From Aggregation-Induced Emission of Au(I)–Thiolate Complexes to Ultrabright Au(0)@Au(I)–Thiolate Core–Shell Nanoclusters,Journal of the American Chemical Society

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From Aggregation-Induced Emission of Au(I)–Thiolate Complexes to Ultrabright Au(0)@Au(I)–Thiolate Core–Shell Nanoclusters
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2012-10-01 , DOI: 10.1021/ja306199p
Zhentao Luo ₁ , Xun Yuan ₁ , Yue Yu ₁ , Qingbo Zhang ₂ , David Tai Leong ₁ , Jim Yang Lee ₁ , Jianping Xie ₁

Affiliation

A fundamental understanding of the luminescence of Au-thiolate nanoclusters (NCs), such as the origin of emission and the size effect in luminescence, is pivotal to the development of efficient synthesis routes for highly luminescent Au NCs. This paper reports an interesting finding of Au(I)-thiolate complexes: strong luminescence emission by the mechanism of aggregation-induced emission (AIE). The AIE property of the complexes was then used to develop a simple one-pot synthesis of highly luminescent Au-thiolate NCs with a quantum yield of ~15%. Our key strategy was to induce the controlled aggregation of Au(I)-thiolate complexes on in situ generated Au(0) cores to form Au(0)@Au(I)-thiolate core-shell NCs where strong luminescence was generated by the AIE of Au(I)-thiolate complexes on the NC surface. We were able to extend the synthetic strategy to other thiolate ligands with added functionalities (in the form of custom-designed peptides). The discovery (e.g., identifying the source of emission and the size effect in luminescence) and the synthesis protocols in this study can contribute significantly to better understanding of these new luminescence probes and the development of new synthetic routes.

中文翻译：

从Au(I)-硫醇盐配合物的聚集诱导发射到超亮Au(0)@Au(I)-硫醇盐核-壳纳米团簇

对金硫醇纳米团簇 (NCs) 发光的基本理解，例如发光的起源和发光中的尺寸效应，对于开发高发光金纳米簇的有效合成路线至关重要。本文报告了 Au(I)-硫醇盐配合物的一个有趣发现：通过聚集诱导发射 (AIE) 机制产生强发光。然后利用配合物的 AIE 特性开发了一种简单的一锅法合成高发光金硫醇 NCs，量子产率约为 15%。我们的关键策略是在原位生成的 Au(0) 核上诱导 Au(I)-硫醇盐复合物的受控聚集，形成 Au(0)@Au(I)-硫醇盐核-壳 NC，其中由NC 表面上的 Au(I)-硫醇盐配合物的 AIE。我们能够将合成策略扩展到其他具有附加功能的硫醇盐配体（以定制设计的肽的形式）。这项研究中的发现（例如，确定发射源和发光的尺寸效应）和合成方案可以显着有助于更好地理解这些新的发光探针和新合成路线的开发。

更新日期：2012-10-01

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