title: Gels and threads: mussel-inspired one-pot route to advanced responsive materials.
abstract: An inexpensive one-pot route to self-healing hydrogels with pH-tunable modulus is presented. Hydrogels were formed by reacting tannic acid, trivalent metal ions and polyallylamine. Below pH 8 the hydrogels were supramolecular while above, covalent cross-linking strengthened the hydrogels. From concentrated mixtures, threads were spun, acting as water sensitive mechanical locks.
authors.affiliation: Department of Chemistry and iNANO, Gustav Wieds Vej 14, DK-8000 Aarhus, Denmark. hbirkedal@chem.au.dk.
authors.forename: M
authors.initials: M
authors.lastname: Krogsgaard
authors.forename: A
authors.initials: A
authors.lastname: Andersen
authors.forename: H
authors.initials: H
authors.lastname: Birkedal
mesh_terms: D000268:Adhesiveness; D000818:Animals; D040761:Biomimetic Materials / Q000138:chemical synthesis* / Q000737:chemistry; D049872:Bivalvia / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D020100:Hydrogels / Q000138:chemical synthesis* / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D015394:Molecular Structure; D011073:Polyamines / Q000737:chemistry*; D013634:Tannins / Q000737:chemistry*
chemical_list: D005290:Ferric Compounds; D020100:Hydrogels; D011073:Polyamines; D013634:Tannins; C063994:polyallylamine