A three-dimensional polycyclic aromatic hydrocarbon based covalent organic framework doped with iodine for electrical conduction

Covalent organic frameworks (COFs) are a class of crystalline porous organic materials with variable struc-tures and fascinating properties. The intrinsic low conductivity impedes their widely application in opto-electronic. Iodine doping is an effective way to enhance the electrical conductivity of COFs. Here, a novel 3D imine COF with lvt topology is synthesized from two different pentacene derivatives with the same core in the form of structural complementarity. DDHP-COF is a highly crystalline material featuring high surface area of 1679 m2/g and excellent thermal stability up to 490 degrees C. Upon doping with iodine, the electrical conductivity can reach as high as 1.5 x 10-2 S/m which is significantly enhanced over 6 orders of magnitude compared with the pristine COF.(c) 2023 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.

Automated summary

Covalent organic frameworks (COFs) are crystalline porous organic materials with variable structures and fascinating properties. Iodine doping is an effective method to enhance the electrical conductivity of COFs. In this study, a novel 3D imine COF with lvt topology was synthesized, and upon doping with iodine, its electrical conductivity was significantly enhanced over 6 orders of magnitude compared with the pristine COF.