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• W4310947377 endingPage "2210093" @default.
• W4310947377 startingPage "2210093" @default.
• W4310947377 abstract "The development of unipolar n-type semiconducting polymers with electron mobility (µe ) over 5 cm2 V-1 s-1 remains a massive challenge in organic semiconductors. Diketopyrrolopyrrole (DPP) has proven to be a successful unit for high-performance p-type and ambipolar polymers. However, DPP's moderate electron-accepting capability leads to the shallow frontier molecular orbital (FMO) levels of the resultant polymers and hence limit the µe in unipolar n-type organic transistors. Herein, this issue has been addressed by using a hybrid acceptor-modulation strategy based on DPP-containing fluorinated triple-acceptor architecture, namely DPP-difluorobenzothiadiazole-DPP (DFB). Compared with DFB's non-fluorinated counterpart, DFB features deeper FMO levels and a shape-persistent framework. Therefore, a series of DFB-based polymers demonstrate planar backbones and lowered FMO levels by ≈0.10 to 0.25 eV versus that of the control polymer. Intriguingly, all DFB-polymers exhibit excellent unipolar n-type transistor performances. Notably, a full-locked backbone conformation and high crystallinity with crystalline coherence length of 524 Å are observed for pDFB-TF, accounting for its high µe of 5.04 cm2 V-1 s-1 , which is the highest µe value for DPP-based unipolar n-type polymers reported to date. This work demonstrates that the strategy of fluorinated triple-acceptor architecture opens a new path towards high-performance unipolar n-type semiconducting polymers." @default.
• W4310947377 created "2022-12-21" @default.
• W4310947377 creator A5028070258 @default.
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• W4310947377 date "2022-12-21" @default.
• W4310947377 modified "2023-10-11" @default.
• W4310947377 title "A Hybrid Acceptor‐Modulation Strategy: Fluorinated Triple‐Acceptor Architecture for Significant Enhancement of Electron Transport in High‐Performance Unipolar n‐Type Organic Transistors" @default.
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• W4310947377 doi "https://doi.org/10.1002/adma.202210093" @default.
• W4310947377 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36484290" @default.
• W4310947377 hasPublicationYear "2022" @default.
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