Mixed Electronic-Ionic Polymers Based on Highly Conductive Polymer Cluster
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Organic based conductive polymers have attracted much attention as potential multifunctional thermoelectric materials for efficient energy harvesting at room temperature, self-healing, color or fluorescence switching, stretchability, and ease of doping processability. Herein, n-type thermoelectric polymer cluster was synthesized from ionic polymer and PEDOT with formation of biocompatible bisulfate. Nano-assembly of active polymers in a mixed ionic-electronic conductor was demonstrated to achieve a high thermoelectric performance. The composition contents was precisely controlled to afford a transparent and self-healable film. Bisulfate formation in the film state and thermodiffusion of anion carrier was monitored by a bisulfate-detecting coumarin molecule due to its transparency. Also, multicolor film was demonstrated by mixing composite solution and dye inks. Finally, a self-powered body-worn energy harvester was demonstrated under ambient condition which could be useful for environmentally benign electronics.