The Role of Torsion on the Force-Coupled Reactivity of a Fluorenyl Naphthopyran Mechanophore.

ABSTRACT: The unique reactivity of molecules under force commands an understanding of structure-mechanochemical activity relationships. While conceptual frameworks for understanding force transduction in many systems are established, systematic investigations into force-coupled molecular torsions are limited. Here, we describe a novel fluorenyl naphthopyran mechanophore for which mechanical force is uniquely coupled to the torsional motions associated with the overall chemical transformation as a result of the conformational rigidity imposed by the fluorene group. Using a combined experimental and theoretical approach, we demonstrate that variation in the pulling geometry on the fluorene subunit results in significant differences in mechanochemical activity due to pronounced changes in how force is

SUBMITTER: Osler SK 

PROVIDER: S-EPMC11783525 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature