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Issue 9, 2011
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Kinetic studies on visible-light-switchable photochromic fluorophores based on diarylethenes

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Abstract

We present three recently developed photochromic fluorophores that are based on diarylethenes with elongated conjugated π-systems. The diarylethenes 1 and 3 can be switched from their open to their closed form with visible light. The diarylethenes 1 and 2 are covalently coupled to a standard rhodamine B-based fluorophore and act as photoswitchable resonance energy acceptors. By controlling their switching state, the fluorescence intensity of the dye can be modulated. The third compound 3 is a diarylethene that shows photoswitchable inherent fluorescence due to its stilbazolium-like structure. Ensemble experiments demonstrate that diarylethene-based photoswitches show superior characteristics regarding their switching performance, thermal stability and fatigue resistance. These attributes make them promising candidates for super-resolution imaging methods that are based on the determinate fluorescence switching of fluorophores between an off- and an on-state.

Graphical abstract: Kinetic studies on visible-light-switchable photochromic fluorophores based on diarylethenes

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Publication details

The article was received on 31 Jan 2011, accepted on 04 Apr 2011 and first published on 23 May 2011


Article type: Paper
DOI: 10.1039/C1PP05051F
Citation: Photochem. Photobiol. Sci., 2011,10, 1488-1495
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    Kinetic studies on visible-light-switchable photochromic fluorophores based on diarylethenes

    B. Seefeldt, K. Altenhöner, O. Tosic, T. Geisler, M. Sauer and J. Mattay, Photochem. Photobiol. Sci., 2011, 10, 1488
    DOI: 10.1039/C1PP05051F

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