Issue 47, 2021

Photochromic supramolecular photonic crystals based on host–guest interactions

Abstract

A novel photo-responsive supramolecular hydrogel inverse opal material was described in this communication. The inverse opal material contains a host component β-cyclodextrin (β-CD) and a guest component 3-(acryloyl)amino-1,1′,5,5′-tetramethoxyazobenzen (MAzo). trans-MAzo has stronger association with β-CD than cis-MAzo. Under the irradiation of blue light (475 nm), the MAzo moieties transformed to the trans-configuration, resulting in blue-shift of the structural colour. In contrast, being irradiated with red light (620 nm) regulated MAzo to the cis-configuration and dissociated the host–guest pair; subsequently, the structural colour shifted to red. Therefore, in this system, the variation of the structural colour is in correspondence with the wavelength trend of the incoming light.

Graphical abstract: Photochromic supramolecular photonic crystals based on host–guest interactions

Supplementary files

Article information

Article type
Communication
Submitted
26 Sep 2021
Accepted
15 Nov 2021
First published
16 Nov 2021

J. Mater. Chem. C, 2021,9, 16925-16928

Photochromic supramolecular photonic crystals based on host–guest interactions

Y. Sun, Y. Long, H. Cai, K. Hou, X. Li, X. Zhang, J. Li and K. Song, J. Mater. Chem. C, 2021, 9, 16925 DOI: 10.1039/D1TC04609H

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