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Macromolecular Recognition and Macroscopic Interactions by Cyclodextrins
Author(s) -
Harada Akira,
Takashima Yoshinori
Publication year - 2013
Publication title -
the chemical record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.61
H-Index - 78
eISSN - 1528-0691
pISSN - 1527-8999
DOI - 10.1002/tcr.201300006
Subject(s) - polymer , macromolecule , molecular recognition , azobenzene , side chain , chemistry , polymer chemistry , dissociation (chemistry) , materials science , chemical engineering , organic chemistry , molecule , biochemistry , engineering
Herein macromolecular recognition by cyclodextrins ( CDs ) is summarized. Recognition of macromolecules by CDs is classified as main‐chain recognition or side‐chain recognition. We found that CDs form inclusion complexes with various polymers with high selectivity. Polyrotaxanes in which many CDs are entrapped in a polymer chain were prepared. Tubular polymers were prepared from the polyrotaxanes. CDs were found to recognize side‐chains of polymers selectively. CD host polymers were found to form gels with guest polymers in water. These gels showed self‐healing properties. When azobenzene was used as a guest, the gel showed sol‐gel transition by photoirradiation. When ferrocene was used, redox‐responsive gels were obtained. Macroscopic self‐assembly through molecular recognition has been discovered. Photoswitchable gel association and dissociation have been observed.