Spiro-Lochtransportmaterialien mit Verlängerter Pi-Konjugationslänge am Rand

Details

Veröffentlichungs-Nr.

EP4406944

Aktenzeichen

EP23153617

Anmeldetag

27. Januar 2023

Veröffentlichung

29. Oktober 2025

Erteilung

29. Oktober 2025

Rechtsraum

EP

IPC

C07D307/77C07C213/02C07C217/84C07C217/92C07C217/94C07D307/91H10K30/00H10K85/60

Abstract

The invention concerns spirobifluorene compounds having the following structure: <img class="EMIRef" id="1a80cd79-a041-438c-8c97-925aa69126ca-ia01" /> wherein R<1> and R<3> are both ring structures containing one or more aromatic or heteroaromatic rings, R<1> and R<3> not both being phenyl at the same time, and the -R<1>-(R<2>)<n> and -R<3>-(R<2>)<n> structures are selected from the group consisting of: (1) phenyl, (2) biphenyl, (3) naphthyl, (4) triphenylamine; (5) dibenzofuran joined through its ring position 2 to a N atom of compound I; (6) triphenylamine vinyl; (7) dibenzofuran joined through its ring position 1 to a N atom of compound I; (8) napthalene-benzofuran; (9) 4-pyridinyl-phenyl; (10) 2,2-bithienyl; (11) spirofluorenoxanthene; and (12) fused thienyl, wherein each R<2> substituent where present is methoxy. The spirobifluorene compounds are organic hole transporting materials (HTMs) useful to increase power conversion efficiency (PCE) of perovskite solar cells (PSCs).

Anmelder

Firma

TOYOTA JIDOSHA KABUSHIKI KAISHA

Land

🇯🇵 Japan

Fachgebiete