The Effects of Methoxy Functionalization of Conjugated Backbones on The Doping and Thermoelectric Properties of Diketopyrrolopyrrole-Based Conjugated Polymers
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In this study, the effects of methoxy functionalization of conjugated backbones on the doping and thermoelectric properties are investigated through a comparative study of diketopyrrolopyrrole-based conjugated polymers with and without methoxy groups (P29DPP-BTOM and P29DPP-BT, respectively). It results in methoxy-functionalization significantly enhancing doping efficiency, converting undopable pairs to dopable ones. Consequently, the methoxy-functionalized polymer showed higher optimized thermoelectric performance compared to the non-methoxy-functionalized one. This study demonstrates the impact of methoxy-functionalization of a conjugated polymer on doping behavior and thermoelectric properties, providing a guideline for designing high-performance conjugated polymers for thermoelectric applications.