High‐Performance, Flexible NO2 Chemiresistors Achieved by Design of Imine‐Incorporated n‐Type Conjugated Polymers
Abstract Flexible and mechanically robust gas sensors are the key technologies for wearable and implantable electronics. Herein, the authors demonstrate the high‐performance, flexible nitrogen dioxide (NO2) chemiresistors using a series of n‐type conjugated polymers (CPs: PNDIT2/IM‐x) and a polymer...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-05-01
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| Series: | Advanced Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/advs.202200270 |
| _version_ | 1828346038481584128 |
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| author | Hyeonjung Park Dong‐Ha Kim Boo Soo Ma Euichul Shin Youngkwon Kim Taek‐Soo Kim Felix Sunjoo Kim Il‐Doo Kim Bumjoon J. Kim |
| author_facet | Hyeonjung Park Dong‐Ha Kim Boo Soo Ma Euichul Shin Youngkwon Kim Taek‐Soo Kim Felix Sunjoo Kim Il‐Doo Kim Bumjoon J. Kim |
| author_sort | Hyeonjung Park |
| collection | DOAJ |
| description | Abstract Flexible and mechanically robust gas sensors are the key technologies for wearable and implantable electronics. Herein, the authors demonstrate the high‐performance, flexible nitrogen dioxide (NO2) chemiresistors using a series of n‐type conjugated polymers (CPs: PNDIT2/IM‐x) and a polymer dopant (poly(ethyleneimine), PEI). Imine double bonds (C = N) are incorporated into the backbones of the CPs with different imine contents (x) to facilitate strong and selective interactions with NO2. The PEI provides doping stability, enhanced electrical conductivity, and flexibility. As a result, the NO2 sensors with PNDIT2/IM‐0.1 and PEI (1:1 by weight ratio) exhibit outstanding sensing performances, such as excellent sensitivity (ΔR/Rb = 240% @ 1 ppm), ultralow detection limit (0.1 ppm), high selectivity (ΔR/Rb < 8% @ 1 ppm of interfering analytes), and high stability, thereby outperforming other state‐of‐the‐art CP‐based chemiresistors. Furthermore, the thin film of PNDIT2/IM‐0.1 and PEI blend is stretchable and mechanically robust, providing excellent flexibility to the NO2 sensors. Our study contributes to the rational design of high‐performance flexible gas sensors. |
| first_indexed | 2024-04-14T00:21:16Z |
| format | Article |
| id | doaj.art-d6591cacbfda4529b715993c3abfb691 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-04-14T00:21:16Z |
| publishDate | 2022-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-d6591cacbfda4529b715993c3abfb6912022-12-22T02:22:58ZengWileyAdvanced Science2198-38442022-05-01914n/an/a10.1002/advs.202200270High‐Performance, Flexible NO2 Chemiresistors Achieved by Design of Imine‐Incorporated n‐Type Conjugated PolymersHyeonjung Park0Dong‐Ha Kim1Boo Soo Ma2Euichul Shin3Youngkwon Kim4Taek‐Soo Kim5Felix Sunjoo Kim6Il‐Doo Kim7Bumjoon J. Kim8Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of KoreaDepartment of Materials Science and Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of KoreaDepartment of Mechanical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of KoreaDepartment of Materials Science and Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of KoreaDepartment of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of KoreaDepartment of Mechanical Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of KoreaDepartment of Chemical Engineering and Materials Science Chung‐Ang University (CAU) Seoul 06974 Republic of KoreaDepartment of Materials Science and Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of KoreaDepartment of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of KoreaAbstract Flexible and mechanically robust gas sensors are the key technologies for wearable and implantable electronics. Herein, the authors demonstrate the high‐performance, flexible nitrogen dioxide (NO2) chemiresistors using a series of n‐type conjugated polymers (CPs: PNDIT2/IM‐x) and a polymer dopant (poly(ethyleneimine), PEI). Imine double bonds (C = N) are incorporated into the backbones of the CPs with different imine contents (x) to facilitate strong and selective interactions with NO2. The PEI provides doping stability, enhanced electrical conductivity, and flexibility. As a result, the NO2 sensors with PNDIT2/IM‐0.1 and PEI (1:1 by weight ratio) exhibit outstanding sensing performances, such as excellent sensitivity (ΔR/Rb = 240% @ 1 ppm), ultralow detection limit (0.1 ppm), high selectivity (ΔR/Rb < 8% @ 1 ppm of interfering analytes), and high stability, thereby outperforming other state‐of‐the‐art CP‐based chemiresistors. Furthermore, the thin film of PNDIT2/IM‐0.1 and PEI blend is stretchable and mechanically robust, providing excellent flexibility to the NO2 sensors. Our study contributes to the rational design of high‐performance flexible gas sensors.https://doi.org/10.1002/advs.202200270conjugated polymer‐based chemiresistorsflexible sensorshigh‐performance chemiresistorsimine bondsNO2 gas sensors |
| spellingShingle | Hyeonjung Park Dong‐Ha Kim Boo Soo Ma Euichul Shin Youngkwon Kim Taek‐Soo Kim Felix Sunjoo Kim Il‐Doo Kim Bumjoon J. Kim High‐Performance, Flexible NO2 Chemiresistors Achieved by Design of Imine‐Incorporated n‐Type Conjugated Polymers Advanced Science conjugated polymer‐based chemiresistors flexible sensors high‐performance chemiresistors imine bonds NO2 gas sensors |
| title | High‐Performance, Flexible NO2 Chemiresistors Achieved by Design of Imine‐Incorporated n‐Type Conjugated Polymers |
| title_full | High‐Performance, Flexible NO2 Chemiresistors Achieved by Design of Imine‐Incorporated n‐Type Conjugated Polymers |
| title_fullStr | High‐Performance, Flexible NO2 Chemiresistors Achieved by Design of Imine‐Incorporated n‐Type Conjugated Polymers |
| title_full_unstemmed | High‐Performance, Flexible NO2 Chemiresistors Achieved by Design of Imine‐Incorporated n‐Type Conjugated Polymers |
| title_short | High‐Performance, Flexible NO2 Chemiresistors Achieved by Design of Imine‐Incorporated n‐Type Conjugated Polymers |
| title_sort | high performance flexible no2 chemiresistors achieved by design of imine incorporated n type conjugated polymers |
| topic | conjugated polymer‐based chemiresistors flexible sensors high‐performance chemiresistors imine bonds NO2 gas sensors |
| url | https://doi.org/10.1002/advs.202200270 |
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