Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 138, Issue 11, Pages 3679-3686Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b10445
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Funding
- Center for Advanced Soft Electronics under the Global Frontier Research Program of the Ministry of Science, ICT and Future Planning, Korea [2011-0031628]
- National Research Foundation of Korea (NRF) grant - Korea government (MSIP) [2015R1A2A1A10055620]
- National Research Foundation of Korea [21A20151513130, 2011-0031628, 21A20151713274] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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While high-mobility p-type conjugated polymers have been widely reported, high-mobility n-type conjugated polymers are still rare. In the present work, we designed semifluorinated alkyl side chains and introduced them into naphthalene diimide-based polymers (PNDIF-T2 and PNDIF-TVT). We found that the strong self-organization of these side chains induced a high degree of order in the attached polymer backbones by forming a superstructure composed of backbone crystals and side-chain crystals. This phenomenon was shown to greatly enhance the ordering along the backbone direction, and the resulting polymers thus exhibited unipolar n-channel transport in field-effect transistors with remarkably high electron mobility values of up to 6.50 cm(2) V-1 s(-1) and with a high on-off current ratio of 10(5).
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