Premium
Cover Picture: Organic Light‐Emitting Diodes from Symmetrical and Unsymmetrical π‐Extended Tetraoxa[8]circulenes (Chem. Eur. J. 44/2010)
Author(s) -
Nielsen Christian B.,
BrockNannestad Theis,
Reenberg Theis K.,
Hammershøj Peter,
Christensen Jørn. B.,
Stouwdam Jan W.,
Pittelkow Michael
Publication year - 2010
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201090217
Subject(s) - cover (algebra) , diode , oled , condensation , blue light , chemistry , optoelectronics , materials science , optics , photochemistry , organic chemistry , physics , meteorology , engineering , mechanical engineering , layer (electronics)
π‐Extended tetraoxa[8]circulenes are formed in an acid‐mediated condensation of 2,3‐bisundecyl‐1,4‐benzoquinone with 1,4‐naphthoquinone. The synthesis, characterization and incorporation of this series of alkane‐soluble π‐extended tetraoxa[8]circulenes in organic light‐emitting diodes is described in the Communication by Pittelkow et al. on page 13030 ff. The tetraoxa[8]circulenes, depicted on the cover and overlooked by the Danish children's cartoon celebrity “Cirkeline”, exhibit beautiful green–blue to blue fluorescence depending on the substitution pattern.