(E)-Stilbene hydrophobic fluorophores possessing long perfluorinated or hydrocarbonated chains have been prepared through a stereoselective Wittig-Schlosser reaction. When covalently grafted upon paper, they give rise to a fluorescent-labeled paper upon irradiation with UV light. The hydrophobicity and oleophobicity of the fluorous (E)-stilbene derivative furnish self-cleaning properties. Application in the detection of money counterfeiting is envisioned.
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Granados, A., & Vallribera, A. (2019). Fluorous hydrophobic fluorescent (E)-Stilbene derivatives for application on security paper. Dyes and Pigments, 170. https://doi.org/10.1016/j.dyepig.2019.107597