Near-infrared luminescence AgPd alloy superatomic clusters†

IF 6.1 1区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Inorganic Chemistry Frontiers Pub Date : 2024-12-24 DOI:10.1039/D4QI02655A
Xiao-Hong Ma, Jian-Hua Qin, Fei-Fan Wang, Peng Luo and Xi-Yan Dong
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Abstract

Atomically precise superatomic nanoclusters have attracted considerable interest due to their remarkable structures and intriguing photoluminescence properties. Nevertheless, achieving a high photoluminescence quantum yield (PLQY) in the near-infrared (NIR) region of superatomic nanoclusters continues to pose a considerable challenge. Here, we report a novel bimetallic nanocluster prepared utilizing an alloying strategy, formulated as [Ag14Pd(PFBT)6(TPP)8](TPP) (abbreviated as Ag14Pd). Notably, this cluster demonstrates a remarkable NIR emission, achieving a PLQY of 15% in the solid state, which is rare for metal nanoclusters. Both experimental and theoretical analyses indicate that Ag14Pd exhibits a characteristic 8-electron superatomic structure with a 1S21P6 electronic shell closure. Furthermore, due to their bright luminescence and exceptional photostability, Ag14Pd clusters hold promising potential for applications as NIR inks for three-dimensional (3D) printing of various objects and models.

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近红外发光AgPd合金超原子团簇
原子精确的超原子纳米团簇由于其非凡的结构和有趣的光致发光特性而引起了人们的极大兴趣。然而,在超原子纳米团簇的近红外(NIR)区域实现高光致发光量子产率(PLQY)仍然是一个相当大的挑战。在这里,我们报道了一种利用合金化策略制备的新型双金属纳米团簇,称为[Ag14Pd(PFBT)6(TPP)8](TPP)(缩写为Ag14Pd)。值得注意的是,该团簇表现出显著的近红外发射,在固态下实现了15%的PLQY,这在金属纳米团簇中是罕见的。实验和理论分析表明,Ag14Pd具有典型的8电子超原子结构,电子壳层闭合为1S21P6。此外,由于其明亮的发光和卓越的光稳定性,Ag14Pd团簇在用于各种物体和模型的三维(3D)打印的近红外油墨中具有很大的应用潜力。
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来源期刊
Inorganic Chemistry Frontiers
Inorganic Chemistry Frontiers CHEMISTRY, INORGANIC & NUCLEAR-
CiteScore
10.40
自引率
7.10%
发文量
587
审稿时长
1.2 months
期刊介绍: The international, high quality journal for interdisciplinary research between inorganic chemistry and related subjects
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