Polyoxometalate-controlled oxidative formation of bioinspired polydopamine hydrogels
Year: 2026
Type: preprint
Abstract: Polyoxometalates (POMs) have been extensively explored as enzyme-mimetic catalysts capable of peroxidase-like peroxide-driven reactions. Specifically, transition metal-substituted POMs provide a molecular platform for tunable reactivity and kinetic control. Here, we use a titanium-doped Keggin polyoxomolybdate [(TiOH)PMo11O39]4- {TiOH} to crosslink a dopamine-functionalized alginate hydrogel in the presence of hydrogen peroxide under mild conditions which would otherwise prevent polymer formation. Tuning of the hydrogel rheological properties is possible by molecular-level reaction control. Experimental and theoretical studies are combined for comprehensive insight into the reaction mechanism of the catalytically active species.
Source: ChemRxiv
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7223377668