Mohapatra Hemakesh, Ayarza Jorge, Sanders Emily C, Scheuermann Angelique M, Griffin Philip J, Esser-Kahn Aaron P
Institute for Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, IL, 60637, USA.
Department of Chemistry, University of California, Irvine, Irvine, CA, 92697, USA.
Angew Chem Int Ed Engl. 2018 Aug 27;57(35):11208-11212. doi: 10.1002/anie.201804451. Epub 2018 Jul 27.
Mechano-activated chemistry is a powerful tool for remodeling of synthetic polymeric materials, however, few reactions are currently available. Here we show that using piezochemical reduction of a Cu -based pre-catalyst, a step-growth polymerization occurs via the copper catalyzed azide-alkyne cycloaddition (CuAAC) reaction to form a linear polytriazole. Furthermore, we show that a linear polymer can be crosslinked mechanochemically using the same chemistry to form a solid organogel. We envision that this chemistry can be used to harness mechanical energy for constructive purposes in polymeric materials.
机械活化化学是用于合成聚合物材料重塑的有力工具，然而目前可用的反应很少。在此我们表明，通过基于铜的预催化剂的压致化学还原，会经由铜催化的叠氮化物-炔烃环加成（CuAAC）反应发生逐步聚合，形成线性聚三唑。此外，我们表明可以使用相同的化学方法通过机械化学方式使线性聚合物交联，以形成固体有机凝胶。我们设想这种化学方法可用于利用机械能在聚合物材料中实现建设性目的。
