[7p-N304-1~16] 12.4 Organic light-emitting devices and organic transistors

2:45 PM - 3:00 PM JST(5:45 AM - 6:00 AM UTC)

[7p-N304-5] Crystal Structure Control of π-Extended Polycyclic Aromatic Hydrocarbons: Crystal Structure and OFET Properties of Methylchalcogeno-Coronene

〇Kirill Dmitrievich Bulgarevich¹, Pal Prasanta^1,2, Ryota Hanaki³, Kazuo Takimiya^1,2,3 (1.RIKEN, 2.AIMR Tohoku Univ., 3.Tohoku Univ.)

Keywords:

Single-Crystal Organic Field-Effect Transistors,Crystal Structure Control,Brickwork Structure

The charge transport properties of organic semiconductors strongly depend on intermolecular orbital overlap within their crystal structures. By position-selective methylchalcogenation, which induce brickwork structures across various pi-systems, we controlled the crystal structure of coronene derivatives and evaluated their charge transport properties. MT-coronene adopted the expected brickwork structure and exhibited a mobility of 0.5 cm2 V-1 s-1. In contrast, MO-coronene formed a herringbone structure and showed significantly lower mobility due to its zero-dimensional electronic structure.