A Dual-Ligand Porous Coordination Polymer Chemiresistor with Modulated Conductivity and Porosity

Ming-Shui Yao; Jia-Jia Zheng; Ai-Qian Wu; Gang Xu; Sanjog S Nagarkar; Gen Zhang; Masahiko Tsujimoto; Shigeyoshi Sakaki; Satoshi Horike; Kenichi Otake; Susumu Kitagawa

doi:10.1002/anie.201909096

A Dual-Ligand Porous Coordination Polymer Chemiresistor with Modulated Conductivity and Porosity

Angew Chem Int Ed Engl. 2020 Jan 2;59(1):172-176. doi: 10.1002/anie.201909096. Epub 2019 Nov 22.

Authors

Affiliations

¹ Institute for Integrated Cell-Material Sciences, Kyoto University Institute for Advanced Study, Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto, 606-8501, Japan.
² Fukui Institute for Fundamental Chemistry, Kyoto University, Takano Nishihiraki-cho 34-4, Sakyo-ku, Kyoto, 606-8103, Japan.
³ State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian, 350002, P. R. China.

PMID: 31595640
DOI: 10.1002/anie.201909096

Abstract

Single-ligand-based electronically conductive porous coordination polymers/metal-organic frameworks (EC-PCPs/MOFs) fail to meet the requirements of numerous electronic applications owing to their limited tunability in terms of both conductivity and topology. In this study, a new 2D π-conjugated EC-MOF containing copper units with mixed trigonal ligands was developed: Cu₃ (HHTP)(THQ) (HHTP=2,3,6,7,10,11-hexahydrotriphenylene, THQ=tetrahydroxy-1,4-quinone). The modulated conductivity (σ≈2.53×10^-5 S cm^-1 with an activation energy of 0.30 eV) and high porosity (ca. 441.2 m² g^-1 ) of the Cu₃ (HHTP)(THQ) semiconductive nanowires provided an appropriate resistance baseline and highly accessible areas for the development of an excellent chemiresistive gas sensor.

Keywords: gas sensors; metal-organic frameworks; nanowires; porous coordination polymers; semiconductors.

Abstract

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