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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.chemmater.2c01552
|2 doi
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|a pubmed25n1158.xml
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|a (DE-627)NLM347631959
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|a (NLM)36248228
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Maria, Iuliana P
|e verfasserin
|4 aut
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|a Enhancing the Backbone Coplanarity of n-Type Copolymers for Higher Electron Mobility and Stability in Organic Electrochemical Transistors
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 19.10.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 The Authors. Published by American Chemical Society.
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|a Electron-transporting (n-type) conjugated polymers have recently been applied in numerous electrochemical applications, where both ion and electron transport are required. Despite continuous efforts to improve their performance and stability, n-type conjugated polymers with mixed conduction still lag behind their hole-transporting (p-type) counterparts, limiting the functions of electrochemical devices. In this work, we investigate the effect of enhanced backbone coplanarity on the electrochemical activity and mixed ionic-electronic conduction properties of n-type polymers during operation in aqueous media. Through substitution of the widely employed electron-deficient naphthalene diimide (NDI) unit for the core-extended naphthodithiophene diimide (NDTI) units, the resulting polymer shows a more planar backbone with closer packing, leading to an increase in the electron mobility in organic electrochemical transistors (OECTs) by more than two orders of magnitude. The NDTI-based polymer shows a deep-lying lowest unoccupied molecular orbital level, enabling operation of the OECT closer to 0 V vs Ag/AgCl, where fewer parasitic reactions with molecular oxygen occur. Enhancing the backbone coplanarity also leads to a lower affinity toward water uptake during cycling, resulting in improved stability during continuous electrochemical charging and ON-OFF switching relative to the NDI derivative. Furthermore, the NDTI-based polymer also demonstrates near-perfect shelf-life stability over a month-long test, exhibiting a negligible decrease in both the maximum on-current and transconductance. Our results highlight the importance of polymer backbone design for developing stable, high-performing n-type materials with mixed ionic-electronic conduction in aqueous media
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|a Journal Article
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|a Griggs, Sophie
|e verfasserin
|4 aut
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|a Rashid, Reem B
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|4 aut
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|a Paulsen, Bryan D
|e verfasserin
|4 aut
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|a Surgailis, Jokubas
|e verfasserin
|4 aut
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|a Thorley, Karl
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|4 aut
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|a Le, Vianna N
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|4 aut
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|a Harrison, George T
|e verfasserin
|4 aut
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|a Combe, Craig
|e verfasserin
|4 aut
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|a Hallani, Rawad
|e verfasserin
|4 aut
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|a Giovannitti, Alexander
|e verfasserin
|4 aut
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|a Paterson, Alexandra F
|e verfasserin
|4 aut
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|a Inal, Sahika
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|4 aut
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|a Rivnay, Jonathan
|e verfasserin
|4 aut
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|a McCulloch, Iain
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Chemistry of materials : a publication of the American Chemical Society
|d 1998
|g 34(2022), 19 vom: 11. Okt., Seite 8593-8602
|w (DE-627)NLM098194763
|x 0897-4756
|7 nnas
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| 773 |
1 |
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|g volume:34
|g year:2022
|g number:19
|g day:11
|g month:10
|g pages:8593-8602
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|u http://dx.doi.org/10.1021/acs.chemmater.2c01552
|3 Volltext
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