From sky blue to orange red: Accomplishment of single-emitter full-color electroluminescence via manipulating intermolecular π-π interactions
作者:Zong Cheng、Tong Yang、Zhiqiang Li、Jixiong Liang、Chunhui Lin、Xiaoyue Mu、Yue Wang
DOI:10.1016/j.orgel.2019.105550
日期:2020.3
A thermally activated delayed fluorescence (TADF) emitter, named 4CzDBN, was developed with benzonitrile and carbazole groups. It's highly symmetrical and elongated framework was intentionally devised to form strong intermolecular π-π interactions in the condensed state. Through a series of detailed studies on the photophysical properties, single crystal structures and theoretical calculations of 4CzDBN
用苄腈和咔唑基团开发了一种名为4CzDBN的热活化延迟荧光(TADF)发射器。它的高度对称和细长的框架是有意设计的,以在凝聚态下形成强大的分子间π-π相互作用。通过对4CzDBN的光物理性质,单晶结构和理论计算的一系列详细研究,深入研究了分子结构调节对激发态性质的影响。最终,采用4CzDBN作为单发射器的有机发光二极管(OLED)实现了从天蓝色(480 nm)到橙红色(580 nm)在不同掺杂浓度下的全色发射,这是第一个单发射器全色OLED。 。