Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 34, Issue 23-24, Pages 1856-1862Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201300731
Keywords
hyperbranched polymers; neutral guests; pillararenes; supramolecular chemistry; supramolecular polymers
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Funding
- National Natural Science Foundation of China [21272155, 21272147]
- Innovation Program of Shanghai Municipal Education Commission [13YZ010]
- Beijing National Laboratory for Molecular Sciences
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A heterotritopic copillar[5]arene monomer by introducing effective neutral guest moieties (methylene chains end-capped with cyano and triazole groups) to a pillar[5]arene macrocycle is prepared. This well-designed AB(2)-type copillar[5]arene contains strong host-guest recognition motifs that are connected with relatively flexible and long linkers, thus efficiently assembles to form supramolecular hyperbranched polymer (SHP) in chloroform solution, which is characterized by various techniques including H-1 NMR, DOSY, viscosity, DLS, and TEM. Particularly, this supramolecular polymer can be effectively depolymerized by adding a competitive butanedinitrile guest.
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