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Pillar[10]arene‐Based Size‐Selective Host–Guest Complexation and Its Application in Tuning the LCST Behavior of a Thermoresponsive Polymer
Author(s) -
Yu Guocan,
Zhou Jiong,
Chi Xiaodong
Publication year - 2015
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201400570
Subject(s) - lower critical solution temperature , stacking , copolymer , pillar , cooperativity , polymer chemistry , polymer , hydrophobic effect , chemistry , chemical engineering , materials science , organic chemistry , biochemistry , structural engineering , engineering
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.