Presentation Information
[9p-PB1-2]Thermally Induced Growth of Organic Semiconductor Monolayers on Self-Assembled Monolayers
〇(M1)Takuma Endo1, Yih-Ren Chang1, Masatoshi Kitamura1, Yoshiaki Hattori1 (1.Kobe Univ.)
Keywords:
organic monolayer
Liquid-crystalline organic semiconductors are promising materials for flexible electronics. In this study, the effects of substrate surface modification on the monolayer growth of C8-BTBT were investigated. Au substrates were modified with pentafluorobenzenethiol (PFBT) or 1-octadecanethiol (ODT) self-assembled monolayers. A 0.02 wt% C8-BTBT solution in toluene was deposited using a piezoelectric inkjet system, and morphological changes during heating were observed by optical microscopy. On the PFBT-modified surface, a ring-shaped precursor film gradually transformed into a monolayer during heating. In contrast, a thick droplet-like film remained on the ODT-modified surface, preventing monolayer formation. These results indicate that precursor film morphology strongly influences C8-BTBT monolayer growth.