[11a-S2-1~11] 12.1 Fabrications and Structure Controls

11:30 AM - 11:45 AM JST(2:30 AM - 2:45 AM UTC)

[11a-S2-10] Fabrication of π-Conjugated Polymer Thin Films by a Rotational Bar Coating Method and Control of Molecular Orientation Direction

〇Kazuki Yasugi¹, Akihiko Fujii², Kazuma Nakajima¹, Hitoshi Kubo¹, Masanori Ozaki¹, Kenjiro Fukuda¹ (1.UOsaka, 2.OIT)

Keywords:

Donor-acceptor conjugated polymer,Bar coating,Molecular orientation

We report a method for controlling the molecular orientation direction of the D–A type π-conjugated polymer PDPP-DTT in high-speed coating (10 mm/s) by regulating the bar rotation speed. Conventional high-speed coating has faced the challenge that the orientation direction is limited to the coating direction. By rotating the coating bar during deposition, we successfully achieved highly controlled orientation ranging from the coating direction to the perpendicular direction. Furthermore, we discuss the mechanism of molecular orientation based on time-resolved measurements and surface observations.