NOVEL BENZOTHIENOINDOLE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT ELEMENT IN WHICH NOVEL BENZOTHIENOINDOLE DERIVATIVE IS USED

摘要

This benzothienoindole derivative is represented by general formula (1). This compound has a benzothienoindole ring structure, and has the following characteristics (A)-(E) due to the benzothienoindole ring structure. (A) the hole injection characteristics are good; (B) the hole mobility is high; (C) the electron blocking ability is excellent; (D) the thin film state is stable; and (E) the heat resistance is excellent. This benzothienoindole derivative is useful as a hole transport material that is used in organic EL elements.