Substitution Effects on the Photophysical and Photoredox Properties of Tetraaza[7]helicenes. - Rocker, Johannes; Dresel, Johannes A.; Krieger, Leonie A.; Eckhardt, Paul; Ortuño, Ana M.; Kitzmann, Winald R.; Clever, Guido H.; Heinze, Katja; Opatz, Till (Chemistry - A European Journal, 2023)