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Cu 3 (hexaiminotriphenylene) 2 : An Electrically Conductive 2D Metal–Organic Framework for Chemiresistive Sensing
Author(s) -
Campbell Michael G.,
Sheberla Dennis,
Liu Sophie F.,
Swager Timothy M.,
Dincă Mircea
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201411854
Subject(s) - isostructural , electrical conductor , metal organic framework , electrically conductive , copper , electrical resistivity and conductivity , materials science , nanotechnology , conductivity , metal , ammonia , chemical engineering , optoelectronics , chemistry , crystal structure , crystallography , metallurgy , composite material , adsorption , organic chemistry , electrical engineering , engineering
The utility of metal–organic frameworks (MOFs) as functional materials in electronic devices has been limited to date by a lack of MOFs that display high electrical conductivity. Here, we report the synthesis of a new electrically conductive 2D MOF, Cu 3 (HITP) 2 (HITP=2,3,6,7,10,11‐hexaiminotriphenylene), which displays a bulk conductivity of 0.2 S cm −1 (pellet, two‐point‐probe). Devices synthesized by simple drop casting of Cu 3 (HITP) 2 dispersions function as reversible chemiresistive sensors, capable of detecting sub‐ppm levels of ammonia vapor. Comparison with the isostructural 2D MOF Ni 3 (HITP) 2 shows that the copper sites are critical for ammonia sensing, indicating that rational design/synthesis can be used to tune the functional properties of conductive MOFs.