Cu3(hexaiminotriphenylene)2: An electrically conductive 2D metal-organic framework for chemiresistive sensing

Michael G. Campbell; Dennis Sheberla; Sophie F. Liu; Timothy M. Swager; Mircea Dincə

doi:10.1002/anie.201411854

Cu₃(hexaiminotriphenylene)₂: An electrically conductive 2D metal-organic framework for chemiresistive sensing

Michael G. Campbell, Dennis Sheberla, Sophie F. Liu, Timothy M. Swager, Mircea Dincə

Research output: Contribution to journal › Article › peer-review

892 Scopus citations

Abstract

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, Cu₃(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 Cu₃(HITP)₂ dispersions function as reversible chemiresistive sensors, capable of detecting sub-ppm levels of ammonia vapor. Comparison with the isostructural 2D MOF Ni₃(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.

Original language	English (US)
Pages (from-to)	4349-4352
Number of pages	4
Journal	Angewandte Chemie - International Edition
Volume	54
Issue number	14
DOIs	https://doi.org/10.1002/anie.201411854
State	Published - Mar 27 2015
Externally published	Yes

All Science Journal Classification (ASJC) codes

Catalysis
General Chemistry

Keywords

ammonia
conductivity
copper
metal-organic frameworks
sensors

Access to Document

10.1002/anie.201411854

Cite this

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title = "Cu3(hexaiminotriphenylene)2: An electrically conductive 2D metal-organic framework for chemiresistive sensing",

abstract = "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, Cu3(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 Cu3(HITP)2 dispersions function as reversible chemiresistive sensors, capable of detecting sub-ppm levels of ammonia vapor. Comparison with the isostructural 2D MOF Ni3(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.",

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AU - Campbell, Michael G.

AU - Sheberla, Dennis

AU - Liu, Sophie F.

AU - Swager, Timothy M.

AU - Dincə, Mircea

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