Liu, Kejun; Réhault, Julien; Liang, Baokun; Hambsch, Mike; Zhang, Yingying; Seçkin, Sezer; Zhou, Yunxia; Shivhare, Rishi; Zhang, Peng; Polozij, Miroslav; König, Tobias A F; Qi, Haoyuan; Zhou, Shengqiang; Fery, Andreas; Mannsfeld, Stefan C B; Kaiser, Ute; Heine, Thomas; Banerji, Natalie; Dong, Renhao and Feng, Xinliang (2023). A Quasi-2D Polypyrrole Film with Band-Like Transport Behavior And High Charge Carrier Mobility. Advanced materials, 35(40), e2303288. Wiley 10.1002/adma.202303288
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Advanced_Materials_-_2023_-_Liu_-_A_Quasi_2D_Polypyrrole_Film_with_Band_Like_Transport_Behavior_And_High_Charge_Carrier.pdf - Accepted Version Available under License Publisher holds Copyright. Download (2MB) | Preview |
Quasi-two-dimensional conjugated polymers (q2DCPs) are polymers that consist of linear conjugated polymer chains assembled through non-covalent interactions to form a layered structure. In this work, w e report the synthesis of a novel crystalline q2D polypyrrole (q2DPPy) film at an air/H2 SO4 (95%) interface. The unique interfacial environment facilitated chain extension, prevented disorder, and resulted in a crystalline, layered assembly of protonated quinoidal chains with a fully extended conformation in its crystalline domains. This unique structure features highly delocalized π-electron systems within the extended chains, which is responsible for the low effective mass and narrow electronic bandgap. Thus w e investigated the temperature-dependent charge transport properties of q2DPPy using the van der Pauw (vdP) method and terahertz time-domain spectroscopy (THz-TDS). The vdP method revealed that the q2DPPy film exhibited a semiconducting behavior with a thermally activated hopping mechanism in long-range transport between the electrodes. Conversely, THz-TDS revealed a band-like transport, indicating intrinsic charge transport up to a record short-range high THz mobility of ∼107.1 cm2 V-1 s-1 . This article is protected by copyright. All rights reserved.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP) |
UniBE Contributor: |
Liu, Kejun, Réhault, Julien Emile, Shivhare, Rishi Ramdas, Banerji, Natalie |
Subjects: |
500 Science > 570 Life sciences; biology 500 Science > 540 Chemistry 000 Computer science, knowledge & systems |
ISSN: |
1521-4095 |
Publisher: |
Wiley |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
20 Jul 2023 10:43 |
Last Modified: |
20 Jul 2024 00:25 |
Publisher DOI: |
10.1002/adma.202303288 |
PubMed ID: |
37468165 |
Uncontrolled Keywords: |
Terahertz spectroscopy band-like transport conjugated polymers high mobility polypyrrole film |
BORIS DOI: |
10.48350/184956 |
URI: |
https://boris.unibe.ch/id/eprint/184956 |
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