Related Experiment Video
Updated: Jun 25, 2025

Triplet Fusion Upconversion Nanocapsule Synthesis
Published on: September 7, 2022
Au36(SR)22 Nanocluster and a Periodic Pattern from Six to Fourteen Free Electrons in Core Size Evolution
Yitong Wang1, Christopher G Gianopoulos2, Zhongyu Liu1
1Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.
Abstract:
An Au36(S-tBu)22 nanocluster (NC) is synthesized using the bulky tert-butyl thiol as the ligand. Single-crystal X-ray crystallography reveals that it has an Au25 core which evolves from the Au22 core in the previously reported Au30(S-tBu)18, and the Au25 core is protected by longer staple-like surface motifs. The new Au36 NC extends the members of the face-centered cubic structural evolution by adding an Au3 triangle and an Au4 tetrahedron unit. Additionally, it is found that Au36 emits near-infrared photoluminescence at 863 nm with a quantum yield (QY) of 4.3%, which is five times larger than that of Au30(S-tBu)18-the closest neighbor in the structural evolution pattern. The higher QY of Au36 is attributed to a larger radiative relaxation (kr), resulting from the structural effect. Finally, we find that the longer staple motifs lead to enhanced stability of Au36(S-tBu)22 relative to Au30(S-tBu)18.
Related Concept Videos
Electron Configuration of Multielectron Atoms
Atomic Orbitals
Electron Configurations
The relative energies of the subshells determine the order in which atomic orbitals are filled (1s, 2s, 2p, 3s, 3p,...
Atomic Radii and Effective Nuclear Charge
Trends in Lattice Energy: Ion Size and Charge
Atomic Nuclei: Nuclear Spin State Population Distribution

