Correlated translational motions in -rotaxane complexes controlled by a single chemical stimulus

Coordinated motions are essential in the operation of molecular machines. This feature can be achieved by landscaping the energy surface along the movement coordinates. Herein, we present an approach of using a single stimulus to modify the free energy curve describing the threading and shuttling of...

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Published in:Organic & biomolecular chemistry 2024-02, Vol.22 (6), p.1135-114
Main Authors: Kotera, Naoko, Montellano, Pilar, Catalán, Aldo C, Carrasco-Ruiz, Anayeli, Cervantes, Ruy, Tiburcio, Jorge
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Summary:Coordinated motions are essential in the operation of molecular machines. This feature can be achieved by landscaping the energy surface along the movement coordinates. Herein, we present an approach of using a single stimulus to modify the free energy curve describing the threading and shuttling of a ring along a linear molecule. This approach has been realized by locating two identical ring-binding sites near the axle termini. By locating ring-binding stations near the axle termini in a pseudo -rotaxane, a chemical stimulus can be used to affect threading and shuttling motions-with the ring remaining longer and shuttling faster when negatively charged end groups are settled.
ISSN:1477-0520
1477-0539
DOI:10.1039/d3ob01741a