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Issue 40, 2017
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Photoswitchable thermogelling systems based on a host–guest approach

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Abstract

Intelligent regulation of fluid mechanical properties is an enormous challenge. Here we report a photocontrolled thermogelling system that features switchable sol–gel transition in response to light. Such a system is composed of an amphiphilic copolymer appending with charged long alkyl stickers and α-cyclodextrin (α-CD) host units. Temperature can induce reversible threading/dethreading between the α-CD and the alkyl chain, leading to a sol–gel transition. With the introduction of a competitive photoresponsive azobenzene guest, one can remotely modulate the systemic gelation points in a broad temperature window via light irradiation. This class of responsive hydrogel systems would open up a new host–guest approach for the design of logical soft materials.

Graphical abstract: Photoswitchable thermogelling systems based on a host–guest approach

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Publication details

The article was received on 21 Jul 2017, accepted on 26 Sep 2017 and first published on 26 Sep 2017


Article type: Paper
DOI: 10.1039/C7TC03269B
Citation: J. Mater. Chem. C, 2017,5, 10549-10554
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    Photoswitchable thermogelling systems based on a host–guest approach

    X. Hao, M. Xu, J. Hu and Q. Yan, J. Mater. Chem. C, 2017, 5, 10549
    DOI: 10.1039/C7TC03269B

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