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. 2018 May 21;10(5):551. doi: 10.3390/polym10050551

Figure 15.

Figure 15

(a) Chemical structures of the hyperbranched polymer with terminal alkynes and the functionalized polyhedral oligomeric silsesquioxane (POSS) as macro-monomers for thiol-yne cross-linking reaction. Reprinted with permission from [111]. Copyright 2014, John Wiley & Sons; (b) Synthetic procedure for hyaluronic acid-poly(ethylene glycol) (HA-PEG) hydrogel via Diels–Alder click reaction. HA was functionalized with multiple furan moieties and PEG was tethered with two maleimides.