Acetal-Functionalized Indacenodithiophene (IDT): Controlling the Position of a Lewis Acidic Dopant for Improved Thermoelectricity
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Brand-new acetal-functionalized indacenodithiophene (IDT) moieties were created in this study. Because of their high charge-carrier mobility in the amorphous state, conductive polymers with IDT units are promising candidates for synthesizing high-performance thermoelectric materials because they have the potential to reduce thermal conductivity without affecting their electric conductivity. However, IDT-containing polymers have low conductivity. Herein, we propose a novel strategy to control the dopant position near the benzylic position of the polymer backbone via a Lewis acid–base pair between a novel acetal-functionalized IDT (IDTa) unit and a dopant, nitrosyl hexafluorophosphate. Our research presents a novel strategy for simultaneously enhancing electrical conductivity and reducing thermal conductivity. This ultimately leads to the development of high-performance thermoelectric material.