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Self‐Healing, Expansion–Contraction, and Shape‐Memory Properties of a Preorganized Supramolecular Hydrogel through Host–Guest Interactions
Author(s) -
Miyamae Kohei,
Nakahata Masaki,
Takashima Yoshinori,
Harada Akira
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201502957
Subject(s) - supramolecular chemistry , covalent bond , adamantane , supramolecular polymers , non covalent interactions , ferrocene , materials science , polymer , chemistry , polymer chemistry , molecule , organic chemistry , electrochemistry , hydrogen bond , electrode
Supramolecular materials cross‐linked between polymer chains by noncovalent bonds have the potential to provide dynamic functions that are not produced by covalently cross‐linked polymeric materials. We focused on the formation of supramolecular polymeric materials through host–guest interactions: a powerful method for the creation of nonconventional materials. We employed two different kinds of host–guest inclusion complexes of β‐cyclodextrin (βCD) with adamantane (Ad) and ferrocene (Fc) to bind polymers together to form a supramolecular hydrogel (βCD‐Ad‐Fc gel). The βCD‐Ad‐Fc gel showed self‐healing ability when damaged and responded to redox stimuli by expansion or contraction. Moreover, the βCD‐Ad‐Fc gel showed a redox‐responsive shape‐morphing effect. We thus succeeded in deriving three functions from the introduction of two kinds of functional units into a supramolecular material.