Non-doped OLEDs based on anthracene derivatives with aggregation-induced emission and piezochromism properties

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED Dyes and Pigments Pub Date : 2024-10-13 DOI:10.1016/j.dyepig.2024.112491

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Abstract

The utilization of anthracene as the core to construct conjugated organic materials typically allows for the display of a range of optical and electroluminescent properties. In this study, two anthracene derivatives containing triphenylamine/diphenylamine and 4,6-diphenyl-1,3,5-triazine moieties 4-(10-(4,6-diphenyl-1,3,5-triazin-2-yl)anthracen-9-yl)-N,N-diphenylaniline (TPAAnTrz) and 10-(4,6-diphenyl-1,3,5-triazin-2-yl)-N,N-diphenylanthracen-9-amine (DPAAnTrz) have been synthesized and investigated systematically. It was found that these two obtained compounds exhibit a noticeable aggregation-induced emission (AIE) effect and reversible piezofluorochromic (PFC) behavior. In comparison to DPAAnTrz, TPAAnTrz demonstrates relatively weak intermolecular interactions and a distorted molecular structure, leading to more prominent piezofluorochromic behavior. TPAAnTrz exhibited weaker intermolecular interactions and a distorted molecular structure compared to DPAAnTrz, leading to more pronounced piezofluorochromic behavior. By utilizing TPAAnTrz and DPAAnTrz as emitters, the non-doped devices can exhibit maximum efficiencies of 13.2 and 10.1 cd/A, respectively, with negligible efficiency roll-off, even at high brightness levels. This demonstrates a significant potential for optoelectronic devices with high performance.

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基于蒽衍生物的非掺杂有机发光二极管具有聚集诱导发射和压电变色特性

以蒽为核心构建共轭有机材料通常可以显示出一系列光学和电致发光特性。在这项研究中，两种蒽衍生物含有三苯胺/二苯胺和 4,6-二苯基-1,3,5-三嗪分子 4-(10-(4,6-二苯基-1,3,5-三嗪-2-基)蒽-9-基)-N、合成并系统研究了 4-(10-(4,6-二苯基-1,3,5-三嗪-2-基)蒽-9-基)-N,N-二苯基蒽-9-胺 (TPAAnTrz) 和 10-(4,6-二苯基-1,3,5-三嗪-2-基)-N,N-二苯基蒽-9-胺 (DPAAnTrz)。研究发现，这两种化合物具有明显的聚集诱导发射（AIE）效应和可逆的压氟变色（PFC）行为。与 DPAAnTrz 相比，TPAAnTrz 表现出相对较弱的分子间相互作用和扭曲的分子结构，从而导致更突出的压氟变色行为。与 DPAAnTrz 相比，TPAAnTrz 表现出较弱的分子间相互作用和扭曲的分子结构，从而导致更明显的压氟变色行为。利用 TPAAnTrz 和 DPAAnTrz 作为发光体，即使在高亮度水平下，非掺杂器件的最高效率也可分别达到 13.2 和 10.1 cd/A，效率衰减几乎可以忽略不计。这显示了高性能光电器件的巨大潜力。

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.