Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 32, Issue 16, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202111439
Keywords
conjugated polymer; green chemistry; n-type organic semiconductor; organic electrochemical transistor; sustainable design
Categories
Funding
- National Natural Science Foundation of China [21875291, 21702240]
- China Postdoctoral Foundation [2021M693580]
- Knut and Alice Wallenberg Foundation [KAW2015.0178]
- Swedish Research Council [2018-03483]
- Royal Swedish Academy of Sciences [2018-03483]
- European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant [101025599]
- Swedish Research Council (VR, International Postdoc Grant) [2017-06381]
- Swedish Research Council [2017-06381, 2018-03483] Funding Source: Swedish Research Council
- Marie Curie Actions (MSCA) [101025599] Funding Source: Marie Curie Actions (MSCA)
Ask authors/readers for more resources
This study reports a series of novel donor-acceptor-conjugated polymers for n-type organic electrochemical transistors (OECTs) synthesized through an economic and environmentally friendly method. The polymers exhibit high electron mobility and ionic conductivity, resulting in high-performance OECTs. Analysis of the microstructure of the devices reveals the reasons behind their superior performance. The design strategy provides a metal-free and inexpensive route for synthesizing n-type OECTs.
As new and better materials are implemented for organic electrochemical transistors (OECTs), it becomes increasingly important to adopt more economic and environmentally friendly synthesis pathways with respect to conventional transition-metal-catalyzed polymerizations. Herein, a series of novel n-type donor-acceptor-conjugated polymers based on glycolated lactone and bis-isatin units are reported. All the polymers are synthesized via green and metal-free aldol polymerization. The strong electron-deficient lactone-building blocks provide low-lying lowest unoccupied molecular orbital (LUMO) and the rigid backbone needed for efficient electron mobility up to 0.07 cm(2) V-1 s(-1). Instead, polar atoms in the backbone and ethylene glycol side chains contribute to the ionic conductivity. The resulting OECTs exhibit a normalized maximum transconductance g(m,norm) of 0.8 S cm(-1) and a mu C* of 6.7 F cm(-1) V-1 s(-1). Data on the microstructure show that such device performance originates from a unique porous morphology together with a highly disordered amorphous microstructure, leading to efficient ion-to-electron coupling. Overall, the design strategy provides an inexpensive and metal-free polymerization route for high-performing n-type OECTs.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available