Fig. 1 | Nature Communications

Fig. 1

From: Adjacent cationic–aromatic sequences yield strong electrostatic adhesion of hydrogels in seawater

Fig. 1

Schematic illustration of design strategy. a Cation–π complex-aided free-radical polymerization to synthesize poly(cation-adj-π) with adjacent cationic–aromatic sequences and its supramolecular hydrogel showing electrostatic adhesion in seawater (adj is short for adjacent and π for aromatic monomer). The counter ions and salt ions are not included for simplicity. b Chemical structures of four typical monomers are used in this study. Cationic monomer: 2-(acryloyloxy)ethyl trimethylammonium chloride (ATAC), 2-(methacryloyloxy)ethyl trimethylammonium chloride (MATAC); and aromatic monomers: 2-phenoxyethyl acrylate (PEA), 2-phenoxyethyl methacrylate (PEMA)

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