Journal
CHEMICAL SCIENCE
Volume 4, Issue 7, Pages 2833-2843Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3sc22325f
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Funding
- Region Rhone-Alpes (Cluster 5)
- European Research Council (ERC) [Marches 278845]
- European Research Council (ERC)
- Region des Pays de la Loire [Marches - 278845]
- GENCI-CINES/IDRIS [c2012085117]
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A water soluble Lemke chromophore derivative shows an unusual polarity dependence of its emission efficiency, leading to strong red-NIR fluorescence in water when fitted with appropriate water-solubilizing polymer chains. In this edge article, the synthesis of the chromophore is described. The dependence of its fluorescence on solvent polarity is investigated experimentally and rationalized on the basis of ab initio calculations. Finally, we demonstrate that this chromophore is a valuable candidate for in vivo two-photon imaging of cerebral vasculature, with two-photon absorption and emission in the biological transparency window.
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