Pronounced Side Chain Effects in Triple Bond-Conjugated Polymers Containing Naphthalene Diimides for n-Channel Organic Field-Effect Transistors
| Autor: | Suk Gyu Hahm, Tissa Sajoto, Donal D. C. Bradley, Youngkyoo Kim, Dongyoon Khim, Sungho Nam, Thomas D. Anthopoulos, Hwajeong Kim, Seth R. Marder, Moonhor Ree |
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| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Materials science 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Ring (chemistry) Triple bond 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Polymerization chemistry Polymer chemistry Side chain Copolymer Moiety General Materials Science 0210 nano-technology Imide Alkyl |
| Zdroj: | ACS Applied Materials & Interfaces. 10:12921-12929 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.8b01196 |
| Popis: | Three triple bond-conjugated naphthalene diimide (NDI) copolymers, poly{[N,N′-bis(2-R1)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-[(2,5-bis(2-R2)-1,4-phenylene)bis(ethyn-2,1-diyl)]} (PNDIR1-R2), were synthesized via Sonogashira coupling polymerization with varying alkyl side chains at the nitrogen atoms of the imide ring and 2,5-positions of the 1,4-diethynylbenzene moiety. Considering their identical polymer backbone structures, the side chains were found to have a strong influence on the surface morphology/nanostructure, thus playing a critical role in charge-transporting properties of the three NDI-based copolymers. Among the polymers, the one with an octyldodecyl (OD) chain at the nitrogen atoms of imide ring and a hexadecyloxy (HO) chain at the 2,5-positions of 1,4-diethynylbenzene, P(NDIOD-HO), exhibited the highest electron mobility of 0.016 cm2 V–1 s–1, as compared to NDI-based copolymers with an ethylhexyl chain at the 2,5-positions of 1,4-diethynylbenzene. The enhanced charge mobility... |
| Databáze: | OpenAIRE |
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