Self-Assembly Driven Aggregation-Induced Emission of Copper Nanoclusters: A Novel Technology for Lighting
Self-Assembly Driven Aggregation-Induced Emission of Copper Nanoclusters: A Novel Technology for Lighting
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DOI：
10.1021/acsami.7b13940
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发表时间：
2018-04-18
影响因子：
9.5
通讯作者：
Zhang, Hao
中科院分区：
文献类型：
--
作者：
Liu, Yi;Yao, Dong;Zhang, Hao
金属纳米团簇（NC）具有HOMO LUMO电子跃迁、尺寸依赖性荧光发射和强烈的光吸收等特性，被认为是发光二极管（LED）中最具竞争力的颜色转换材料之一。然而，单一金属纳米粒子的发光颜色单调，发光稳定性和强度较低，严重限制了其广泛应用。受“聚集诱导发射”（AIE）概念的启发，利用高度有序的金属NC组件为解决这些问题打开了一扇大门。自组装后，金属NC组件的发射稳定性和强度得到提高。同时，金属NC组件的发射颜色变得可调。我们称这个过程为自组装驱动的AIE的金属NC。本文以铜纳米碳为例，阐述了金属纳米碳的有序排列可以有效地提高其发光稳定性、可持续性和发光强度。我们首先介绍了二维Cu NC自组装的合成及其发光。我们进一步总结了一些因素，可以影响2D铜NC自组装的排放。然后，我们讨论了利用二维铜NC自组装作为LED的颜色转换材料。最后，我们概述了当前的挑战和我们对这一领域的发展前景。
Because of the specific properties including HOMO LUMO electronic transition, size-dependent fluorescent emission, and intense light absorption, metal nanoclusters (NCs) have been considered to be one of the most competitive color conversion materials in light-emitting diodes (LEDs). However, the monotonous emission color and the low emission stability and intensity of individual metal NCs strongly limit their universal application. Inspired by the concept of "aggregation induced emission" (AIE), the utilization of highly ordered metal NC assemblies opens a door to resolve these problems. After self-assembly, the emission stability and intensity of metal NC assemblies are enhanced. At the same time, the emission color of metal NC assemblies become tunable. We termed this process as self-assembly driven AIE of metal NCs. In this review, we use Cu NCs as the example to convey the concept that the compact and ordered arrangement can efficiently improve the metal NCs' emission stability, tenability, and intensity. We first introduce the synthesis of 2D Cu NC self-assemblies and their emissions. We further summarize some of the factors that can affect the emissions of 2D Cu NC self-assemblies. We then discuss the utilization of 2D Cu NC self-assemblies as color conversion materials for LEDs. At last, we outline current challenges and our perspectives on the development of this area.