Basu Srestha, Fakhouri Hussein, Moulin Christophe, Dolai Santanu, Russier-Antoine Isabelle, Brevet Pierre-François, Antoine Rodolphe, Paul Anumita
Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Lyon, France.
Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India.
Nanoscale. 2021 Mar 4;13(8):4439-4443. doi: 10.1039/d0nr08764e.
Herein we report unprecedented determination of the molar mass of zinc mediated assemblies of homoleptic gold nanoclusters, based on charge detection mass spectrometry measurements. The accurate determination of the molar mass of zinc coordinated assemblies of gold clusters has further allowed unambiguous determination of the two-photon excited photoluminescence cross section of the same. Furthermore, in line with one-photon excited photoluminescence measurements, four orders-of-magnitude enhancement in two-photon excited photoluminescence of gold nanoclusters has been observed following complexation with zinc ions. The study reported herein is envisioned to not only deepen the fundamental understanding of the multiphoton excitation properties of atomic clusters but also widen their application potential as luminescence markers.
在此，我们报告了基于电荷检测质谱测量对同配体金纳米团簇的锌介导组装体摩尔质量的前所未有的测定。金团簇锌配位组装体摩尔质量的准确测定进一步使得能够明确测定其双光子激发光致发光截面。此外，与单光子激发光致发光测量结果一致，在与锌离子络合后，观察到金纳米团簇的双光子激发光致发光增强了四个数量级。本文报道的这项研究不仅有望加深对原子团簇多光子激发特性的基本理解，还能拓宽其作为发光标记物的应用潜力。
