Fabrication of Color-Tunable Gold Nanoclusters and Their Application for Information Encryption

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY ACS Applied Nano Materials Pub Date : 2024-09-30 DOI:10.1021/acsanm.4c0503410.1021/acsanm.4c05034

Fengjie Zhou, Jing Fu, Mengqi Yang, Jinglin Shen* and Wei Qi*,

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Abstract

The unique luminescence properties of gold nanoclusters (AuNCs) have attracted intense research interest in multiple areas. However, most AuNCs exhibit only a single-color emission. Achieving color-tunable emission through single AuNCs is attractive but still challenging. Herein, a switchable fluorescence strategy was introduced by integrating an aggregation-caused quenching (ACQ)-type ligand into an aggregation-induced emission (AIE)-type nanocluster system. In the AIE/ACQ strategy, 4,6-diamino-2-pyrimidinethiol (DPT)-AuNCs with color-tunable emission were developed: in the dimethylformamide (DMF)/water system, the DPT-AuNCs were dissociated and blue fluorescence was obtained, whereas in the MeOH/water system, DPT-AuNCs aggregated and strong orange phosphorescence was obtained. The emission color from orange to blue could also be switched by adjusting the solvent composition. Based on this strategy, the color-tunable AuNCs system was further employed for dynamic information encryption.

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可调色金纳米团簇的制备及其在信息加密中的应用

金纳米团簇（AuNCs）的独特发光特性引起了多个领域的浓厚研究兴趣。然而，大多数 AuNCs 只表现出单色发射。通过单个 AuNCs 实现颜色可调的发射很有吸引力，但仍具有挑战性。本文通过将聚集诱导淬灭（ACQ）型配体整合到聚集诱导发射（AIE）型纳米簇系统中，引入了一种可切换荧光策略。在 AIE/ACQ 策略中，开发出了发射颜色可调的 4,6-二氨基-2-嘧啶硫醇（DPT）-AuNCs：在二甲基甲酰胺（DMF）/水体系中，DPT-AuNCs 解离并获得蓝色荧光；而在 MeOH/ 水体系中，DPT-AuNCs 聚集并获得强烈的橙色磷光。通过调整溶剂成分，还可以将发射颜色从橙色切换到蓝色。基于这一策略，颜色可调的 AuNCs 系统被进一步用于动态信息加密。

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来源期刊

ACS Applied Nano Materials Multiple-

CiteScore

8.30

自引率

3.40%

发文量

1601

期刊介绍： ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.