专利号:EP-4471014-A1 优先权日:2023-05-29 标 题 :Derivate of quinoxaline with thermally activated delayed fluorescence 发明人:SERDIUK ILLIA; MONKA MICHAL; GRZYWACZ DARIA 权利人:UNIV GDANSKI 摘要:The invention relates to the triarylamine derivatives of quinoxaline with thermally activated delayed fluorescence (TADF) bearing heavy atoms and methods of their synthesis. The emitters are characterized by spectral and photophysical properties with improved TADF parameters as compared to their analogues reported before. The disclosed emitters can convert triplet excitons into singlet ones faster and with higher efficiency. The emitters cover orange, red, and/or near infrared (NIR) spectral ranges. Furthermore, the mixtures of new emitters with fluorescent dopants exhibit narrowband NIR emission preserving fast triplet-singlet exciton conversion.The invention concerns functional organic materials which exhibit TADF and can be potentially used for the electroluminescence applications, e.g. in organic light emitting diodes (OLED), and/or applications of materials with long-lived excited states, e.g. photosensibilization, photocatalysis, and/or other fields where excited triplet states or excitons play important role.
专利号:WO-2022052135-A1 优先权日:2020-09-14 标 题 :Chiral thermally activated delayed fluorescence material and preparation method therefor 发明人:TANG JIANXIN; XIE FENGMING; LI YANQING; ZHOU JINGXIONG; ZENG XINYI 权利人:UNIV SOOCHOW 摘要:The present invention relates to a chiral thermally activated delayed fluorescence (TADF) material and a preparation method therefor. The chiral TADF material is R/S-18,21-bis(10H-phenoxazine-10-yl)-3,4,5,6,7,8,9,10-octahydrodibenz[a,c]dinaphtho[2',1':5,6;1',2':7,8][1,4]dioxin[2,3-i]phenazine or R/S-16,17-bis(4-(10H-phenoxazine-10-yl)phenyl)-3,4,5,6,7,8,9,10-octahydrodinaphtho[2',1':5,6;1',2':7,8][1,4]dioxane[2,3-g]quinoxaline. The provided compound has the characteristics of rigid large-plane twisted structure and significant intramolecular charge transfer (ICT) effect, and has the typical advantages such as TADF property, circular polarization (CPL) property, high photoluminescence quantum yield (PLQY), and good thermal stability. Moreover, the chiral TADF material has few synthesis and preparation steps, readily available raw materials, simple synthesis and purification processes, and high yield, and can be synthesized and prepared on a large scale.
专利号:CN-116283721-A 优先权日:2023-01-05 标题:Simultaneously generate two kinds of active oxygen near-infrared photosensitizer and its synthesis method and application