1. Layer-by-Layer Assembled Conductive Metal-Organic Framework Nanofilms for Room-Temperature Chemiresistive Sensing
- Author
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Guo-Dong Wu, Wenhua Li, Gang Xu, Zhihua Fu, Wei-Hua Deng, Xiao-Jing Lv, and Ming-Shui Yao
- Subjects
Chemiresistor ,Fabrication ,Materials science ,business.industry ,Layer by layer ,Nanotechnology ,General Chemistry ,02 engineering and technology ,General Medicine ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Epitaxy ,01 natural sciences ,Catalysis ,0104 chemical sciences ,Crystallinity ,Optoelectronics ,Metal-organic framework ,Thin film ,business ,0210 nano-technology ,Electrical conductor - Abstract
The utility of electronically conductive metal-organic frameworks (EC-MOFs) in high performance devices has been limited to date by a lack of high quality thin film. Here, we report the controllable thin film fabrication of an EC-MOF, Cu3(HHTP)2, (HHTP=2,3,6,7,10,11-hexahydroxytriphenylene), by a spray layer-by-layer liquid-phase epitaxial method. The EC-MOF thin film can not only be precisely prepared among 10 ~ 100 nm in thickness with increment of ~ 2 nm per growing cycle, but also show smooth surface, good crystallinity and high orientation. The chemiresistor gas sensor based on this high quality Cu3(HHTP)2 thin film is one of the best room temperature sensors for NH3 in all reported sensors based on various materials.
- Published
- 2017
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