A Simple Mechanochromic Mechanophore Based on Aminothiomaleimide

A Simple Mechanochromic Mechanophore Based on Aminothiomaleimide

Mechanochromic mechanophores have promising applications in stress sensing and damage detection. Here we report a simple mechanofluorochromic mechanophore based on aminothiomaleimide (ATM). Poly­(methyl acrylate) containing this mechanophore (ATM-PMA) was synthesized by atom transfer radical polymer...

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Veröffentlicht in:ACS macro letters 2021-11, Vol.10 (11), p.1423-1428
Hauptverfasser: Tan, Min, Hu, Zhitao, Dai, Yunkai, Peng, Yanling, Zhou, Yecheng, Shi, Yi, Li, Yuanchao, Chen, Yongming
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Polymerization
Polymers - chemistry
Spectrometry, Fluorescence
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container_end_page 1428
container_issue 11
container_start_page 1423
container_title ACS macro letters
container_volume 10
creator Tan, Min
Hu, Zhitao
Dai, Yunkai
Peng, Yanling
Zhou, Yecheng
Shi, Yi
Li, Yuanchao
Chen, Yongming
description Mechanochromic mechanophores have promising applications in stress sensing and damage detection. Here we report a simple mechanofluorochromic mechanophore based on aminothiomaleimide (ATM). Poly­(methyl acrylate) containing this mechanophore (ATM-PMA) was synthesized by atom transfer radical polymerization (ATRP) using an ATM-derived difunctional initiator. To investigate its mechanofluorochromism, the solution of ATM-PMA was subjected to ultrasonication, and size exclusion chromatography (SEC) and fluorescence spectroscopy were employed to monitor the changes in molecular weight and fluorescence emission. The results showed that the molecular weight of ATM-PMA decreased upon ultrasonication, accompanied by a shift of fluorescence emission from bright yellow to light blue. This mechanophore of a simple functional group of ATM has great potential to be used in mechanochromic polymer materials.
doi_str_mv 10.1021/acsmacrolett.1c00543
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subjects Polymerization
Polymers - chemistry
Spectrometry, Fluorescence
title A Simple Mechanochromic Mechanophore Based on Aminothiomaleimide
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