Dicarbazolyldicyanobenzenes as Thermally Activated Delayed Fluorescence Emitters: Effect of Substitution Position on Photoluminescent and Electroluminescent Properties
Compound, composition, organic electroluminescent element and electronic device
申请人:IDEMITSU KOSAN CO., LTD
公开号:US11271164B2
公开(公告)日:2022-03-08
A compound is represented by a formula (2) below. In the formula (2), at least one pair of a pair of X1 and X2, a pair of X2 and X3, a pair of X3 and X4, a pair of X4 and X5, a pair of X7 and X8, a pair of X8 and X9, a pair of X10 and X11, a pair of X11 and X12, a pair of X12 and X13, and a pair of X16 and X1 are carbon atoms to be bonded to a structure represented by as formula (2a) or (2b) below,
Organic electroluminescence element and electronic device
申请人:IDEMITSU KOSAN CO., LTD.
公开号:US10651398B2
公开(公告)日:2020-05-12
An organic electroluminescence device includes an anode, a cathode, a first organic layer interposed between the anode and the cathode, a second organic layer interposed between the first organic layer and the cathode, and a bipolar layer interposed between the first organic layer and the second organic layer and having bipolar characteristics, in which at least one of the first organic layer and the second organic layer includes the first compound and the second compound, the first compound exhibits delayed fluorescence, and an energy gap T77K(M2) at 77[K] of the second compound is larger than an energy gap T77K(M1) at 77[K] of the first compound.
Organic electroluminescence device and electronic device
申请人:IDEMITSU KOSAN CO., LTD.
公开号:US11043638B2
公开(公告)日:2021-06-22
An organic electroluminescence device includes an anode, an emitting layer and a cathode, in which the emitting layer includes a first compound and a second compound. The first compound is a delayed-fluorescent compound. The second compound is represented by a formula (2) below, in which X is a nitrogen atom or a carbon atom bonded to Y; R21 to R26 are each independently a hydrogen atom or a substituent; Z21 and Z22 are each independently selected from the group consisting of a halogen atom, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group, and a substituted or unsubstituted aryloxy group.
一种有机电致发光器件包括阳极、发光层和阴极,其中发光层包括第一种化合物和第二种化合物。第一种化合物是延迟荧光化合物。第二化合物由下式(2)表示,其中 X 是氮原子或与 Y 键合的碳原子;R21 至 R26 各自独立地为氢原子或取代基;Z21 和 Z22 各自独立地选自由卤素原子、取代或未取代的芳基、取代或未取代的烷氧基和取代或未取代的芳氧基组成的组。