公开(公告)号：US20220274952A1

公开(公告)日：2022-09-01

申请号：US17630859

申请日：2020-07-22

Applicant: TOSOH CORPORATION ,  SAGAMI CHEMICAL RESEARCH INSTITUTE

Inventor： Naoki UCHIDA ,  Hidenori AIHARA ,  Takuya YAMAGATA ,  Naoki HAYAKAWA ,  Natsumi NAKAJIMA ,  Kazuki HATTORI ,  Fuminari UEHARA ,  Yohei ONO ,  Masaya HIRANO ,  Yuta MORINAKA ,  Keisuke NOMURA ,  Eriko OHTA ,  Tomohiro SHONO ,  Kana OIKE ,  Kazushi HAYASHI ,  Keiya AOYAGI ,  Kosuke SATO ,  Toshiki NISHIURA

IPC: C07D401/10 ,  H01L51/50 ,  H01L51/00 ,  C07D209/86 ,  C07D487/14 ,  C07D307/91 ,  C07D251/24 ,  C07D401/14 ,  C07F5/02 ,  C07F7/08 ,  C07C255/46

Abstract: An object of the present invention is to provide a cyclic azine compound exhibiting both excellent driving voltage characteristics and excellent current efficiency characteristics. The desired cyclic azine compound has a specific structure represented by formula (1).

公开(公告)号：US20250051250A1

公开(公告)日：2025-02-13

申请号：US18721316

申请日：2022-12-06

Applicant: TOSOH CORPORATION ,  SAGAMI CHEMICAL RESEARCH INSTITUTE

Inventor： Fuminari UEHARA ,  Naoki UCHIDA ,  Kana OIKE ,  Yasuhiro TAKAHASHI ,  Kazuki HATTORI ,  Shintaro NOMURA ,  Hidenori AIHARA ,  Naoki HAYAKAWA ,  Shuya MATSUMOTO

IPC: C07C15/38 ,  H10K50/15 ,  H10K50/16 ,  H10K85/60

Abstract: Provided are a diamantane compound with which an organic electroluminescent device that can exhibit excellent luminous efficiency characteristics, more preferably excellent drive voltage characteristics and excellent luminous efficiency characteristics, can be produced, and an organic electroluminescent device material containing the diamantane compound. Also provided is an organic electroluminescent device that can achieve luminous efficiency characteristics, more preferably drive voltage characteristics and luminous efficiency characteristics, at high levels.
A diamantane compound has a group represented by formula (1) below and a group represented by formula (2) below. (In formula (1), carbon atoms of a diamantane ring are optionally substituted with an aryl group having 6 to 12 carbon atoms. In formula (1), * represents a bond, and a represents an integer of 1 to 6.)