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. 2022 May 5;14:122. doi: 10.1007/s40820-022-00865-x

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Fig. 2 — Structural characterization of the PSO and UV–PSO precursors: a, c ¹H NMR spectra; b, d ¹³C NMR spectra; e DPC thermograms of UV–PSO with different photoinitiator concentrations; and f conversion percentage of acrylic group at different curing times (inset with FT-IR spectra)