ArticleSmall (Weinheim an der Bergstrasse, Germany)2024
A New Class of Mechano-Responsive Polyurethane Via Anthracene -TAD Diels-Alder (DA) Click Chemistry.
Article in Small (Weinheim an der Bergstrasse, Germany), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
5 citing papers in PubMed.
- High-Strength, Recyclable Multifunctional Elastomer with a Dynamic Covalent Supramolecular Network.Small (Weinheim an der Bergstrasse, Germany) · 2026Article
- Designing Strong, Tough, Fire-Retardant and Self-Healing Elastomers with Phosphorus/Nitrogen- and Biphenyl-Containing Segments.Advanced materials (Deerfield Beach, Fla.) · 2026Article
- Reversible Stress-memory Phosphorescent Carbon Nanodots via Supramolecular Confinement Engineering for Aerospace Monitoring.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Turning Stress Into Signal: Mechanochromic Materials in Commodity and Technologically Relevant Polymers.Chemistry, an Asian journal · 2026Review
- A New Class of Mechano-Responsive Polyurethane Via Anthracene -TAD Diels-Alder (DA) Click Chemistry.Small (Weinheim an der Bergstrasse, Germany) · 2024Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
Smart or stimuli-responsive polymers have garnered significant interest in the scientific community due to their response to different stimuli like pH, temperature, light, mechanical force, etc. Mechanophoric polymer is an intriguing class of smart polymers that respond to external mechanical force by producing fluorescent moieties and can be utilized for damage detection and stress-sensing assessment. In recent reports on mechanophoric polymers, different mechanophoric motifs such as spiropyran, rhodamine, coumarin, etc. are explored. This investigation reports a new kind of mechanophoric polyurethane (PU) adduct based on Diels-Alder (DA) click chemistry. Here, an anthracene(An)-end capped tri-armed urethane system is synthesized, followed by a DA reaction using bis-(1,2,4-triazoline-3,5-dione) (bis-TAD) derivative. The incorporation of bis-TAD in the urethane system renders the anthracene inactive ("turn-off") by dismantling its conjugation as a result of a successful DA reaction. The soft PU translated into a harder material through bis-TAD linkages between polymer chains as evident from nanoindentation (NINT) analysis. The resulting material reverts back to its fluorescent "turned-on" mode owing to a force-accelerated retro-Diels-Alder (r-DA) reaction. Besides the mechanophoric attributes, the material demonstrates self-healing behavior examined by microscopic investigations. This innovative approach can be a potential route to design responsive polymers with dynamic functionalities for advanced material applications.
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Registered trials
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