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

Jing Ma | Zendy; Zhiyuan Zhao | Zendy; Yunlong Guo | Zendy; Hua Geng | Zendy; Yanan Sun | Zendy; Jianwu Tian | Zendy; Qiming He | Zendy; Zhengxu Cai | Zendy; XiSha Zhang | Zendy; Guanxin Zhang | Zendy; Zitong Liu | Zendy; Deqing Zhang | Zendy; Yunqi Liu | Zendy

Open Access

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

Author(s) -

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

Publication year - 2019

Publication title -

acs applied materials and interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.535

H-Index - 228

eISSN - 1944-8252

pISSN - 1944-8244

DOI - 10.1021/acsami.9b00531

Subject(s) - side chain , materials science , branching (polymer chemistry) , conjugated system , thin film transistor , alkyl , polymer , crystallinity , diimide , organic semiconductor , polymer chemistry , chemical engineering , nanotechnology , optoelectronics , organic chemistry , molecule , composite material , chemistry , perylene , layer (electronics) , engineering

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 cm 2 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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