Related Experiment Video
Updated: Feb 10, 2026

Real-Time Void Spot Assay
Published on: February 10, 2023
Compression of a Flapping Mechanophore Accompanied by Thermal Void Collapse in a Crystalline Phase
Takuya Yamakado1, Kazuya Otsubo1, Atsuhiro Osuka1
1Graduate School of Science , Kyoto University , Kyoto 606-8502 , Japan.
Abstract:
Mechanical control of the molecular energy landscape is an important issue in modern materials science. Mechanophores play a unique role in that the mechanical responses are induced against the activation barrier for intramolecular transformation with the aid of external forces. Here we report an unprecedented activation process of a flexible flapping mechanophore. Namely, thermal void collapse in a crystalline phase triggers mechanophore compression in a definite proportion. Unfavored conformational planarization of the flapping mechanophore is compulsorily induced by packing force, leading to a total energy gain in crystal packing. Fluorescence chromism indicates extended π conjugation resulting from the mechanophore compression, giving rise to an energy transfer from the unpressed to compressed conformers.
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