Synthesis and optimization solid-state order using side-chain position of thieno-isoindigo derivative-based D-A polymers for high-performance ambipolar organic thin films transistors
Two new polymers based on BTPBF unit were synthesized and characterized. Two polymers showed ultra broad absorption spectra (covering 400–1600 nm) and remarkably low bandgaps (ca. 0.8 eV). The planar structure and π-stacking orientation can be optimized by the positions of side-chains. Polymer exhibited excellent ambipolar mobilities of as high as over 0.8/0.19 cm2 V−1s−1.