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

1:30 PM - 1:45 PM JST(4:30 AM - 4:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[17p-W2_402-1] Development of Novel TTF-Based Nanocrystals via Nanoscale Electrocrystallization and Their Physical Properties

〇Taichi Oribe^1,2, Hiroyuki Hasegawa^1,2, Toshiki Yamada², Akira Otomo² (1.Shimane Univ., 2.NICT)

Keywords:

nanoscale electrocrystallization,nanocrystal,nanofabrication

We have developed a nanoscale electrocrystallization method that enables site-selective formation of organic nanocrystals in the gap between two electrodes on a substrate. Using tetrathiafulvalene (TTF) with tetrabutylammonium nitrate (TBA·NO₃) as a supporting electrolyte, we previously fabricated TTF·(NO₃)_0.55 nanocrystals exhibiting weak n-type field-effect responses. In this study, the supporting electrolyte was changed to thiocyanate (SCN^-) salt to develop novel TTF-based nanocrystals. Needle-shaped nanocrystals were obtained, and single-crystal X-ray structural analysis revealed one-dimensional π-stacked structures of TTF molecules. The crystals were found to contain disordered SCN^- counteranions. Field-effect measurements showed weak n-type responses similar to those of TTF·(NO₃)_0.55 nanocrystals, suggesting that counteranion disorder may affect carrier transport in the nanocrystals.