Synthesis and optical and electrochemical properties of core-fluorinated perylene bisimides.
[reaction: see text] A series of bay position difluoro- or tetrafluoro-substituted perylene bisimides have been synthesized by nucleophilic halogen exchange reaction of the corresponding dibromo- and tetrachloro-substituted perylene bisimides, respectively, with potassium fluoride. Compared to the parent unsubstituted perylene bisimides, these compounds display hypsochromically shifted absorption and fluorescence spectra with fluorescence quantum yields up to unity enabling bright yellow emission. Their electrochemical properties and crystal structures of two perylene bisimides are also reported.
Würthner
Frank
F
Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany. wuerthner@chemie.uni-wuerzburg.de
Osswald
Peter
P
Schmidt
Rüdiger
R
Kaiser
Theo E
TE
Mansikkamäki
Heidi
H
Könemann
Martin
M