Jump to main content
Jump to site search


Light and Ferric Ion Responsive Fluorochromic Hydrogels with High Strength and Self-healing Ability

Abstract

Here, light and ferric ion (Fe3+) responsive fluorochromic hydrogels with high strength and self-healing ability were designed and fabricated. The hydrogel was prepared via physical crosslinking of poly(vinyl alcohol) (PVA), in the presence of γ-cyclodextrin-spiropyran (γ-CD-SP) and tannic acid (TA). By utilizing the hydrogen bonding interaction between the γ-CD moiety and PVA chain, the fluorophore γ-CD-SP could be incorporated into the PVA gel successfully. Owing to photo-isomerization of the SP moiety, the hydrogel showed “on/off” fluorescence behavior upon ultraviolet/bright light irradiation. Moreover, the fluorescent emission of the hydrogel could also be turned off in the presence of Fe3+, by fluorescence inner filter effects, and then recovered by adding EDTA. The hydrogel possessed high tensile strength (i.e. 2.18 MPa) as well as self-healing ability. With the features of high strength, self-healing, tunable fluorescent properties, the hydrogels would have potential applications in wearable device, fluorescence sensors, and optical switches.

Back to tab navigation

Supplementary files

Publication details

The article was received on 29 Sep 2019, accepted on 07 Nov 2019 and first published on 07 Nov 2019


Article type: Paper
DOI: 10.1039/C9PY01459D
Polym. Chem., 2019, Accepted Manuscript

  •   Request permissions

    Light and Ferric Ion Responsive Fluorochromic Hydrogels with High Strength and Self-healing Ability

    B. Wang, L. Liu and L. Liao, Polym. Chem., 2019, Accepted Manuscript , DOI: 10.1039/C9PY01459D

Search articles by author

Spotlight

Advertisements