Ray, S.Panidi, J.Mukhopadhyay, T.Salzner, UlrikeAnthopoulos, T. D.Patil, S.2021-03-312021-03-312019http://hdl.handle.net/11693/76055An important strategy for realizing flexible complementary circuits with organic semiconductors is to achieve balanced ambipolar charge transport properties with reduced anisotropy. Here, we present a series of star-shaped diketopyrrolopyrrole (DPP)-based organic materials synthesized for improved intermolecular charge transport while retaining the ambipolar charge transport properties of their linear counterparts. Steady-state UV−visible spectroscopic studies confirm that the oligomers are highly aggregated in the thin film as evidenced from appearance of prominent vibronic features and red-shifted absorption bands. Ambipolar transport properties of these materials were verified in organic field-effect transistors (OFETs). The results show that the star-shaped DPP systems have the potential to outperform their linear counterparts in devicesEnglishDiketopyrrolopyrroleAmbipolar charge transportStar-shaped moleculeField-effect transistorTetraphenylethyleneArticle10.1021/acsaelm.9b003942637-6113