Photo-gated polymer mechanochromism from excited-state intramolecular proton transfer

Xin Cheng; Huan Hu; Yu Wu; Zhimin Ma; Zhiyong Ma

doi:10.1039/D3CC01900D

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Photo-gated polymer mechanochromism from excited-state intramolecular proton transfer†

Xin Cheng,^a Huan Hu,

^a Yu Wu,^a Zhimin Ma^b and Zhiyong Ma

*^a

Author affiliations

* Corresponding authors

^a Beijing 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
E-mail: mazhy@mail.buct.edu.cn

^b College of Engineering, Peking University, Beijing 100871, China

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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Article information

DOI: https://doi.org/10.1039/D3CC01900D
Article type: Communication
Submitted: 18 Apr 2023
Accepted: 17 May 2023
First published: 17 May 2023

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Chem. Commun., 2023,59, 7236-7239

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Photo-gated polymer mechanochromism from excited-state intramolecular proton transfer

X. Cheng, H. Hu, Y. Wu, Z. Ma and Z. Ma, Chem. Commun., 2023, 59, 7236 DOI: 10.1039/D3CC01900D

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Chemical Communications

Photo-gated polymer mechanochromism from excited-state intramolecular proton transfer†

Abstract

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Photo-gated polymer mechanochromism from excited-state intramolecular proton transfer

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