n-Type semiconducting polymers based on an bithiophene imide-bridged isoindigo for organic field-effect transistors

Liu，Min1; Wang，Dong2,3; Li，Jianfeng2; Wang，Junwei2; Jeong，Sang Young3; Woo，Han Young3; Deng，Xianyu3; Yang，Kun2,4; Guo，Xugang2

2024-08-01

10.1016/j.dyepig.2024.112176

Dyes and Pigments   影响因子和分区

0143-7208

1873-3743

n-Type polymer semiconductors are essential for enabling high-performance organic electronic devices; however, their development still remains a challenge. Herein, we reported a new electron-deficient building block, i.e. bithiophene imide (BTI)-bridged isoindigo (IID), BTIID, through a Knoevenagel condensation reaction between the bisaldehyde BTI and the alkylated indolinones. Three donor-acceptor (D-A) copolymers were then successfully synthesized via standard Stille coupling reaction based on this novel building block, which exhibit highly planar backbones and low-lying lowest unoccupied molecular orbitals (LUMO) energy levels. When integrated into organic field-effect transistors (OFETs), these polymers demonstrated unipolar n-type transport characteristics with a highest electron mobility of 5.79 × 10 cm V s. Our research results indicate that the design of strong electron-withdrawing units via integrating two different electron-acceptor units into one single structure represents a promising strategy for developing n-type polymer semiconductors with low-lying LUMO energy levels.

EI

英语

其他

20241815996819

Condensation reactions ; Electrons ; Molecular orbitals ; Semiconducting polymers

Semiconducting Materials:712.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Physical Chemistry:801.4 ; Chemical Reactions:802.2 ; Atomic and Molecular Physics:931.3

CHEMISTRY

2-s2.0-85191319810

Scopus

1.School of Chemistry and Materials Engineering,Huizhou University,Huizhou,Guangdong,516007,China
2.Department of Materials Science and Engineering,Southern University of Science and Technology (SUSech),Shenzhen,No. 1088, Xueyuan Road, Guangdong,518055,China
3.Shenzhen Key Laboratory of Advanced Materials,School of Materials Science and Engineering,Harbin Institute of Technology,Shenzhen,Guangdong,518055,China
4.State Key Laboratory of Chemo/Biosensing and Chemometrics,College of Chemistry and Chemical Engineering,Hunan University,Changsha,Hunan,410082,China

Liu，Min,Wang，Dong,Li，Jianfeng,et al. n-Type semiconducting polymers based on an bithiophene imide-bridged isoindigo for organic field-effect transistors[J]. Dyes and Pigments,2024,227.

Liu，Min.,Wang，Dong.,Li，Jianfeng.,Wang，Junwei.,Jeong，Sang Young.,...&Guo，Xugang.(2024).n-Type semiconducting polymers based on an bithiophene imide-bridged isoindigo for organic field-effect transistors.Dyes and Pigments,227.

Liu，Min,et al."n-Type semiconducting polymers based on an bithiophene imide-bridged isoindigo for organic field-effect transistors".Dyes and Pigments 227(2024).