High-mobility organic mixed conductors with a low synthetic complexity index via direct arylation polymerization
Journal article, 2024

Through direct arylation polymerization, a series of mixed ion-electron conducting polymers with a low synthetic complexity index is synthesized. A thieno[3,2-b]thiophene monomer with oligoether side chains is used in direct arylation polymerization together with a wide range of aryl bromides with varying electronic character from electron-donating thiophene to electron-accepting benzothiadiazole. The obtained polymers are less synthetically complex than other mixed ion-electron conducting polymers due to higher yield, fewer synthetic steps and less toxic reagents. Organic electrochemical transistors (OECTs) based on a newly synthesized copolymer comprising thieno[3,2-b]thiophene with oligoether side chains and bithiophene exhibit excellent device performance. A high charge-carrier mobility of up to μ = 1.8 cm2 V−1 s−1 was observed, obtained by dividing the figure of merit [μC*] from OECT measurements by the volumetric capacitance C* from electrochemical impedance spectroscopy, which reached a value of more than 215 F cm−3

Author

Joost Kimpel

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Youngseok Kim

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Jesika Asatryan

University of A Coruña

Jaime Martín

University of A Coruña

Renee Kroon

Linköping University

Christian Müller

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Chemical Science

2041-6520 (ISSN) 2041-6539 (eISSN)

Vol. 15 20 7679-7688

Subject Categories

Cell and Molecular Biology

Organic Chemistry

DOI

10.1039/d4sc01430h

More information

Latest update

7/2/2024 5