Slow kinetic evolution of nanohelices based on gemini surfactant self-assemblies with various enantiomeric excess; chiral segregation towards a racemic mixture

Jie Gao (1) , Yutaka Okazaki (1, 2) , Emilie Pouget (1) , Sylvain Nlate (1) , Brice Kauffmann (3) , Franck Artzner (4) , Thierry Buffeteau (5) , Reiko Oda (1)

1 CBMN - Chimie et Biologie des Membranes et des Nanoobjets
2 Kyoto Institute of Technology
3 Soutien à la Recherche de l'Institut Européen de Chimie Biologique
4 IPR - Institut de Physique de Rennes
5 ISM - Institut des Sciences Moléculaires

Very slow kinetic evolution (days) of chiral nanoribbons based on amphiphilic molecular assemblies is investigated for various enantiomeric excess. In the early stage of ribbon formation, those formed for low enantiomeric excess (0 <= ee <= 0.5) show chiral segregation, and are made with a mixture of short-pitched right-handed and left-handed twisted ribbons. With time, these nano-ribbons merge to form ribbons with larger pitch and single-handedness, which is determined by the majority enantiomer.

Domaines: Physique [physics]

Jie Gao, Yutaka Okazaki, Emilie Pouget, Sylvain Nlate, Brice Kauffmann, et al.. Slow kinetic evolution of nanohelices based on gemini surfactant self-assemblies with various enantiomeric excess; chiral segregation towards a racemic mixture. Materials Chemistry Frontiers, 2021, 5 (7), ⟨10.1039/d0qm00989j⟩. ⟨hal-03216997⟩