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. Author manuscript; available in PMC: 2020 Oct 21.
Published in final edited form as: ACS Appl Bio Mater. 2019 Sep 26;2(10):4667–4674. doi: 10.1021/acsabm.9b00747

Figure 4.

Figure 4.

NMR spectroscopy shows loss of aliphatic side chains in UMNP indicating that polymerization has occurred. (A) Stacked NMR spectrum of SMNPS, UMNP, and dopamine. (B) Dopamine hydrochloride dissolved in D2O yielded two triplets at 2.77 and 3.13 δ corresponding to the aliphatic side chains.