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Updated: Apr 21, 2026

Low-energy Cathodoluminescence for OxyNitride Phosphors
Published on: November 15, 2016
Green circularly polarized luminescence with a high dissymmetry factor emitted by a [2.2]fluorenonophane
André Loleit1, Lars Eckhardt2, Markus Ströbele3
1Institut für Organische Chemie, Universität Tübingen, Auf der Morgenstelle 18, Tübingen 72076, Germany. holger.bettinger@uni-tuebingen.de.
Abstract:
We report the chiroptical properties of enantiopure [2.2]fluorenonophane measured using electronic circular dichroism and circularly polarized luminescence spectroscopy. The target compound exhibited excellent chiroptical properties with high dissymmetry factors of gabs = ±1.3 × 10-2 and glum = +2.5 × 10-2/-2.6 × 10-2 in a wide range of solvents, accompanied by strong indications of excimer formation. This study emphasizes the outstanding role of [2.2]paracyclophanes as model systems for small molecules with relatively large CPL and expands this compound class by using the easily accessible and modifiable fluorenone derivative.
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