A Near-Infrared-Emissive Alkynyl-Protected Au24 Nanocluster

Xian Kai Wan, Wen Wu Xu, Shang Fu Yuan, Yi Gao, Xiao Cheng Zeng, Quan Ming Wang

Research output: Contribution to journalArticle

79 Scopus citations

Abstract

An alkynyl-protected gold nanocluster [Au24(CΞCPh)14(PPh3)4](SbF6)2 has been prepared by a direct reduction method. Single-crystal X-ray diffraction reveals that the molecular structure contains a Au22core that is made of two Au13-centered cuboctahedra that share a square face. Two staple-like PhCΞCAuCΞCPh motifs are located around the center of the rod-like Au22core. This Au24 nanocluster is highly emissive in the near-infrared region with λmax=925nm and the nature of the HOMO-LUMO transition is investigated by time-dependent DFT calculations. Good as gold: An alkynyl-protected gold nanocluster [Au24(CΞCPh)14(PPh3)4](SbF6)2 is reported which contains a Au22core composed of two Au13 centered cuboctahedra that share a square face. Two staple-like PhCCAuCCPh motifs are located around the center of the rod-like Au22core. The Au24 nanocluster is highly emissive in the near-infrared region (λmax=925nm). Atom colors: Au=orange; C=gray.

Original languageEnglish (US)
Pages (from-to)9683-9686
Number of pages4
JournalAngewandte Chemie - International Edition
Volume54
Issue number33
DOIs
StatePublished - Aug 1 2015

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Keywords

  • DFT calculations
  • alkyne ligands
  • cluster compounds
  • gold
  • photophysics

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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