Side-chain engineering of self-doped conjugated polyelectrolytes for organic electrochemical transistors

A series of conjugated polyelectrolytes (CPEs) containing cyclopentadithiophene- alt -benzothiadiazole were synthesized. Their alkyl chain length was varied from 2-5 carbons in order to investigate the effects on their optical, electrochemical and morphological properties. CPEs are mixed conductors...

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Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2023-06, Vol.11 (24), p.8274-8283
Main Authors: Llanes, Luana C, Lill, Alexander T, Wan, Yangyang, Chae, Sangmin, Yi, Ahra, Nguyen-Dang, Tung, Kim, Hyo Jung, Sepunaru, Lior, Read de Alaniz, Javier, Lu, Gang, Bazan, Guillermo C, Nguyen, Thuc-Quyen
Format: Article
Language:English
Subjects:
Molecular structure
Optical properties
Polyelectrolytes
Transconductance
Transistors
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Summary:A series of conjugated polyelectrolytes (CPEs) containing cyclopentadithiophene- alt -benzothiadiazole were synthesized. Their alkyl chain length was varied from 2-5 carbons in order to investigate the effects on their optical, electrochemical and morphological properties. CPEs are mixed conductors and can be used as the active layer in accumulation mode organic electrochemical transistors (OECTs). Their transconductance, volumetric capacitance, and ionic and electronic conductivity are dependent on their alkyl chain length. DFT calculations help explain the differences in the ease of doping as a function of molecular structure. Varied-length conjugated polyelectrolytes (2-5 methylene units) containing CPDT- alt -BT were synthesized to study the optical, electrochemical, and morphological properties. These were used in accumulation mode organic electrochemical transistors.
ISSN:2050-7526
2050-7534
DOI:10.1039/d3tc00355h