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. Author manuscript; available in PMC: 2018 Apr 28.
Published in final edited form as: Polym Chem. 2017 Mar 31;8(16):2552–2558. doi: 10.1039/C7PY00123A

Fig. 2.

Fig. 2

31P NMR spectra of phosphorylated chitosan (molecular structure shown above) prepared in (a) D2O and (b) 1:3 volumetric ratio of D2O to 50 mM NaOH. Numeric labels (1, 2, 3) indicate the associated phosphate group.