Efficient molecular doping of polymeric semiconductors improved by coupled reaction.

Pan, Jiahao; Wang, Jing; Li, Kuncai; Dai, Xu; Li, Qing; Chong, Daotong; Chen, Bin; Yan, Junjie et al. · Nat Commun · 2024

basic_science · Level V

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Abstract

Exploring chemical doping method to improve the electrical conductivity of polymers is still very attractive for researchers. In this work, we report a developed method of doping a polymer semiconductor aided by the coupled reaction that commonly exists in biological systems where a non-spontaneous reaction is driven by a spontaneous reaction. During the doping process, the chemical reaction between the dopant and the polymer is promoted by introducing a thermodynamically favorable reaction via adding additives that are highly reactive to the reduction product of the dopant to form a coupled reaction, thus significantly improving the electrical conductivity of polymers by 3-7 orders. This coupled reaction doping process shows the potential of wide applications in exploring efficient doping systems to prepare functional conducting polymers, which could be a powerful tool for modern organic electronics.