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Pyrene spiropyran dyad: solvato-, acido- and mechanofluorochromic properties and its application in acid sensing and reversible fluorescent display

Abstract

Fluorescent molecular switches have great application potential in sensing and data storage, etc. Materials that exhibit fluorescence switching properties both in solution and in solid state are not easy to achieve because the conflict of ACQ and AIE effect. Here, a dyad of pyrene decorated spiropyran was designed by single bond linkage which gives out solvent polarity correlated blue to green emission in solutions and blue emission in solid states, although neither pyrene nor spiropyran emit in visible light region itself. Acid could trigger the isomerization of spiropyran moiety to protonated merocyanine (MCH) form accompanied with the vanish of emission in solution. whereas, crystalline Py-MCH exhibits red/dark “on/off” fluorescent switch upon grinding. Moreover, acid sensing and reversible fluorescent display were demonstrated based on Py-Sp doped polymer nanofibers and films utilizing the stimuli-responsive emission switching property.

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Publication details

The article was received on 07 May 2018, accepted on 10 Jun 2018 and first published on 12 Jun 2018


Article type: Paper
DOI: 10.1039/C8TC02208A
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
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    Pyrene spiropyran dyad: solvato-, acido- and mechanofluorochromic properties and its application in acid sensing and reversible fluorescent display

    X. Su, Y. Ji, W. Pan, S. Chen, Y. Zhang, T. Lin, L. Liu, M. Li, Y. Liu and S. X. Zhang, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC02208A

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