Volume 62, Issue 38 e202307647
Research Article

Semiconducting Polymers Based on Simple Electron-Deficient Cyanated trans-1,3-Butadienes for Organic Field-Effect Transistors

Dr. Jianfeng Li

Dr. Jianfeng Li

Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), 518055 Shenzhen, Guangdong, China

These authors contributed equally to this work.

Search for more papers by this author
Dr. Zhicai Chen

Corresponding Author

Dr. Zhicai Chen

Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), 518055 Shenzhen, Guangdong, China

Department State Key Laboratory of Marine Resource Utilization in South China Sea, College of Materials Science and Engineering, Hainan University, 570228 Haikou, Hainan, China

These authors contributed equally to this work.

Search for more papers by this author
Junwei Wang

Junwei Wang

Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), 518055 Shenzhen, Guangdong, China

Search for more papers by this author
Sang Young Jeong

Sang Young Jeong

Research Institute for Natural Sciences, Department of Chemistry, Korea University, 02841 Seoul, South Korea

Search for more papers by this author
Dr. Kun Yang

Dr. Kun Yang

State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, 410082 Changsha, Hunan, China

Search for more papers by this author
Dr. Kui Feng

Dr. Kui Feng

Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), 518055 Shenzhen, Guangdong, China

Search for more papers by this author
Jie Yang

Jie Yang

Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), 518055 Shenzhen, Guangdong, China

Search for more papers by this author
Dr. Bin Liu

Dr. Bin Liu

Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), 518055 Shenzhen, Guangdong, China

Search for more papers by this author
Prof. Dr. Han Young Woo

Prof. Dr. Han Young Woo

Research Institute for Natural Sciences, Department of Chemistry, Korea University, 02841 Seoul, South Korea

Search for more papers by this author
Prof. Dr. Xugang Guo

Corresponding Author

Prof. Dr. Xugang Guo

Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), 518055 Shenzhen, Guangdong, China

Songshan Lake Materials Laboratory, 523808 Dongguan, Guangdong, China

Search for more papers by this author
First published: 31 July 2023
Citations: 12

Graphical Abstract

Sequentially introducing fluorine and cyano functionalities onto trans-1,3-butadiene has led to a series of structurally simple but highly electron-deficient building blocks for semiconducting polymers having unipolar n-type transport character with electron mobilities of >1 cm2 V−1 s−1 in organic field-effect transistors. The study offers inspiration for developing structurally simple electron-deficient units for high-performance n-type polymers.

Abstract

Developing high-performance but low-cost n-type polymers remains a significant challenge in the commercialization of organic field-effect transistors (OFETs). To achieve this objective, it is essential to design the key electron-deficient units with simple structures and facile preparation processes, which can facilitate the production of low-cost n-type polymers. Herein, by sequentially introducing fluorine and cyano functionalities onto trans-1,3-butadiene, we developed a series of structurally simple but highly electron-deficient building blocks, namely 1,4-dicyano-butadiene (CNDE), 3-fluoro-1,4-dicyano-butadiene (CNFDE), and 2,3-difluoro-1,4-dicyano-butadiene (CNDFDE), featuring a highly coplanar backbone and deep-positioned lowest unoccupied molecular orbital (LUMO) energy levels (−3.03–4.33 eV), which render them highly attractive for developing n-type semiconducting polymers. Notably, all these electron-deficient units can be easily accessed by a two-step high-yield synthetic procedure from low-cost raw materials, thus rendering them highly promising candidates for commercial applications. Upon polymerization with diketopyrrolopyrrole (DPP), three copolymers were developed that demonstrated unipolar n-type transport characteristics in OFETs with the highest electron mobility of >1 cm2 V−1 s−1. Hence, CNDE, CNFDE, and CNDFDE represent a class of novel, simple, and efficient electron-deficient units for constructing low-cost n-type polymers, thereby providing valuable insight for OFET applications.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.