Extremely Electron-Withdrawing Lewis-Paired CN Groups for Organic p-Dopants
- Authors
- Suh, Eui Hyun; Beom Kim, Sang; Jung, Jaemin; Jang, Jaeyoung
- Issue Date
- Sep-2023
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- Deep LUMO Level; Doping Stability; Lewis-Paired CN Groups; Organic Semiconductors; Organic p-Dopants
- Citation
- ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.62, no.37, pp.1 - 7
- Indexed
- SCIE
SCOPUS
- Journal Title
- ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
- Volume
- 62
- Number
- 37
- Start Page
- 1
- End Page
- 7
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/193006
- DOI
- 10.1002/anie.202304245
- ISSN
- 1433-7851
- Abstract
- P-type chemical doping (p-doping) is a key technique to modulate the optical, electrical, and electronic properties of organic semiconductors. However, typical functional groups in organic p-dopants have insufficient electron-withdrawing strength, and the inevitable diffusion of dopants in host matrices degrades doping stabilities. Herein, we utilize extremely electron-withdrawing Lewis-paired CN groups as a new class of building blocks for designing unprecedentedly strong organic p-dopants with excellent doping stability. Various Lewis acids are paired with CN-functionalized conjugated molecules in the solution state, which strengthens the electron-withdrawing properties of CN groups almost twofold. The large dopants afford outstanding doping stability against continuous heating and long-term atmospheric exposure, which is promising for practical applications in devices. Given the broad applicability of this simple combinatorial approach, it may impact many fields of (opto)electronics.
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