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Updated: Apr 8, 2026
Synthesis of Near-Infrared Emitting Gold Nanoclusters for Biological Applications
Published on: March 22, 2020
A Near-Infrared-Emissive Alkynyl-Protected Au24 Nanocluster
Xian-Kai Wan1, Wen Wu Xu2, Shang-Fu Yuan1
1State Key Lab of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 (P.R. China).
Abstract:
An alkynyl-protected gold nanocluster [Au24(C≡CPh)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 Au22 core that is made of two Au13-centered cuboctahedra that share a square face. Two staple-like PhC≡C-Au-C≡CPh motifs are located around the center of the rod-like Au22 core. This Au24 nanocluster is highly emissive in the near-infrared region with λ(max)=925 nm and the nature of the HOMO-LUMO transition is investigated by time-dependent DFT calculations.
