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An oxidation-induced fluorescence turn-on approach for non-luminescent flexible polyimide films

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Abstract

To develop stimuli-responsive polymers with highly comprehensive properties, sulfide-containing polyimides with relatively simple structures were designed and synthesized. The polyimides were found to have infrequent oxidation-induced fluorescence turn-on effects by being soaked in hydrogen peroxide (H2O2). The high contrast ratios of fluorescence quantum yield, from not being detected to up to 9.1%, were observed before and after reacting with H2O2. Varied emission wavelengths could be achieved by tailoring the monomer structure. This H2O2-sensitive phenomenon was believed to be the result of the inhibition of charge-transfer effects in the polyimide molecular structure by turning sulfide (donor) into sulfone (acceptor) in the diamine moiety. Furthermore, these tough and thermally stable polyimide films accomplished fluorescence turn-on characteristics without sacrificing their original comprehensive performance of good flexibility and transparency, indicating their potential in high-performance H2O2 sensors, data-security and anti-counterfeit materials.

Graphical abstract: An oxidation-induced fluorescence turn-on approach for non-luminescent flexible polyimide films

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Publication details

The article was received on 02 May 2017, accepted on 30 Jun 2017 and first published on 03 Jul 2017


Article type: Paper
DOI: 10.1039/C7TC01894K
Citation: J. Mater. Chem. C, 2017, Advance Article
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    An oxidation-induced fluorescence turn-on approach for non-luminescent flexible polyimide films

    Z. Zhou, W. Huang, Y. Long, Y. Chen, Q. Yu, Y. Zhang, S. Liu, Z. Chi, X. Chen and J. Xu, J. Mater. Chem. C, 2017, Advance Article , DOI: 10.1039/C7TC01894K

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