期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 14, 页码 4349-4352出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201411854
关键词
ammonia; conductivity; copper; metal-organic frameworks; sensors
资金
- Center for Excitonics, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001088]
- Camille and Henry Dreyfus Postdoctoral Program in Environmental Chemistry
- Sloan Foundation
- Research Corporation for Science Advancement
- 3M
- Army Research Office through Institute for Soldier Nanotechnologies
- NSF [ECS-0335765]
- [1122374]
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-hex-aiminotriphenylene), 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.
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