Stress-induced colouration and crosslinking of polymeric materials by mechanochemical formation of triphenylimidazolyl radicals.
Under mechanical stress, the hexaarylbiimidazole (HABI) motif can cleave to triphenylimidazolyl radicals when incorporated into a polymer matrix. The mechanically produced coloured radicals can initiate secondary radical reactions yielding polymer networks. Thus, the HABI mechanophore combines optical reporting of bond scission and reinforcement of polymers in a single molecular moiety.
Technische Universiteit Eindhoven, Molecular Science and Technology, Group Supramolecular Polymer Chemistry, P.O. Box 513, 5600 MB Eindhoven, The Netherlands. r.gostl@tue.nl r.p.sijbesma@tue.nl.
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Technische Universiteit Eindhoven, Molecular Science and Technology, Group Supramolecular Polymer Chemistry, P.O. Box 513, 5600 MB Eindhoven, The Netherlands. r.gostl@tue.nl r.p.sijbesma@tue.nl.
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Göstl
Technische Universiteit Eindhoven, Molecular Science and Technology, Group Supramolecular Polymer Chemistry, P.O. Box 513, 5600 MB Eindhoven, The Netherlands. r.gostl@tue.nl r.p.sijbesma@tue.nl.
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Sijbesma