Shigeno Masanori, Kushida Yo, Yamaguchi Masahiko
Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai 980-8578, Japan.
Chem Commun (Camb). 2015 Mar 7;51(19):4040-3. doi: 10.1039/c4cc10418h.
The sulfonamidohelicene tetramer changes its structure between a random-coil and a helix-dimer, by which molecular thermal hysteresis appears. Mixing experiments on helix-dimer and random-coil solutions and kinetic analysis show that the transition from the random-coil to the helix-dimer involves self-catalysis by the helix-dimer.