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Electrochemical Monitoring of the Fluorescence Emission of Tetrazine and Bodipy Dyes Using Total Internal Reflection Fluorescence Microscopy Coupled to Electrochemistry.

Abstract : A very sensitive technique where an electrochemical cell is coupled to a total internal reflection fluorescence microscopy setup is described and applied for the first time to the electrochemical monitoring of the fluorescence of organic dyes in solution. It is shown that this setup basically allows both spatial and time resolution for the recorded fluorescence signal as a function of the electrode potential: indeed the variations of the emission intensity are recorded within the diffusion layer for a classical cyclic voltammetry or chronoamperometry experiment inducing the redox conversion of an emissive form into a non emissive one (and conversely). Simultaneously, the variations of the emissive state lifetime are measured to discriminate between a mechanism involving only the conversion into a non emissive form from one involving a quenching between the emitter and the electrogenerated species. The results concerning the investigation of the electrochemical monitoring of the fluorescence properties for two types of original dyes are presented, demonstrating the possibility to switch on and off the emission in a fully reversible way and to investigate in depth the mechanisms associated to this switch.
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https://hal.archives-ouvertes.fr/hal-00576859
Contributor : Robert Bernard Pansu Connect in order to contact the contributor
Submitted on : Tuesday, March 15, 2011 - 2:56:14 PM
Last modification on : Friday, January 14, 2022 - 4:24:02 PM

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Fabien Miomandre, E. Lépicier, S. Munteanu, O. Galangau, Jean Frédéric Audibert, et al.. Electrochemical Monitoring of the Fluorescence Emission of Tetrazine and Bodipy Dyes Using Total Internal Reflection Fluorescence Microscopy Coupled to Electrochemistry.. ACS Applied Materials & Interfaces, Washington, D.C. : American Chemical Society, 2011, epub ahead of print. ⟨10.1021/am100980u⟩. ⟨hal-00576859⟩

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