title: Elaboration of thermoresponsive supramolecular diblock copolymers in water from complementary CBPQT4+ and TTF end-functionalized polymers.
abstract: A well-defined poly(N-isopropyl acrylamide) 1 incorporating at one termini a cyclobis(paraquat-p-phenylene) (CBPQT(4+)) recognition unit is prepared via a RAFT polymerization followed by a copper-catalyzed azide-alkyne cycloaddition (CuAAC). (1)H NMR (1D, DOSY), UV-vis and ITC experiments reveal that polymer 1 is able of forming effective host-guest complexes with tetrathiafulvalene (TTF) end-functionalized polymers in water, thereby leading to the formation of non-covalently-linked double-hydrophilic block copolymers. The effect of the temperature on both the LCST phase transition of 1 and its complexes and on CBPQT(4+)/TTF host-guest interactions is investigated.
authors.affiliation: UMET (UMR8207), Université de Lille Nord de France, ENSCL, 59655, Villeneuve d'Ascq Cedex, France.
authors.forename: Léna
authors.initials: L
authors.lastname: Sambe
authors.forename: François
authors.initials: F
authors.lastname: Stoffelbach
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Poltorak
authors.forename: Joël
authors.initials: J
authors.lastname: Lyskawa
authors.forename: Aurélie
authors.initials: A
authors.lastname: Malfait
authors.forename: Marc
authors.initials: M
authors.lastname: Bria
authors.forename: Graeme
authors.initials: G
authors.lastname: Cooke
authors.forename: Patrice
authors.initials: P
authors.lastname: Woisel
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D000480:Alkynes / Q000737:chemistry; D001386:Azides / Q000737:chemistry; D002384:Catalysis; D003300:Copper / Q000737:chemistry; D061565:Cycloaddition Reaction; D006571:Heterocyclic Compounds; D057927:Hydrophobic and Hydrophilic Interactions; D044367:Phase Transition; D058105:Polymerization; D011108:Polymers / Q000737:chemistry*; D013696:Temperature; D014867:Water / Q000737:chemistry*
chemical_list: D000180:Acrylic Resins; D000480:Alkynes; D001386:Azides; D006571:Heterocyclic Compounds; D011108:Polymers; D014867:Water; C052970:poly-N-isopropylacrylamide; D003300:Copper; C063887:tetrathiafulvalene
keywords: block copolymer; host-guest interaction; thermoresponsive