Investigations on diketopyrrolopyrrole (DPP) and isomeric Fluorinated-Benzothiadiazole-based polymers
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We report the effects rendered on the relevant intrinsic phsical and optoelectric properties and organic field-effect transistors device function by the degree of regioregularity, diketopyrrolopyrrole (DPP) and Fluorinated-Benzothiadiazole-based isomorphic polymers I.e., regiorandom and regioregular polymers, respectively, are synthesiezed and characterized. In addition, finely modulated banching side chains ((e-branched chain) are addopted to the DPP polymer main backbone. The subtle change in the brancing point far away from the backbone alters the π−π stacking and the lamellar distances between polymer backbones which has a significant influence on the charge-transport properties and in turn the performances of field-effect transistors (FETs).