| Download | - View supplementary information: 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 (PDF, 1.5 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1021/acssensors.0c00764 |
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| Author | Search for: Guo, Chang1ORCID identifier: https://orcid.org/0000-0002-5833-8552; Search for: Ouyang, Jianying1; Search for: Shin, Homin1ORCID identifier: https://orcid.org/0000-0001-9300-6898; Search for: Ding, Jianfu1; Search for: Li, Zhao1; Search for: Lapointe, François1ORCID identifier: https://orcid.org/0000-0002-5645-8745; Search for: Lefebvre, Jacques1ORCID identifier: https://orcid.org/0000-0001-5118-0580; Search for: Kell, Arnold J.1; Search for: Malenfant, Patrick R. L.1ORCID identifier: https://orcid.org/0000-0001-5391-2300 |
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| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Subject | polymeric materials; high-purity semiconducting SWCNT; thin-film transistors; carbon dioxide sensor; printed and flexible electronics |
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| Abstract | 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%. |
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| Publication date | 2020-07-24 |
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| Publisher | American Chemical Society |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | d762ebfb-7647-4419-9174-bd8a1aa94d2e |
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| Record created | 2021-06-15 |
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| Record modified | 2021-06-15 |
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