α-Cyclodextrin-Based Polypseudorotaxane Hydrogels

Adrian Domiński

doi:10.3390/ma13010133

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α-Cyclodextrin-Based Polypseudorotaxane Hydrogels

2019-12-28

Adrian Domiński

Tomasz Konieczny

Piotr Kurcok *

DOI：10.3390/ma13010133

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Abstract

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Supramolecular hydrogels that are based on inclusion complexes between alpha-cyclodextrin and (co)polymers have gained significant attention over the last decade. They are formed via dynamic noncovalent bonds, such as host-guest interactions and hydrogen bonds, between various building blocks. In contrast to typical chemical crosslinking (covalent linkages), supramolecular crosslinking is a type of physical interaction that is characterized by great flexibility and it can be used with ease to create a variety of smart hydrogels. Supramolecular hydrogels based on the self-assembly of polypseudorotaxanes formed by a polymer chain guest and alpha-cyclodextrin host are promising materials for a wide range of applications. alpha-cyclodextrin-based polypseudorotaxane hydrogels are an attractive platform for engineering novel functional materials due to their excellent biocompatibility, thixotropic nature, and reversible and stimuli-responsiveness properties. The aim of this review is to provide an overview of the current progress in the chemistry and methods of designing and creating alpha-cyclodextrin-based supramolecular polypseudorotaxane hydrogels. In the described systems, the guests are (co)polymer chains with various architectures or polymeric nanoparticles. The potential applications of such supramolecular hydrogels are also described.

Keywords:

supramolecular hydrogels

polypseudorotaxane

self-assembly

alpha-cyclodextrin

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