Terbium(III) Luminescent Complexes as Millisecond-Scale Viscosity Probes for Lifetime Imaging

Fluorescent probes that are able to directly measure viscosity are attractive candidates for the study of intracellular environments. We report a new class of luminescent rotors, based on the sensitized emission of a terbium­(III) complex. A 4-fold increase in both quantum yield and luminescence lif...

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Published inJournal of the American Chemical Society Vol. 139; no. 23; pp. 7693 - 7696
Main Authors Bui, Anh Thy, Grichine, Alexei, Duperray, Alain, Lidon, Pierre, Riobé, François, Andraud, Chantal, Maury, Olivier
Format Journal Article
LanguageEnglish
Published WASHINGTON American Chemical Society 14.06.2017
Amer Chemical Soc
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Summary:Fluorescent probes that are able to directly measure viscosity are attractive candidates for the study of intracellular environments. We report a new class of luminescent rotors, based on the sensitized emission of a terbium­(III) complex. A 4-fold increase in both quantum yield and luminescence lifetime was observed in viscous media for the studied complexes, with a lifetime ranging from 0.23 to 0.89 ms over a broad range of viscosities (0.6–1200 cP). The presented approach, relying on the millisecond-scale luminescence lifetime of the lanthanide ions, was applied to fixed T24 cancer cells using temporal sampling lifetime imaging microscopy.
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content type line 23
ISSN:0002-7863
1520-5126
DOI:10.1021/jacs.7b02951