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Updated: Jul 29, 2025

Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method
Published on: July 19, 2019
Photo-gated polymer mechanochromism from excited-state intramolecular proton transfer
1Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China. mazhy@mail.buct.edu.cn.
Abstract:
Controlled polymer mechanochromism has large potential for new applications. We design a novel ESIPT mechanophore (HBIA-2OH) by three-step synthesis. Connected to polyurethane, it shows unique photo-gated mechanochromism from excited-state intramolecular proton transfer (ESIPT) via photo-induced formation and force-induced breaking of the intramolecular hydrogen bonds. As a control, HBIA@PU experiences no response to photo/force. Thus, HBIA-2OH is a rare mechanophore featuring photo-gated mechanochromism.
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