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Sequential Solution Polymerization of Poly(3,4-Ethylenedioxythiophene) Using V2O5 as Oxidant for Flexible Touch Sensors

17 Pages Posted: 12 Oct 2018 Sneak Peek Status: Published

See all articles by Rui Chen

Rui Chen

Chongqing University - MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems

Kuan Sun

Chongqing University - MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems

Qi Zhang

Chongqing University - MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems

Yongli Zhou

Chongqing University - MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems

Meng Li

Chongqing University - MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems

Yuyang Sun

Chongqing University - MOE Key Laboratory of Dependable Service Computing in Cyber Physical Society

Zhou Wu

Chongqing University - MOE Key Laboratory of Dependable Service Computing in Cyber Physical Society

Yuyang Wu

Chongqing University - School of Materials Science and Engineering

Xinlu Li

Chongqing University - School of Materials Science and Engineering

Jialei Xi

Chengdu Mobius Technology

Chi Ma

Chengdu Mobius Technology

Yiyang Zhang

Chengdu Mobius Technology

Jianyong Ouyang

National University of Singapore (NUS) - Department of Materials Science and Engineering

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Abstract

Various in-situ synthesis methods have been developed for the polymerization of 3,4-ethylenedioxythiophene (EDOT) monomers, such as electro-polymerization (EP), oxidative chemical vapor deposition (OCVD) and vapor phase polymerization (VPP). Additional to these existing techniques, here a novel and facile method is introduced to fabricate highly conductive poly(3,4-ethylenedioxythiophene) (PEDOT) films in-situ by solution means. The process contains sequential deposition of oxidants and monomers. V2O5 is introduced as the oxidant in this synthetic route. Excess reactants and by-products can be completely removed from the PEDOT film by MeOH-rinsing. The obtained PEDOT films possess good crystallinity and high doping level, with carrier concentration three orders of magnitude higher than the commercial product (PH1000, Heraeus GmbH). The electrical conductivity of the as-cast PEDOT film reaches up to 1420 S/cm. In addition, this method is fully compatible with large-scale printing techniques. A 15 cm × 12 cm PEDOT film is printed on polyethylene terephthalate (PET) substrate by bar coating. These PEDOT conducting films enable the realization of flexible touch sensors, which demonstrate superior flexibility and sensitivity. The low-cost and highly efficient synthetic method shows great potential for large-scale production of PEDOT films that have wide applications in electromagnetic shielding, antistatic coating, sensor, etc.

Suggested Citation

Chen, Rui and Sun, Kuan and Zhang, Qi and Zhou, Yongli and Li, Meng and Sun, Yuyang and Wu, Zhou and Wu, Yuyang and Li, Xinlu and Xi, Jialei and Ma, Chi and Zhang, Yiyang and Ouyang, Jianyong, Sequential Solution Polymerization of Poly(3,4-Ethylenedioxythiophene) Using V2O5 as Oxidant for Flexible Touch Sensors (October 11, 2018). Available at SSRN: https://ssrn.com/abstract=3264943 or http://dx.doi.org/10.2139/ssrn.3264943
This is a paper under consideration at Cell Press and has not been peer-reviewed.

Rui Chen

Chongqing University - MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems

Chongqing 400044, Chongqing 400030
China

Kuan Sun

Chongqing University - MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems ( email )

Chongqing 400044, Chongqing 400030
China

Qi Zhang

Chongqing University - MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems

Chongqing 400044, Chongqing 400030
China

Yongli Zhou

Chongqing University - MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems

Chongqing 400044, Chongqing 400030
China

Meng Li

Chongqing University - MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems

Chongqing 400044, Chongqing 400030
China

Yuyang Sun

Chongqing University - MOE Key Laboratory of Dependable Service Computing in Cyber Physical Society

Chongqing 400044, Chongqing 400030
China

Zhou Wu

Chongqing University - MOE Key Laboratory of Dependable Service Computing in Cyber Physical Society

Chongqing 400044, Chongqing 400030
China

Yuyang Wu

Chongqing University - School of Materials Science and Engineering

Chongqing 400044, Chongqing 400030
China

Xinlu Li

Chongqing University - School of Materials Science and Engineering

Chongqing 400044, Chongqing 400030
China

Jialei Xi

Chengdu Mobius Technology

Sichuan, 610015
China

Chi Ma

Chengdu Mobius Technology

Sichuan, 610015
China

Yiyang Zhang

Chengdu Mobius Technology

Sichuan, 610015
China

Jianyong Ouyang (Contact Author)

National University of Singapore (NUS) - Department of Materials Science and Engineering

Bukit Timah Road 469 G
Singapore, 117591
Singapore

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