Figure 1.
Characterization of the conjugates by 1H NMR and FT-IR. 1H NMR spectra (CDCl3) and FT-IR spectra (ATR mode) of A) conjugate 5 (NH2-PEG3.5KDa-NH-DTPA) and B) conjugates 6 (PLGA18KDa-NH-PEG3.5KDa-NH-DTPA).
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