Synthesis and Electrical Property of Graphite Oxide-like Mesoporous <i>N</i>‑Carbon Derived from Polyimide-Covalent Organic Framework Templates.

ABSTRACT: In this study, two PI-COFs, PI-TAPA-PMDI (twisted triphenylamine node) and PI-TAPB-PMDI (non-twisted triphenylbenzene node), were pelletized (∼10 mm diameter) under 90 MPa and carbonized at 600 °C in argon for 2-50 h. Carbonization produced nitrogen-doped, defective porous carbons with an enhanced electronic conductivity. Electrochemical impedance spectroscopy showed that PI-TAPB-PMDI COF-600 heated for 50 h had significantly lower resistance (R _s ≈ 14.14 Ω and R _ct ≈ 61.66 Ω) compared to shorter heating treatments (R _s ≈ 27.70 Ω), indicating improved electron transport and better interaction with a Fe-(CN)₆ ^3-/Fe-(CN)₆ ^4- redox couple system. The XRD patterns verified the crystalline structur

SUBMITTER: Nagai A 

PROVIDER: S-EPMC12423787 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature