Magnetism in high-resolution NMR probe design. I: General methods

MR based magnetic susceptibility measurements of 3D printing materials at 3 Tesla

“…Moreover, these were mixtures of various additives and curing agents which may also reflect as a difference to the measurements. Our values for PC and PP had a much larger difference with reported literature of about 1 ppm [17,19,20] and 0.4 ppm [19] respectively. For PP, as mentioned above this may be due to print imperfections, hence resulting in a larger error of the fit.…”

Limited-Sample NMR Using Solenoidal Microcoils, Perfluorocarbon Plugs, and Capillary Spinning

“…From this set of experiments, it is clear that the line widths improve from air-bracketed to Teflon-bracketed to FC-bracketed samples. The reported values for χ v of air, Teflon, FC-43, D 2 O, and fused silica are +0.38 × 10 -6 , −10.5 × 10 -6 , −8.2 × 10 -6 , −8.8 × 10 -6 , and −11.9 × 10 -6 , respectively (all values are converted to SI units). ,, These results are consistent with the reported values because bracketing plugs with χ v closest in value to that of the sample should result in the lowest line width. The line width in the spectrum from the FC-43-bracketed sample capillary with a 70% F obs is comparable to that of the infinite sample plug.…”

NMR Study of the Association of Propofol with Nonionic Surfactants

“…The hydrophobic non-EO CH 2 and CH 3 protons were thus shifted to low frequency considerably more than the relatively hydrophilic EO CH 2 protons were. This is consistent with the former being in contact with domains possessing a less negative magnetic susceptibility than that of D 2 O, which is expected of an aromatic compound like propofol …”