a.Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Optoelectronic Materials & Technology, Jianghan University, Wuhan 430056, China
b.Beijing National Laboratory for Molecular Sciences, the Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Author bio:
libw@jhun.edu.cn (B.W.L.)
wanxb@jhun.edu.cn (X.B.W.)
Funds:
This work was supported by the National Natural Science Foundation of China (Nos. 22102086 and 22075105) and the start-up funding from Jianghan University.;Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-023-3043-y.
Li, B. W.; Xiong, M.; Liu, M. H.; Li, Z. G.; Sang, L.; Xiong, Z. H.; Xiao, B.; Pei, J.; Wan, X. B. Thiazoloisoindigo-based polymer semiconductors: synthesis, structure-property relationship, charge carrier polarity, and field-effect transistor performance. Chinese J. Polym. Sci. 2024, 42, 24–31
Bo-Wen Li, Miao Xiong, Mei-Hua Liu, et al. Thiazoloisoindigo-based Polymer Semiconductors: Synthesis, Structure-Property Relationship, Charge Carrier Polarity, and Field-Effect Transistor Performance[J]. Chinese Journal of Polymer Science, 2024, 42(1): 24-31.
Li, B. W.; Xiong, M.; Liu, M. H.; Li, Z. G.; Sang, L.; Xiong, Z. H.; Xiao, B.; Pei, J.; Wan, X. B. Thiazoloisoindigo-based polymer semiconductors: synthesis, structure-property relationship, charge carrier polarity, and field-effect transistor performance. Chinese J. Polym. Sci. 2024, 42, 24–31DOI: 10.1007/s10118-023-3043-y.
Bo-Wen Li, Miao Xiong, Mei-Hua Liu, et al. Thiazoloisoindigo-based Polymer Semiconductors: Synthesis, Structure-Property Relationship, Charge Carrier Polarity, and Field-Effect Transistor Performance[J]. Chinese Journal of Polymer Science, 2024, 42(1): 24-31.DOI: 10.1007/s10118-023-3043-y.
Two new polymers based on based on thiophene-flanked thiazoloisoindigo (Th-TzII) were synthesized by simply copolymerizing it with bisthiophene and bisthiazole
and the charge carrier polarity can be adjusted between unipolar hole transport and bipolar transport
which provides an effective molecular design strategy for further optimization of polymer OFET performance.
Abstract
Developing new polymeric semiconductors with excellent device performance is essential for organic electronics. Herein
we synthesized two new thiazoloisoindigo (TzII)-based polymers
namely
P(TzII-dTh-dTh) and P(TzII-dTh-dTz)
by copolymerizing thiophene-flanked TzII with bithiophene and bithiazole
respectively. Owing to the more electron-deficient nature of bithiazole than bithiophene
P(TzII-dTh-dTz) possesses deeper LUMO/HOMO levels of −3.45/−5.47 eV than P(TzII-dTh-dTh) (−3.34/−5.32 eV). The organic field-effect transistor (OFET) devices based on P(TzII-dTh-dTh) exhibited p-type behaviors with an average hole mobility value as high as 1.43 cm
2
·V
−1
·s
−1
while P(TzII-dTh-dTz) showed typical ambipolar characteristics with average hole and electron mobilities of 0.38 and 0.56 cm
2
·V
−1
·s
−1
. In addition
we compared the performances of both polymers with other TzII-based polymers reported in our previous work
and showed that the charge carrier polarity can be manipulated by adjusting the number of the thiophene units between the acceptor unit. As the increase of the number of thiophene rings
charge carrier polarity shifts from electron-dominated ambipolar transport to hole-dominated ambipolar transport and then to unipolar hole transport in OFETs
which provides an effective molecular design strategy for further optimization of polymer OFET performance.
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Lv,S.Y.;Li,Q.Y.;Li,B.W.;Wang,J.Y.;Mu,Y.B.;Li,L.;Pei,J.;Wan,X.B.Thiazole-flankedthiazoloisoindigoasamonomerforbalancedambipolarpolymericfield-effecttransistors. Chinese J. Polym. Sci. 2022 , 40 ,1131−1140..
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Thiazole-Flanked Thiazoloisoindigo as a Monomer for Balanced Ambipolar Polymeric Field-effect Transistors
Finely Tuned Electron/Hole Transport Preference of Thiazoloisoindigo- based Conjugated Polymers by Incorporation of Heavy Chalcogenophenes
Alternating Poly(ether-alt-ester)s with High Glass Transition Temperature Enabled by Rotationally Constrained Biaryl Units
Improvements of Hydrophobicity and Toughness of Epoxy Coatings Modified with Hydroxyl-terminated Fluororubber
End-group and Side-chain Dual-engineering of Selenium-fused Acceptors for 20.08% Efficiency Polymer Solar Cells with Low Energy Loss
相关作者
Jian Pei
Liang Li
You-Bing Mu
Jie-Yu Wang
Si-Yu Lv
Qi-Yi Li
Xiao-Bo Wan
You-Bing Mu
相关机构
School of Materials Science and Engineering, Wuhan Institute of Technology
Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Chemical & Environmental Engineering, Jianghan University
Qingdao Institute of Bioenergy & Bioprocess Technology, Chinese Academy of Sciences