Conjugate Microporous Polymer-Derived Conductive Porous Carbon Nanoparticles with Narrow Pore-Size Distribution for Electromagnetic Interference Shielding

Conductive porous carbon nanoparticles (PCNs) with narrow pore-size distribution are considered as a versatile platform for material design and multiapplications, but their fabrication still remains a challenge so far. In this work, a series of conductive PCNs were prepared from their conjugate microporous polymer (CMP) precursors via a controlled calcination strategy. It is found that the chemical structures of CMP precursors have great influence on the micro-nano morphology, pore distribution, and electrical conductivity of these CMP-derived PCNs. The prepared PCN shows high extent of sp(2) carbon, narrow pore-size distribution, high conductivity, and high electromagnetic interference (EMI) shielding performance. High electrical conductivity accompanied with a narrow-distribution porous structure is considered as the main reason for the high-performance EMI shielding of PCNs. This research greatly expands the application scope of porous carbon nanomaterials derived from organic polymer precursors.