Relaxation editing vr paramagnetic relaxation enhancement experiments - 13C CP-MAS NM
 

Relaxation editing vr paramagnetic relaxation enhancement experiments - 13C CP-MAS NMR

I am a beginner in NMR spectroscopy and I would like to learn more about relaxation editing experiments vs PRE. A colleague of mine is doing the 13C CP-MAS NMR experim. and he using cellulose II powder, regenerated cellulose and milled reg cellulose. We are interested in C4 resonance of cellulose II, good resolved resonance, to better understand the supramolecular structure of cellulose II. As experiments: long relaxation experiments - PRE with aqueous CuSO4 solution of certain concentration, does the CuSO4 sol conc has any effect on the experim? What is the difference between relaxation editing experiments and PRE?Thank you for your help.



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