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. Author manuscript; available in PMC: 2020 Aug 28.
Published in final edited form as: Polym Chem. 2019 Jul 8;10(32):4428–4440. doi: 10.1039/C9PY00447E

Figure 5. Functional group conversion during hydrogel formation.

Figure 5.

a) MAS 1H NMR spectra obtained before and after 5 min of light exposure for hydrogels polymerized with visible light (70 mWcm−2 at 455 nm, 4 mM LAP) or 365nm (10 mWcm−2, 2 mM LAP) (control), focusing on chemical shifts associated with norbornene end groups. b) Norbornene conversion (% reacted norbornene) over time was quantified by subtracting the integration of these peaks (normalized to t=0) from 1 for spectra obtained after different irradiation times.