Synthesis, X-Ray Analysis, and Evaluation of the Optoelectronic Properties of a New Thia[6]helicene

Abstract

The synthesis and structural characterization of a new hexahelicene derivative is reported. This compound features a new type of structure bearing a bromine atom. Suitable crystals of the latter indicate that its conformation closely resembles that of the unsubstituted [6]helicene, whose idealized symmetry is C2. The optoelectronic properties of this helical hexacyclic system were determined and exhibit a very interesting behavior.

GRAPHICAL ABSTRACT

Keywords:

• Helicenes
• optical band gap
• photodehydrocyclization
• thiahelicenes
• Wittig reaction

ACKNOWLEDGMENT

The authors are grateful to the DGRS (Direction Générale de la Recherche Scientifique) of the Tunisian Ministry of Higher Education and Scientific Research for financial support.