Metal Actuated Ring Translocation Switches in Water

Hang Yin (1) , Roselyne Rosas (2) , Didier Gigmes (3) , Olivier Ouari (3) , Ruibing Wang (1) , Anthony Kermagoret (3) , David Bardelang (3)

1 Institute of Chinese Medical Sciences - State Key Laboratory of Quality Research in Chinese Medicine Taipa, Macau SAR,
2 FRSCM - Fédération des Sciences Chimiques de Marseille
3 ICR - Institut de Chimie Radicalaire

Among a series of metal ions in water, silver is the only one to remotely and reversibly switch cucurbit[7]uril (CB[7]) movements (translocation or uptake) on a rigid and linear three station viologen phenylene imidazole (V-P-I) derivative, avoiding undesired pH actuation. H-1 NMR, UV-vis spectroscopy, mass spectrometry, ITC, and modeling were combined to show that ring translocation or uptake along a molecular thread is possible in water by Ag+ as a metal stimulus.

Keywords: artificial molecular machines; benzimidazolium; binding; cations; chemistry; coordination; cucurbituril; recognition sites; shuttle; synthetic receptor

Domains: Chemical Sciences

Hang Yin, Roselyne Rosas, Didier Gigmes, Olivier Ouari, Ruibing Wang, et al.. Metal Actuated Ring Translocation Switches in Water. Organic Letters, 2018, 20 (11), pp.3187--3191. ⟨10.1021/acs.orglett.8b01019⟩. ⟨hal-02091859⟩