Stress-induced colouration and crosslinking of polymeric materials by mechanochemical formation of triphenylimidazolyl radicals.
Stress-induced colouration and crosslinking of polymeric materials by mechanochemical formation of triphenylimidazolyl radicals.
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DOI：
10.1039/c6cc04312g
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发表时间：
2016-06
影响因子：
4.9
通讯作者：
F. Verstraeten;R. Göstl;R. Sijbesma
中科院分区：
文献类型：
--
作者：
F. Verstraeten;R. Göstl;R. Sijbesma
在机械应力下，六芳基联咪唑（HABI）基序可以裂解成三苯基咪唑自由基时，纳入聚合物基质。机械产生的有色自由基可以引发次级自由基反应，产生聚合物网络。因此，HABI机械载体在单个分子部分中结合了键断裂的光学报告和聚合物的增强。
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.