shaped pulse within the mixing time serves  to suppress zero-quantum coherences arising in systems with strong scalar couplings. 

DPFGSE element is contained between first two 90<sup>o</sup> pulses. This element achieves high-quality narrow band selective excitation by refocusing magnetization within the bandwidth of selective pulses and dephasing magnetization outside that bandwidth.

In this variant of the pulse sequence all shaped pulses are implemented as the same selective inversion pulse. Shaped pulse in the mixing time is applied on-off resonance. Additional details of PFG delay implementation are described in the paper.
{{nmr-experiment}}
===References===
<biblio>
#shaka97 bibtex=@article{stott1997odn,
  title={One-Dimensional NOE Experiments Using Pulsed Field Gradients}}
  author={Stott, K. and Keeler, J. and Van, Q.N. and Shaka, A.J.},
  journal={Journal of Magnetic Resonance},
  volume={125},
  number={2},
  pages={302--324},
  year={1997},
  publisher={Elsevier},
  url={http://dx.doi.org/doi:10.1006/jmre.1997.1110}
}
</biblio>

[[Category:Small molecule NMR experiments]] 
[[Category:NOESY Experiments]]
[[Category:Pulse sequence drawing]]
[[Category:NMR experiment]]

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