申请人:WuHan TianMa Micro-electronics CO., LTD
公开号:US11335863B2
公开(公告)日:2022-05-17
A compound, having a structure represented by Formula (I),
in which L is selected from the group consisting of a substituted or unsubstituted phenyl, a substituted or unsubstituted naphthyl, a substituted or unsubstituted pyridyl, a substituted or unsubstituted pyrimidinyl, and a substituted or unsubstituted pyrazinyl; and D is an electron donor and is selected from the group consisting of a substituted or unsubstituted phenyl, biphenyl, naphthyl, anthryl, phenanthryl, acenaphthylenyl, pyrenyl, perylenyl, fluorenyl, spirobifluorenyl, chrysenyl, benzophenanthrenyl, benzanthracenyl, fluoranthenyl, picenyl, furyl, benzofuryl, dibenzofuryl, thienyl, benzothienyl, dibenzothiophenyl, phenoxazinyl, phenazinyl, phenothiazinyl, thianthrenyl, carbazolyl, acridinyl, and diarylamino. The compound according to the present disclosure has the TADF property, and the triplet excitons, which are blocked in molecular transition of the conventional fluorescent material, can be used to emit light, thereby improving the efficiency of device.
具有式 (I) 所代表结构的化合物、
其中 L 选自由取代或未取代的苯基、取代或未取代的
萘基、取代或未取代的
吡啶基、取代或未取代的
嘧啶基和取代或未取代的
吡嗪基组成的组;D 是电子供体,选自由取代或未取代的苯基、
联苯基、
萘基、
蒽基、
菲基、
苊烯基、
芘基、过
芘基、
芴基、螺双
芴基、胆
蒽基、苯并
蒽基、苯并
菲基、苯并
芘基、苯并苯并
菲基、苯并
蒽基、
氟蒽基、
吡蒽基、
呋喃基、
苯并呋喃基、
二苯并呋喃基、
噻吩基、
苯并噻吩基、
二苯并噻吩基、苯并噁嗪基、苯并嗪基、苯并
噻嗪基、
噻蒽基、
咔唑基、
吖啶基和二芳基
氨基。本公开的化合物具有 TADF 特性,可利用传统荧光材料分子跃迁中受阻的三重激子发光,从而提高器件的效率。