Picchio, Matías L.Minudri, DanielaMantione, DanieleCriado-Gonzalez, MiryamGuzmán-González, GregorioSchmarsow, RuthMüller, Alejandro J.Tomé, Liliana C.Minari, Roque J.Mecerreyes, David2022-09-052022-09-052022-062168-0485PURE: 46300276PURE UUID: ef88af4e-88da-4b13-9950-61eec6c45c95Scopus: 85133674596WOS: 000819241900001PubMed: 35783106PubMedCentral: PMC9241144ORCID: /0000-0002-9827-627X/work/151887391http://hdl.handle.net/10362/143504This work was supported by Marie Sklodowska-Curie Research and Innovation Staff Exchanges (RISE) under Grant Agreement No. 823989 “IONBIKE”. The financial supports received from CONICET and ANPCyT (Argentina) are also gratefully acknowledged. ). Publisher Copyright: © 2022 American Chemical Society. All rights reserved.Natural deep eutectics solvents (NADES), owing to their high solvation capacity and nontoxicity, are actively being sought for many technological applications. Herein, we report a series of novel NADES based on choline chloride and plant-derived polyphenols. Most of the obtained phenolic NADES have a wide liquid range and high thermal stability above 150 °C. Among them, small-sized polyphenols, like pyrogallol, vanillyl alcohol, or gentisic acid, lead to low-viscosity liquids with ionic conductivities in the order of 10-3S cm-1at room temperature. Interestingly, polyphenols possess valuable properties as therapeutic agents, antioxidants, adhesives, or redox-active compounds, among others. Thus, we evaluated the potential of these novel NADES for two applications: bioadhesives and corrosion protection. The mixture of choline chloride-vanillyl alcohol (2:3 mol ratio) and gelatin resulted in a highly adhesive viscoelastic liquid (adhesive stress ≈ 135 kPa), affording shear thinning behavior. Furthermore, choline chloride-tannic acid (20:1) showed an extraordinary ability to coordinate iron ions, reaching excellent corrosion inhibitive efficiencies in mild steel protection.86608006engCatechol chemistryCorrosion inhibitorsEutectic mixturesMetal-ligand coordinationPolyphenolsTissue adhesivesGeneral ChemistryEnvironmental ChemistryGeneral Chemical EngineeringRenewable Energy, Sustainability and the EnvironmentSDG 7 - Affordable and Clean Energyjournal article10.1021/acssuschemeng.2c01976https://www.scopus.com/pages/publications/85133674596