Oligoindenopyrenes: a new class of polycyclic aromatics.
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 C(70) 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.
Wegner
Hermann A
HA
Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077 Göttingen, Germany.
Reisch
Helge
H
Rauch
Karsten
K
Demeter
Attila
A
Zachariasse
Klaas A
KA
Meijere
Armin de
Ad
Scott
Lawrence T
LT
D005453:Fluorescence; D009682:Magnetic Resonance Spectroscopy; D011721:Pyrenes / Q000737:chemistry*; D014961:X-Ray Diffraction
D011721:Pyrenes