Water robustness of organic thin-film transistors based on pyrazino[2,3-g]quinoxaline-dione conjugated polymer
A robust air and water stable π-conjugated polymer based on pyrazino[2,3-g]quinoxaline-2,7-dione (PQD) modified with long alkyl side chains on both the donor and acceptor units (PQD-HD-4T-DD) was synthesized and demonstrated to be a novel semiconducting layer for highly air and water stable organic...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Online Access: | https://hdl.handle.net/10356/159634 |
| _version_ | 1826123883294490624 |
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| author | Ko, Jieun Ng, Chee Koon Arramel Wee, Andrew Thye Shen Tam, Dexter Teck Lip Leong, Wei Lin |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Ko, Jieun Ng, Chee Koon Arramel Wee, Andrew Thye Shen Tam, Dexter Teck Lip Leong, Wei Lin |
| author_sort | Ko, Jieun |
| collection | NTU |
| description | A robust air and water stable π-conjugated polymer based on pyrazino[2,3-g]quinoxaline-2,7-dione (PQD) modified with long alkyl side chains on both the donor and acceptor units (PQD-HD-4T-DD) was synthesized and demonstrated to be a novel semiconducting layer for highly air and water stable organic thin-film transistors (OTFTs). Due to the alkyl side chains on the donor and acceptor units, the polymer showed good hydrophobicity preventing water ingression into the crystalline regions of the polymer film. Moreover, the deep highest occupied molecular orbital (HOMO) level and shallow unoccupied molecular orbital (LUMO) level attributed to the contribution of the PQD moiety can prevent air oxidation and nucleophilic attack from water molecules, respectively. We show that the PQD-HD-4T-DD OTFT exhibits excellent electrical stability retaining 78% of its initial charge carrier mobility even after immersing the bottom-gate top-contact OTFT in deionized water for five days without encapsulation. |
| first_indexed | 2024-10-01T06:11:36Z |
| format | Journal Article |
| id | ntu-10356/159634 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:11:36Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1596342023-03-06T09:10:19Z Water robustness of organic thin-film transistors based on pyrazino[2,3-g]quinoxaline-dione conjugated polymer Ko, Jieun Ng, Chee Koon Arramel Wee, Andrew Thye Shen Tam, Dexter Teck Lip Leong, Wei Lin School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering::Molecular electronics Conjugated Polymers Thin Film Transistors A robust air and water stable π-conjugated polymer based on pyrazino[2,3-g]quinoxaline-2,7-dione (PQD) modified with long alkyl side chains on both the donor and acceptor units (PQD-HD-4T-DD) was synthesized and demonstrated to be a novel semiconducting layer for highly air and water stable organic thin-film transistors (OTFTs). Due to the alkyl side chains on the donor and acceptor units, the polymer showed good hydrophobicity preventing water ingression into the crystalline regions of the polymer film. Moreover, the deep highest occupied molecular orbital (HOMO) level and shallow unoccupied molecular orbital (LUMO) level attributed to the contribution of the PQD moiety can prevent air oxidation and nucleophilic attack from water molecules, respectively. We show that the PQD-HD-4T-DD OTFT exhibits excellent electrical stability retaining 78% of its initial charge carrier mobility even after immersing the bottom-gate top-contact OTFT in deionized water for five days without encapsulation. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) Nanyang Technological University Submitted/Accepted version W. L. L. would like to acknowledge funding support from her NTU start-up grant (M4081866), Ministry of Education (MOE) under AcRF Tier 2 grant (2018-T2-1-075), ASTAR AME IAF-ICP Grant (No. I1801E0030) and A*STAR AME Young Individual Research Grant (Project Number A1784c019). A. acknowledged a research grant from MOE Tier 3 programme (MOE2014-T3-1- 004). 2022-06-29T01:45:28Z 2022-06-29T01:45:28Z 2020 Journal Article Ko, J., Ng, C. K., Arramel, Wee, A. T. S., Tam, D. T. L. & Leong, W. L. (2020). Water robustness of organic thin-film transistors based on pyrazino[2,3-g]quinoxaline-dione conjugated polymer. Journal of Materials Chemistry C, 8(12), 4157-4163. https://dx.doi.org/10.1039/d0tc00543f 2050-7526 https://hdl.handle.net/10356/159634 10.1039/d0tc00543f 2-s2.0-85082858327 12 8 4157 4163 en M4081866 2018-T2-1-075 I1801E0030 A1784c019 MOE2014-T3-1- 004 Journal of Materials Chemistry C 10.21979/N9/JVHKQQ © 2020 The Royal Society of Chemistry. All rights reserved. This paper was published in Journal of Materials Chemistry C and is made available with permission of The Royal Society of Chemistry. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering::Molecular electronics Conjugated Polymers Thin Film Transistors Ko, Jieun Ng, Chee Koon Arramel Wee, Andrew Thye Shen Tam, Dexter Teck Lip Leong, Wei Lin Water robustness of organic thin-film transistors based on pyrazino[2,3-g]quinoxaline-dione conjugated polymer |
| title | Water robustness of organic thin-film transistors based on pyrazino[2,3-g]quinoxaline-dione conjugated polymer |
| title_full | Water robustness of organic thin-film transistors based on pyrazino[2,3-g]quinoxaline-dione conjugated polymer |
| title_fullStr | Water robustness of organic thin-film transistors based on pyrazino[2,3-g]quinoxaline-dione conjugated polymer |
| title_full_unstemmed | Water robustness of organic thin-film transistors based on pyrazino[2,3-g]quinoxaline-dione conjugated polymer |
| title_short | Water robustness of organic thin-film transistors based on pyrazino[2,3-g]quinoxaline-dione conjugated polymer |
| title_sort | water robustness of organic thin film transistors based on pyrazino 2 3 g quinoxaline dione conjugated polymer |
| topic | Engineering::Electrical and electronic engineering::Molecular electronics Conjugated Polymers Thin Film Transistors |
| url | https://hdl.handle.net/10356/159634 |
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