Abstract Gold and silver nanoclusters aggregates have gained significant attention as their optical properties and chemical stability surpasses those of individual nanoclusters. Here, we present a systematic investigation of aggregation-induced changes of morphology and optical properties of glutathione-stabilized silver-doped gold nanoclusters (AuAg NCs). We show that the silver-doped clusters have the ability to spontaneously aggregate in solution, but in order to stabilize their structure and enhance the one-photon (1 P) and two-photon (2 P) properties we used poly(allylamine hydrochloride) (PAH) matrix. This resulted in obtaining NCs superstructures having narrow size distribution and efficient 1 P and 2 P excited photoluminescence.

中文翻译：

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聚合物稳定的 AuAg 纳米团簇聚集体的增强单光子和双光子激发发光

摘要 金银纳米团簇由于其光学性质和化学稳定性优于单个纳米团簇而受到广泛关注。在这里，我们对聚集引起的谷胱甘肽稳定的掺银金纳米团簇（AuAg NCs）的形态和光学性质的变化进行了系统的研究。我们表明，银掺杂簇具有在溶液中自发聚集的能力，但为了稳定它们的结构并增强单光子 (1 P) 和双光子 (2 P) 特性，我们使用了聚（烯丙胺盐酸盐） (PAH) 矩阵。这导致获得具有窄尺寸分布和高效 1 P 和 2 P 激发光致发光的 NCs 超结构。