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Controlled Supramolecular Architecture Transformation from Homopolymer to Copolymer through Competitive Self‐Sorting Method
Author(s) -
Li Hui,
Fan Xiaodong,
Min Xin,
Qian Yongchao,
Tian Wei
Publication year - 2017
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.201600631
Subject(s) - supramolecular chemistry , copolymer , supramolecular polymers , moiety , monomer , polymer chemistry , materials science , supramolecular assembly , polymer , chemistry , molecule , organic chemistry , composite material
Supramolecular copolymers can not only enrich the diversity of the polymer backbone but also exhibit certain special and improved properties compared with supramolecular homopolymers. However, the synthesis procedure of supramolecular copolymers is relatively complicated and time‐consuming. Herein, a simple transformation from an AB 2 ‐based supramolecular hyperbranched homopolymer to an AB 2 +CD 2 ‐based supramolecular hyperbranched alternating copolymer by the “competitive self‐sorting” strategy is reported. After adding CD 2 monomer, which bears a competitive neutral guest moiety ( TAPN ) and two receptive benzo‐21‐crown‐7 host moieties ( B21C7 ), to the as‐prepared AB 2 ‐type supramolecular hyperbranched homopolymer constructed by the self‐assembly of dialkylammonium salt ( DAAS , A group)‐functionalized pillar[5]arene ( MeP5 , B groups) monomers, the initial homopolymer structure is disrupted and then reassemble into a new supramolecular hyperbranched alternating copolymer based on the competitive self‐sorting interaction between MeP5 ‐ TAPN and B21C7 ‐ DAAS . This study supplies a convenient approach to directly transform supramolecular homopolymers into supramolecular copolymers.