Intense Redox-Driven Chiroptical Switching with a 580 mV Hysteresis Actuated Through Reversible Dimerization of an Azoniahelicene - Brandt, JR; Pospíil, L; Bednárová, L; Correa, da Costa R; White, AJP; Mori, T; Teplý, F; Fuchter, MJ (Chemical Communications, 2017)