journal article·2019-05-01Open access

Improving the Electronic Transporting Property for Flexible Field-Effect Transistors with Naphthalene Diimide-Based Conjugated Polymer through Branching/Linear Side-Chain Engineering Strategy

Jing Ma, Zhiyuan Zhao, Yunlong Guo, Hua Geng, Yanan Sun, Jianwu Tian, Qiming He, Zhengxu Cai, Xisha Zhang, Guanxin Zhang, Zitong Liu, Deqing Zhang, Yunqi Liu

ACS Applied Materials & Interfaces· Volume 11· Issue 17

Abstract

n-Type organic/polymeric semiconductors with high electron mobilities are highly demanded for future flexible organic circuits. Except for developing a new conjugated backbone, recent studies show that side-chain engineering also plays an indispensable role in boosting the charge-transporting property. In this paper, we report a new polymer PNDI2T-DTD with a representative n-type naphthalene diimide (NDI)–bithiophene backbone for high-performance n-type flexible thin-film transistors through branching/linear side-chain engineering strategy. Serving as the flexible side chains, the linear/branching side-chain pattern is found to be effective in tuning the preaggregation behavior in solution and the packing ordering of polymeric chains, resulting in the improvement of thin-film crystallinity. The electron mobility of the thin film of PNDI2T-DTD on flexible substrates can reach 1.52 cm2 V–1 s–1, which is approximately five times higher than that of PNDI2T-DT with the same conjugated backbone and only branching alkyl chains.
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Research context

OpenAlex topics: Organic Electronics and Photovoltaics · Conducting polymers and applications · Thin-Film Transistor Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Beijing National Laboratories for Molecular Sciences, CAS Key Laboratories of Organic Solids, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China

University of Chinese Academy of Sciences, Beijing 100049, P. R. China

Department of Chemistry, Capital Normal University, Beijing 100048, P. R. China

Institute for Molecular Engineering, The University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637, United States

Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Material Science & Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China

Funding

National Natural Science Foundation of China · Chinese Academy of Sciences · Ministry of Science and Technology of the People's Republic of China · The National Postdoctoral Program for Innovative Talents

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