Integration of a (–Cu–S–)n plane in a metal–organic framework affords high electrical conductivity

Abhishek Pathak, Jing-Wen Shen, Muhammad Usman, Ling-Fang Wei, Shruti Mendiratta, Yu-Shin Chang, Batjargal Sainbileg, Chin-May Ngue, Ruei-San Chen, Michitoshi Hayashi, Tzuoo-Tsair Luo, Fu-Rong Chen, Kuei-Hsien Chen (), Tien-Wen Tseng (), Li-Chyong Chen () and Kuang-Lieh Lu ()
Additional contact information
Abhishek Pathak: Academia Sinica
Jing-Wen Shen: National Taipei University of Technology
Muhammad Usman: Academia Sinica
Ling-Fang Wei: Academia Sinica
Shruti Mendiratta: Academia Sinica
Yu-Shin Chang: National Taiwan University of Science and Technology
Batjargal Sainbileg: National Taiwan University
Chin-May Ngue: Academia Sinica
Ruei-San Chen: National Taiwan University of Science and Technology
Michitoshi Hayashi: National Taiwan University
Tzuoo-Tsair Luo: Academia Sinica
Fu-Rong Chen: National Tsing Hua University
Kuei-Hsien Chen: National Taiwan University
Tien-Wen Tseng: National Taipei University of Technology
Li-Chyong Chen: National Taiwan University
Kuang-Lieh Lu: Academia Sinica

Nature Communications, 2019, vol. 10, issue 1, 1-7

Abstract: Abstract Designing highly conducting metal–organic frameworks (MOFs) is currently a subject of great interest for their potential applications in diverse areas encompassing energy storage and generation. Herein, a strategic design in which a metal–sulfur plane is integrated within a MOF to achieve high electrical conductivity, is successfully demonstrated. The MOF {[Cu2(6-Hmna)(6-mn)]·NH4}n (1, 6-Hmna = 6-mercaptonicotinic acid, 6-mn = 6-mercaptonicotinate), consisting of a two dimensional (–Cu–S–)n plane, is synthesized from the reaction of Cu(NO3)2, and 6,6′-dithiodinicotinic acid via the in situ cleavage of an S–S bond under hydrothermal conditions. A single crystal of the MOF is found to have a low activation energy (6 meV), small bandgap (1.34 eV) and a highest electrical conductivity (10.96 S cm−1) among MOFs for single crystal measurements. This approach provides an ideal roadmap for producing highly conductive MOFs with great potential for applications in batteries, thermoelectric, supercapacitors and related areas.

Date: 2019
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DOI: 10.1038/s41467-019-09682-0

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