New tetraphenylethene-based efficient blue luminophors: aggregation induced emission and partially controllable emitting color
作者:Jing Huang、Xiao Yang、Jinyu Wang、Cheng Zhong、Lei Wang、Jingui Qin、Zhen Li
DOI:10.1039/c1jm14054j
日期:——
In this paper, two new TPE-based conjugated molecules, constructed using tetraphenylethene (TPE) and carbazole or spirofluorene moieties, have been successfully prepared. They exhibited aggregation induced emission (AIE) properties, high thermal and morphological stabilities, and low oxidation potential, making them promising properties for optoelectric materials. The fabricated non-doped multilayer OLEDs demonstrate that devices using these luminophors as the emitting layer show relatively good performance, and the device of SFTPE gives a maximum luminance and efficiency of 8196 cd m−2 and 3.33 cd A−1, respectively, with the maximum emission wavelength at about 466 nm, thanks to the adjusted molecular structure and AIE characteristic of TPE.
本文成功制备了两种基于 TPE 的新型共轭分子,它们由四苯基乙烯(TPE)和咔唑或螺芴分子构成。它们具有聚集诱导发射(AIE)特性、高热稳定性和形态稳定性以及低氧化电位,因此有望成为光电材料。所制备的非掺杂多层有机发光二极管表明,使用这些发光体作为发光层的器件具有相对较好的性能,而 SFTPE 器件的最大亮度和效率分别为 8196 cd m-2 和 3.33 cd A-1,最大发射波长约为 466 nm,这要归功于 TPE 调整的分子结构和 AIE 特性。