title: Tuning the LCST and UCST thermoresponsive behavior of poly(N,N-dimethylaminoethyl methacrylate) by electrostatic interactions with trivalent metal hexacyano anions and copolymerization.
abstract: Poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) has been reported to show both upper critical solution temperature (UCST) and lower critical solution temperature (LCST) behavior in presence of trivalent metal hexacyano anions, which is attractive for the development of smart materials. In this communication, the influence of the double thermoresponsive behavior of PDMAEMA driven by electrostatic interactions is investigated by comparing systems with [Co(CN)6 ](3-) , [Fe(CN)6 ](3-) , and [Cr(CN)6 ](3-) as trivalent anions. Furthermore, tuning of double thermoresponsive behavior of PDMAEMA by incorporating hydrophilic or hydrophobic comonomers is also discussed in the presence of [Fe(CN)6 ](3-) as trivalent ion.
authors.affiliation: Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000, Gent, Belgium.
authors.forename: Qilu
authors.initials: Q
authors.lastname: Zhang
authors.forename: Filippo
authors.initials: F
authors.lastname: Tosi
authors.forename: Sibel
authors.initials: S
authors.lastname: Üǧdüler
authors.forename: Samarendra
authors.initials: S
authors.lastname: Maji
authors.forename: Richard
authors.initials: R
authors.lastname: Hoogenboom
mesh_terms: D000838:Anions / Q000737:chemistry; D003486:Cyanides / Q000737:chemistry*; D008670:Metals / Q000737:chemistry*; D008689:Methacrylates / Q000138:chemical synthesis / Q000737:chemistry*; D009757:Nylons / Q000138:chemical synthesis / Q000737:chemistry*; D058105:Polymerization; D055672:Static Electricity; D013696:Temperature; D013816:Thermodynamics
chemical_list: D000838:Anions; D003486:Cyanides; D008670:Metals; D008689:Methacrylates; D009757:Nylons; C407037:poly(2-(dimethylamino)ethyl methacrylate)
keywords: lower critical solution temperature (LCST); metal-containing polymers; reversible addition-fragmentation chain transfer (RAFT) polymerization; thermoresponsive polymers; upper critical solution temperature (UCST)