ArticleChemical science2026
Controlling the rotary direction of light-driven molecular motors by topological confinement.
Article in Chemical science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
Inspired by biological machines, artificial light-driven molecular motors based on overcrowded alkenes have been developed. They can perform repetitive unidirectional rotary motion around the central olefinic bond, triggered by light and heat. However, unlike natural motors, which are sophisticated at tuning their rotary direction, it remains a major challenge to control the rotary direction of manmade motors on demand. Here, we show that by covalently connecting both the upper and lower halves of the molecular motor with ethylene glycols, topological confinement can dictate whether the motor is rotating forward or backward. Experimental data demonstrate that when the length of the macrocycle is short, rotary motion is fully blocked, while a medium-sized chain allows exclusive backward thermal
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