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Cu nanoparticles are more active catalytically than CuO nanoparticles, which have been widely studied as catalysts for organic synthesis, electrochemistry, and optics.

Frontal polymerization (FP) is a process in which the heat generated by the self‐reaction transforms monomers to cured polymers. Here, in order to improve the flexibility of polydicyclopentadiene, comonomers (norbornene‐terminated polyether, ND‐230,400,2000) are designed and synthesized, which can copolymerize with dicyclopentadiene (DCPD) by FP. The polymers (ND) prepared by ND‐2000 and DCPD have tunable mechanical properties, from thermosets to elastomers. Specifically, the breaking elongation of the polymers can be varied 69‐fold, from 6.1% to 423.4% by controlling the proportion of ND‐2000. Among them, ND polymer with 50 wt% ND‐2000 has good elastic behavior without yield. And, the reaction mixture solutions of DCPD and ND‐2000 have the characteristics of controllable gel time and shear thinning, which make it have the potential of application in additive manufacturing.

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