Journal of Organic Chemistry p. 9080 - 9087 (2006)
Update date:2022-08-03
Topics:
Wegner, Hermann A.
Reisch, Helge
Rauch, Karsten
Demeter, Attila
Zachariasse, Klaas A.
De Meijere, Armin
Scott, Lawrence T.
(Graph Presented) A new class of polycyclic aromatic hydrocarbons - oligoindenopyrenes - has been synthesized featuring a Pd-catalyzed Suzuki - Heck coupling cascade. The oligoindenopyrenes are robust, highly colored substructures of C70 and have properties that might prove useful in new organic materials or devices. After excitation, the tetraindenopyrene derivative 3d undergoes efficient deactivation (99%) by internal conversion to the ground state. The small fluorescence quantum yield (0.004) is in accordance with the short (0.6 ns) fluorescence decay time.
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