Issue 29, 2022

Fabrication of multi-responsive photonic crystals based on selenium-containing copolymers

Abstract

Responsive photonic crystals (PCs) have attracted great interest due to their adjustable structure color. In this study, a visual responsive PC responding to oxidation, light and pH stimuli was created based on a selenium-containing copolymer by the inverse opal photonic crystal (IOPC) method. Due to the weak bond energy of alkyl carbon–selenium bonds, they easily fracture under the influence of ROS, ultraviolet light and pH. This resulted in a significant drop in the refractive index (RI) of the medium and an increase in lattice spacing, which led to a blueshift of the band gap of RPCs based on Bragg's law Image ID:d2py00654e-t1.gif. Meanwhile, the color of PCs varied significantly with the blueshift of the band gap, and a visual response to reactive oxygen species, ultraviolet radiation and pH was realized. This is a simple and direct method to detect oxidation and pH in the environment, as well as reveal the irradiation history of materials, which shows great promise in environmental monitoring.

Graphical abstract: Fabrication of multi-responsive photonic crystals based on selenium-containing copolymers

Supplementary files

Article information

Article type
Paper
Submitted
21 5月 2022
Accepted
29 6月 2022
First published
30 6月 2022

Polym. Chem., 2022,13, 4290-4297

Fabrication of multi-responsive photonic crystals based on selenium-containing copolymers

B. Xu, X. Ma, A. Dai, X. Pan, X. Pan, N. Li and J. Zhu, Polym. Chem., 2022, 13, 4290 DOI: 10.1039/D2PY00654E

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