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TítuloImportance of outer sphere and aggregation phenomena in the relaxation properties of phosphonated gadolinium complexes with potential applications as MRI contrast agents

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Academic year: 2020

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Figure 1. Top: Evolution of the absorption spectra of a solution of L 4  (c=8.5×10 −5  M, 0.01 M TRIS/HCl, pH 7.0) upon  addition of TbCl 3 ⋅6H 2 O (inset: evolution of the absorbance at 265 nm)
Table 2 summarizes  the  newly  determined  stability  constants  obtained  for L 2  and L 3 ,  together  with  those  previously  reported  for L 4
Figure 2. pLn III  values for La III  (square), Nd III  (circle) and Er III  (triangles) complexes as a function of the number of  phosphonates borne by L 2 , L 3  and L 4
Figure 4. Top:  31 P-{H} NMR spectra of LuL 4  recorded in D 2 O solution at different temperatures (pD 10.9);
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