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Integration of a (–Cu–S–)n plane in a metal–organic framework affords high electrical conductivity
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Integration of a (–Cu–S–)n plane in a metal–organic framework affords high electrical conductivity
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Journal Article
Integration of a (–Cu–S–)n plane in a metal–organic framework affords high electrical conductivity
2019
Overview
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 {[Cu
2
(6-Hmna)(6-mn)]·NH
4
}
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(NO
3
)
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.
Metal–organic frameworks that contain metal–sulfur chains have been demonstrated to exhibit good electrical conductivity. Here, the authors integrate a 2D metal–sulfur plane into a metal–organic framework, reporting a single crystal with a high conductivity of 10.96 S/cm.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
