Despite great strides made in understanding the structural, mechanical, and electronic properties of two-dimensional polymers, there is very little known about their temperature-dependent polymorphs and resiliency. This work is the first comparison of a chemically homologous series of linear and two-dimensional polyarylene polymers at high temperatures. The 2D polymer topology offers a potential to design higher thermal resilience than the 1D polymer topology. First principles DFT molecular mechanics and dynamics methods agree quantitatively with the known behavior of linear poly(p-phenylene terephthalamide), more commonly known as Kevlar®. Matrix effects unique to the covalent organic framework and graphamid 2-D topologies enable significantly more interplanar hydrogen bonding for structural and thermomechanical stability. The covalent organic framework and graphamid offer significant advantages for combined light weight, high strength and high temperature ultra-performance applications.

Two-dimensional polyarylene materials and interfaces at extreme temperature

ACS Spring 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.