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Research Article

One-step rapid synthesis, crystal structure and 3.3 microseconds long excited-state lifetime of Pd1Ag28 nanocluster

Xinzhang Lin1,4, Hengjiang Cong2, Keju Sun3, Xuemei Fu1,4, Wanchao Kang5, Xiuli Wang5, Shengye Jin6, Ren’an Wu7, Chao Liu1( ), Jiahui Huang1( )
Gold Catalysis Research Centre, State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
College of Chemistry and Molecular Sciences, Engineering Research Centre of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, Wuhan 430072, China
College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
University of Chinese Academy of Sciences, Beijing 100049, China
State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
Laboratory of High-Resolution Mass Spectrometry Technologies, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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Graphical Abstract

Abstract

Doping foreign atom(s) in metal nanoclusters is an effective strategy to engineer the properties and functionalities of metal nanoclusters. However, until now, to dope Pd atom into Ag nanoclusters remains a huge challenge. Here we develop a one-step rapid method to synthesize the Pd-doped Ag nanocluster with high yield. The prepared Pd1Ag28 nanocluster was characterized by mass spectroscopy, X-ray photoelectron spectroscopy, X-ray crystallography, fluorescence spectroscopy, ultraviolet-visible absorption spectroscopy and transient absorption spectroscopy. The nanocluster exhibits a perfect face-centered cubic (FCC) kernel structure with a tetrahedron-like shell. Of note, Pd1Ag28 nanocluster had an unexpectedly long excited-state lifetime of 3.3 microseconds, which is the longest excited-state lifetime for Ag-based nanoclusters so far. Meanwhile, the excellent near-infrared luminescence indicated the nanocluster has the potential in fluorescent bio-imaging. Besides, it was revealed that Pd1Ag28 nanocluster could be transformed into Au1Ag28 nanocluster via ion exchange reaction of AuPPh3Cl with Pd1Ag28 nanocluster. This work provides an efficient synthetic protocol of alloy nanoclusters and will contribute to study the effect of foreign atom on the properties of metal nanoclusters.

Keywords

Pd1Ag28 alloy nanoclusterone-step rapid synthesiscrystal structurenear-infrared luminescencelong excited-state lifetime

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Nano Research
Volume 13 Issue 2,
February 2020
Pages 366-372
DOI: 10.1007/s12274-020-2615-1
Cite this article:
Lin X, Cong H, Sun K, et al. One-step rapid synthesis, crystal structure and 3.3 microseconds long excited-state lifetime of Pd1Ag28 nanocluster. Nano Research, 2020, 13(2): 366-372. https://doi.org/10.1007/s12274-020-2615-1
Topics:
Absorption spectroscopyBinary alloysCrystal structureFluorescence imagingFluorescence spectroscopyGold alloysInfrared devices Ion exchangeMass spectrometryNanoclustersPalladium alloysSilverX-ray crystallographyX-ray photoelectron spectroscopy

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Received: 21 October 2019
Revised: 17 December 2019
Accepted: 18 December 2019
Published: 02 January 2020
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020
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