Enrichment of Semiconducting Single-Walled Carbon Nanotubes with Indigo-Fluorene-Based Copolymers and Their Use in Printed Thin-Film Transistors and Carbon Dioxide Gas Sensors
| Autor: | Jianying Ouyang, Zhao Li, Jacques Lefebvre, Homin Shin, Patrick R. L. Malenfant, Arnold J. Kell, Jianfu Ding, François Lapointe, Chang Guo |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Transistors Electronic Polymers high-purity semiconducting SWCNT Bioengineering thin-film transistors 02 engineering and technology Carbon nanotube Fluorene Indigo Carmine 01 natural sciences law.invention chemistry.chemical_compound law Amide Copolymer Instrumentation Fluid Flow and Transfer Processes chemistry.chemical_classification Fluorenes Nanotubes Carbon carbon dioxide sensor Process Chemistry and Technology 010401 analytical chemistry polymeric materials Polymer Carbon Dioxide 021001 nanoscience & nanotechnology 0104 chemical sciences Carbon dioxide sensor chemistry Chemical engineering Thin-film transistor Amine gas treating printed and flexible electronics 0210 nano-technology |
| Zdroj: | ACS Sensors. 5:2136-2145 |
| ISSN: | 2379-3694 |
| Popis: | High-purity semiconducting single-walled carbon nanotubes (sc-SWCNTs) are promising for portable and high-sensitivity gas sensors because of their excellent physical and electrical properties. Here, we describe the synthesis of a novel indigo-fluorene-based copolymer (PFIDBoc) that has been designed to selectively enrich sc-SWCNTs with excellent purity (>99.9%) yet contain a latent function in the form of a tert-butoxy (t-BOC)-protected amine that can be later revealed and exploited for carbon dioxide (CO₂) gas sensing. SWCNTs wrapped with the PFIDBoc polymer can be easily converted via an on-chip thermal process to reveal a vinylogous amide moiety with a secondary amine nitrogen within the indigo building block of the copolymer which is perfectly suited for CO₂ recognition. Thin-film transistors and sensors were inkjet-printed onto rigid and flexible substrates, demonstrating the versatility of enriched PFIDBoc-derived sc-SWCNT dispersions. The printed transistors exhibited a mobility up to 9 cm² V⁻¹ s⁻¹ and on/off current ratios >10⁵. We further demonstrate herein a CO₂ sensor for indoor air quality monitoring even in low humidity environments, possessing a linear response with up to ∼5.4% sensitivity and a dynamic range between 400 and 2000 ppm in air with a relative humidity of ∼ 40%. |
| Databáze: | OpenAIRE |
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