title: Pillar[10]arene-based size-selective host-guest complexation and its application in tuning the LCST behavior of a thermoresponsive polymer.
abstract: A new molecular recognition motif between a water soluble pillar[10]arene (WP10) and 1,10-phenanthrolinium guest (G) in water is established. Mainly driven by the cooperativity of multiple electrostatic interactions, hydrophobic interactions, and π-π stacking interactions between WP10 and G, this host-guest complex exhibits a high association constant in water, which is about 17 times higher than that between WP10 and paraquat (PQ). Furthermore, this size selective host-guest complexation is employed to tune the lower critical solution temperature behavior of a random copolymer with PQ derivative pendants.
authors.affiliation: Department of Chemistry, Zhejiang University, Hangzhou, 310027, China.
authors.forename: Guocan
authors.initials: G
authors.lastname: Yu
authors.forename: Jiong
authors.initials: J
authors.lastname: Zhou
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Chi
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D010269:Paraquat / Q000031:analogs & derivatives / Q000737:chemistry; D010618:Phenanthrolines / Q000737:chemistry; D011137:Polystyrenes / Q000737:chemistry*; D000644:Quaternary Ammonium Compounds / Q000737:chemistry; D012995:Solubility; D012996:Solutions; D014867:Water / Q000737:chemistry
chemical_list: D000180:Acrylic Resins; D010618:Phenanthrolines; D011137:Polystyrenes; D000644:Quaternary Ammonium Compounds; D012996:Solutions; D014867:Water; C052970:poly-N-isopropylacrylamide; D010269:Paraquat
keywords: host-guest interactions; pillararenes; size selectivity; supramolecular chemistry; thermoresponsive