The first examples of rotaxanes based on calixarenes threaded by dialkylammonium ions, which also represent the first examples of calixarenebased molecular shuttles, are reported. The base/acid treatment demonstrated that these systems act as molecular shuttles, which move between three sites on the axle. When small OMe groups are appended at the calix[6]arene lower rim an unprecedented inversion of its shuttling direction is observed, which occurs through a cone-to-cone inversion of the macrocycle.

Fixed or invertible calixarene-based directional shuttles

PIERRO, TERESA;GAETA, CARMINE;TALOTTA, CARMEN;CASAPULLO, Agostino;NERI, Placido
2011

Abstract

The first examples of rotaxanes based on calixarenes threaded by dialkylammonium ions, which also represent the first examples of calixarenebased molecular shuttles, are reported. The base/acid treatment demonstrated that these systems act as molecular shuttles, which move between three sites on the axle. When small OMe groups are appended at the calix[6]arene lower rim an unprecedented inversion of its shuttling direction is observed, which occurs through a cone-to-cone inversion of the macrocycle.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/3037644
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