TY - JOUR
T1 - n-Type Rigid Semiconducting Polymers Bearing Oligo(Ethylene Glycol) Side Chains for High-Performance Organic Electrochemical Transistors
AU - Chen, Xingxing
AU - Marks, Adam
AU - Paulsen, Bryan D.
AU - Wu, Ruiheng
AU - Rashid, Reem B.
AU - Chen, Hu
AU - Alsufyani, Maryam
AU - Rivnay, Jonathan
AU - McCulloch, Iain
N1 - Publisher Copyright:
© 2020 Wiley-VCH GmbH
PY - 2021/4/19
Y1 - 2021/4/19
N2 - N-type conjugated polymers as the semiconducting component of organic electrochemical transistors (OECTs) are still undeveloped with respect to their p-type counterparts. Herein, we report two rigid n-type conjugated polymers bearing oligo(ethylene glycol) (OEG) side chains, PgNaN and PgNgN, which demonstrated an essentially torsion-free π-conjugated backbone. The planarity and electron-deficient rigid structures enable the resulting polymers to achieve high electron mobility in an OECT device of up to the 10−3 cm2 V−1 s−1 range, with a deep-lying LUMO energy level lower than −4.0 eV. Prominently, the polymers exhibited a high device performance with a maximum dimensionally normalized transconductance of 0.212 S cm−1 and the product of charge-carrier mobility μ and volumetric capacitance C* of 0.662±0.113 F cm−1 V−1 s−1, which are among the highest in n-type conjugated polymers reported to date. Moreover, the polymers are synthesized via a metal-free aldol-condensation polymerization, which is beneficial to their application in bioelectronics.
AB - N-type conjugated polymers as the semiconducting component of organic electrochemical transistors (OECTs) are still undeveloped with respect to their p-type counterparts. Herein, we report two rigid n-type conjugated polymers bearing oligo(ethylene glycol) (OEG) side chains, PgNaN and PgNgN, which demonstrated an essentially torsion-free π-conjugated backbone. The planarity and electron-deficient rigid structures enable the resulting polymers to achieve high electron mobility in an OECT device of up to the 10−3 cm2 V−1 s−1 range, with a deep-lying LUMO energy level lower than −4.0 eV. Prominently, the polymers exhibited a high device performance with a maximum dimensionally normalized transconductance of 0.212 S cm−1 and the product of charge-carrier mobility μ and volumetric capacitance C* of 0.662±0.113 F cm−1 V−1 s−1, which are among the highest in n-type conjugated polymers reported to date. Moreover, the polymers are synthesized via a metal-free aldol-condensation polymerization, which is beneficial to their application in bioelectronics.
KW - metal-free aldol condensation
KW - n-type conjugated polymers
KW - oligo(ethylene glycol) side chains
KW - organic electrochemical transistors
KW - rigid semiconducting polymers
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U2 - 10.1002/anie.202013998
DO - 10.1002/anie.202013998
M3 - Article
C2 - 33368944
AN - SCOPUS:85102336931
SN - 1433-7851
VL - 60
SP - 9368
EP - 9373
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 17
ER -