Conjugated crosslinks boost the conductivity and stability of a single crystalline metal-organic framework

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

7 Scopus Citations
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Author(s)

  • Hua-Qun Zhou
  • Yonghe He
  • Jie-Ying Hu
  • Lai-Hon Chung
  • Qinfen Gu
  • And 4 others
  • Wei-Ming Liao
  • Matthias Zeller
  • Zhengtao Xu
  • Jun He

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)187-190
Journal / PublicationChemical Communications
Volume57
Issue number2
Online published27 Nov 2020
Publication statusPublished - 7 Jan 2021

Abstract

A linker molecule with four pendant thiophene functions was crystallized with Zr(iv) ions to form a semiconductive porous coordination solid (1.1 × 10-5 S cm-1). Oxidative treatment with FeCl3 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 × 10-3 S cm-1), 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 H2SO4 treatment (e.g., from 5.0 × 10-7 to 1.6 × 10-3 S cm-1). 

Citation Format(s)

Conjugated crosslinks boost the conductivity and stability of a single crystalline metal-organic framework. / Zhou, Hua-Qun; He, Yonghe; Hu, Jie-Ying; Chung, Lai-Hon; Gu, Qinfen; Liao, Wei-Ming; Zeller, Matthias; Xu, Zhengtao; He, Jun.

In: Chemical Communications, Vol. 57, No. 2, 07.01.2021, p. 187-190.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review