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. Author manuscript; available in PMC: 2023 Nov 16.
Published in final edited form as: Adv Healthc Mater. 2023 Jun 30;12(27):e2301033. doi: 10.1002/adhm.202301033

Figure 2.

Figure 2.

Characterization of alginate-dopamine. A) The synthesis process of alginate-dopamine. B) 1H NMR spectra of alginate, dopamine and alginatedopamine. C) UV–Vis spectra of alginate-dopamine. D) FTIR spectra of alginate, dopamine and alginate-dopamine. E) Rheological properties of the alginate-dopamine hydrogels. The storage (G′) and loss (G″) moduli of the 2% (w/v) alginate-dopamine hydrogel and 4% (w/v) alginate-dopamine hydrogel at a frequency sweep mode are provided. F) The gelation photos of ALG-DA. G) SEM images of alginate-dopamine hydrogel. Scale bar, 100 μm.