Issue 39, 2025
From the journal:

Physical Chemistry Chemical Physics

Reversible thermochromism in violet-phase polydiacetylene derivatives triggered by ultraviolet photopolymerization

Chenxi Zhanga  and  Chenlu He ORCID logo *a  

* Corresponding authors

a School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
E-mail: chenluhe@njust.edu.cn

Abstract

A tetraphenylethylene (TPE)-functionalized diacetylene monomer undergoes direct photopolymerization to form violet-phase polydiacetylene (PDA) under 254 nm UV irradiation, not occurring conventional blue-phase formation. Steric constraints from the bulky TPE units force backbone distortion. The resulting polydiacetylene exhibits reversible violet-to-red thermochromism at 69 °C.

Graphical abstract: Reversible thermochromism in violet-phase polydiacetylene derivatives triggered by ultraviolet photopolymerization

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Article information

DOI
https://doi.org/10.1039/D5CP02612A
Article type
Paper
Submitted
09 Jul 2025
Accepted
05 Sep 2025
First published
08 Sep 2025

Phys. Chem. Chem. Phys., 2025,27, 21127-21131

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Reversible thermochromism in violet-phase polydiacetylene derivatives triggered by ultraviolet photopolymerization

C. Zhang and C. He, Phys. Chem. Chem. Phys., 2025, 27, 21127 DOI: 10.1039/D5CP02612A

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