New [4]helicene derivatives: Synthesis, characterization and photophysical properties

作者：Hafedh Nesrine; Aloui Faouzi^*; Raouafi Sondes; Dorcet Vincent; Ben Hassine Bechir

来源：Journal of Molecular Liquids, 2018, 262: 310-316.

DOI：10.1016/j.molliq.2018.04.083

• Helicenes
• Photolysis
• Cyclization
• Photooxidation
• Optical properties

The design and synthesis of new[4]helicene derivatives were carried out by incorporating well-defined electron donor and acceptor groups at selected positions of the aromatic nuclei, aiming to use them in optical applications. Helicenes have been obtained in good overall yields through a five-step sequence involving mild experimental conditions and easy purification. Photophysical properties of these tetracyclic systems have been evaluated by UV-visible absorption and fluorescence spectroscopies and an emission in the visible region was observed.

• 出版日期2018-7-15