[17a-B409-1~9] 12.1 Fabrications and Structure Controls

[17a-B409-5] Crystallization of aromatic molecules with five-membered ring structure by naphthalene flux method and their FET properties

〇Seiya Yokokura¹, Hirohiko Tanoguchi¹, Takuma Yuki¹, Taro Nagahama¹, Toshihiro Shimada¹ (1.Hokkaido Univ.)

Keywords:organic semiconductors, organic crystals, organic transistors

Conjugate extension is one of the effective methods for designing high-mobility organic semiconductor materials. However, when the molecular size becomes too large, solubility decreases and crystallization becomes difficult. In this study, single crystals of aromatic molecules with a five-membered ring structure were obtained by a crystallization method using naphthalene, which dissolves conjugated molecules well, as a solvent. We report on the crystal structure analysis, various physical properties measurements, theoretical calculations, and FET properties of the obtained crystals.