Zhou Hua-Qun, He Yonghe, Hu Jie-Ying, Chung Lai-Hon, Gu Qinfen, Liao Wei-Ming, Zeller Matthias, Xu Zhengtao, He Jun
School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, Guangdong, China.
Chem Commun (Camb). 2021 Jan 7;57(2):187-190. doi: 10.1039/d0cc06765b. Epub 2020 Dec 14.
A linker molecule with four pendant thiophene functions was crystallized with Zr(iv) ions to form a semiconductive porous coordination solid (1.1 × 10 S cm). Oxidative treatment with FeCl guests then coupled the thiophene units to form conjugated bridges as covalent crosslinks. The resulting hybrid of a metal-organic framework and conjugated polymer featured robust crystalline order that withstood long-term air exposure and broad pH (from 0 to 12) conditions. Moreover, the homocoupled thiophene units, conjugated through sulfide links (-S-) with the linker backbone, afforded higher electronic conductivity (e.g., >2.2 × 10 S cm), which is characteristic of conductive polymer prototypes of polythiophene and polyphenylene sulfide. The crosslinked solid also exhibited proton conductivity that could be increased broadly upon HSO treatment (e.g., from 5.0 × 10 to 1.6 × 10 S cm).
