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Layer-by-layer assembled dual-ligand conductive MOF nano-films with modulated chemiresistive sensitivity and selectivity
- Source :
- Nano Research. 14:438-443
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- In this paper, a dual-ligand design strategy is demonstrated to modulate the performance of the electronically conductive metalorganic frameworks (EC-MOFs) thin film with a spray layer-by-layer assembly method. The thin film not only can be precisely prepared in nanometer scale (20–70 nm), but also shows the pin-hole-free smooth surface. The high quality nano-film of 2,3,6,7,10,11-hexaiminotriphenylene (HITP) doped Cu-HHTP enables the precise modulation of the chemiresistive sensitivity and selectivity. Selectivity improvement over 220% were realized for benzene vs. NH3, as well as enhanced response and recovery properties. In addition, the selectivity of the EC-MOF thin film sensors toward other gases (e.g. triethylamine, methane, ethylbenzene, hydrogen, butanone, and acetone) vs. NH3 at room temperature is also discussed.
- Subjects :
- Materials science
Butanone
Doping
Layer by layer
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Ethylbenzene
Atomic and Molecular Physics, and Optics
0104 chemical sciences
chemistry.chemical_compound
chemistry
Chemical engineering
Nano
General Materials Science
Nanometre
Electrical and Electronic Engineering
Thin film
0210 nano-technology
Selectivity
Subjects
Details
- ISSN :
- 19980000 and 19980124
- Volume :
- 14
- Database :
- OpenAIRE
- Journal :
- Nano Research
- Accession number :
- edsair.doi...........8cfab602a6275be66fc05e0d8f197754