NOVEL BENZOTHIENO BENZOTHIOPHENE DERIVATIVE, AND HOLE TRANSPORT MATERIAL AND ORGANIC EL ELEMENT PREPARED THEREWITH

摘要

PROBLEM TO BE SOLVED: To provide a novel compound being a hole transport material for use in an organic EL element with high efficiency and high durability, and having high hole mobility and excellent heat resistance, and a hole transport material and an organic EL element prepared therewith.;SOLUTION: The present invention provides a benzothieno benzothiophene derivative represented by the following compound (DBTBT-ABN, or DBTBT-TOL), and a hole transport material and an organic EL element prepared therewith.;SELECTED DRAWING: None;COPYRIGHT: (C)2018,JPO&INPIT