title: Innovative Poly(Ionic Liquid)s by the Polymerization of Deep Eutectic Monomers.
abstract: The incorporation of ionic liquid (IL) chemistry into functional polymers has extended the properties and applications of polyelectrolytes. However, ILs are expensive due to the presence of fluorinated anions or complicated synthetic steps which limit their technological viability. Here, we show a new family of poly(ionic liquid)s (PILs) which are based in cheap and renewable chemicals and involves facile synthetic approaches. Thus, deep eutectic monomers (DEMs) are prepared for the first time by using quaternary ammonium compounds and various hydrogen bond donors such as citric acid, terephthalic acid or an amidoxime. The deep eutectic formation is made through a simple mixing of the ingredients. Differential scanning calorimetry, nuclear magnetic resonance (NMR) and computational studies reveal the formation of the DEMs due to the ionic interactions. The resulting DEMs are liquid which facilitates their polymerization using mild photopolymerization or polycondensation strategies. Spectroscopic characterizations reveal the successful formation of the polymers. By this way, a new family of PILs can be synthesized which can be used for different applications. As an example, the polymers show promising performance as solid CO2 sorbents. Altogether the deep eutectic monomer route can lead to non-toxic, cheap and easy-to-prepare alternatives to current PILs for different applications.
authors.affiliation: POLYMAT, University of the Basque Country UPV/EHU, Avda. Tolosa 72, 20018, San Sebastian, Spain.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Isik
authors.affiliation: POLYMAT, University of the Basque Country UPV/EHU, Avda. Tolosa 72, 20018, San Sebastian, Spain.
authors.forename: Fernando
authors.initials: F
authors.lastname: Ruiperez
authors.affiliation: POLYMAT, University of the Basque Country UPV/EHU, Avda. Tolosa 72, 20018, San Sebastian, Spain.
authors.forename: Haritz
authors.initials: H
authors.lastname: Sardon
authors.affiliation: POLYMAT, University of the Basque Country UPV/EHU, Avda. Tolosa 72, 20018, San Sebastian, Spain.
authors.forename: Alba
authors.initials: A
authors.lastname: Gonzalez
authors.affiliation: POLYMAT, University of the Basque Country UPV/EHU, Avda. Tolosa 72, 20018, San Sebastian, Spain.|Department of Chemistry, School of Natural Sciences (SNS), National University of Sciences and Technology (NUST), Islamabad, 44000, Pakistan.
authors.forename: Sonia
authors.initials: S
authors.lastname: Zulfiqar
authors.affiliation: POLYMAT, University of the Basque Country UPV/EHU, Avda. Tolosa 72, 20018, San Sebastian, Spain.|IKERBASQUE, Basque Foundation for Science, E-48011, Bilbao, Spain.
authors.forename: David
authors.initials: D
authors.lastname: Mecerreyes
mesh_terms: D052578:Ionic Liquids / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D058105:Polymerization; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry; D000644:Quaternary Ammonium Compounds / Q000737:chemistry
chemical_list: D052578:Ionic Liquids; D011108:Polymers; D000644:Quaternary Ammonium Compounds
keywords: CO2 capture; deep eutectic solvent; photopolymerization; poly(ionic liquid)s