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New Fluorophores Based on Trifluorenylamine with Very Large Intrinsic Three-Photon Absorption Cross Sections

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journal contribution
posted on 27.10.2005, 00:00 by Zhiyong Suo, Mikhail Drobizhev, Charles W. Spangler, Niklas Christensson, Alexander Rebane
A new fluorophore, tri(9,9-diethyl-9H-fluorenyl)amine, was synthesized by the Buchwald−Hartwig reaction of 2-aminofluorene, and based on this molecule three more fluorophores were prepared that exhibit a very large intrinsic three-photon absorption in the near-IR region, which scales as a third power of the bridge length.