[17p-W2_402-1~14] 12.1 Fabrications and Structure Controls

2:00 PM - 2:15 PM JST(5:00 AM - 5:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[17p-W2_402-3] Fabrication of Oriented π-Conjugated Polymer Thin Films by Cooled Bar-Coating Method and Time-Resolved Measurement of Molecular Orientation

〇Kazuki Yasugi¹, Akihiko Fujii², Kazuma Nakajima¹, Hitoshi Kubo¹, Masanori Ozaki¹, Kenjiro Fukuda¹ (1.The Univ. of Osaka, 2.Osaka Inst. of Tech.)

Keywords:

Donor-acceptor conjugated polymer,Bar coating,Molecular orientation

We report a method for fabricating highly oriented thin films of the D–A type π-conjugated polymer PDPP-DTT in high-speed coating (50 mm/s) by controlling the drying rate via substrate cooling. At room temperature, using low-boiling-point solvents such as chloroform, rapid solvent evaporation yields non-oriented films. By cooling the substrate to −10°C and thereby suppressing solvent evaporation, we successfully fabricated highly oriented films. Furthermore, we discuss the mechanism of molecular orientation based on time-resolved orientation measurements.