[11a-Z13-1~10] 12.1 Fabrications and Structure Controls

[11a-Z13-6] Film Preparation and Electric Properties of Diketopyrrolopyrrole Derivatives with a Face-on Orientation Based on Intermolecular Hydrogen Bonds

〇Yurika Teraoka¹, Yuna Suzuki¹, Minori Sakurai¹, Tomoyuki Koganezawa², Tomoyoshi Suenobu¹, Mitsuharu Suzuki¹, Ken-ichi Nakayama¹ (1.Osaka Univ., 2.JASRI)

Keywords:hydrogen bonding, molecular orientation, carrier mobility

Face-on orientation of π-conjugated molecules is important to improve the vertical carrier mobility in organic semiconductors. To induce the face-on orientation based on side-by-side intermolecular hydrogen bonding, diketopyrrolopyrrole (DPP) derivatives with pyridyl (py) units were employed to investigate thin-film properties. According to the results of the 2D-GIWAXS measurement, py-DPP derivatives showed face-on orientation on normal glass substrates. In particular, the amount ratio of face-on was higher in 3-py-DPP and 4-py-DPP than in 2-py-DPP, where the N position of the pyridyl group might dominate the molecular orientation.