Oxa[7]superhelicene: A π-Extended Helical Chromophore Based on Hexa-peri -hexabenzocoronenes
Journal article published in 2018 by
David Reger 
,
Philipp Haines,
Frank W. Heinemann,
Dirk M. Guldi,
Norbert Jux
,
Philipp Haines,
Frank W. Heinemann,
Dirk M. Guldi,
Norbert Jux
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Abstract
AbstractA novel π‐extended “superhelicene” based on hexa‐peri‐hexabenzocoronenes (HBCs) has been synthesized by an efficient four‐step synthetic procedure starting from diphenyl ether. Comprehensive structural analysis of the helicene was performed by NMR spectroscopy and mass spectrometry measurements together with X‐ray analysis. Physicochemical analysis of the superhelicene and suitable HBC references revealed it had outstanding fluorescent features with quantum yields of over 80 %.