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A Dual‐Ligand Porous Coordination Polymer Chemiresistor with Modulated Conductivity and Porosity
Authors: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
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
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