0000000001320670
AUTHOR
Larry A. Calhoun
Robust, Highly Luminescent Au13 Superatoms Protected by N-Heterocyclic Carbenes
Gold superatom nanoclusters stabilized entirely by N-heterocyclic carbenes (NHCs) and halides are reported. The reduction of well-defined NHC–Au–Cl complexes produces clusters comprised of an icosahedral Au13 core surrounded by a symmetrical arrangement of nine NHCs and three chlorides. X-ray crystallography shows that the clusters are characterized by multiple CH−π and π–π interactions, which rigidify the ligand and likely contribute to the exceptionally high photoluminescent quantum yields observed, up to 16.0%, which is significantly greater than that of the most luminescent ligand-protected Au13 superatom cluster. Density functional theory analysis suggests that clusters are 8-electron …
Robust, Highly Luminescent Au13 Superatoms Protected by N-Heterocyclic Carbenes
Gold superatom nanoclusters stabilized entirely by N-heterocyclic carbenes (NHCs) are reported. The reduction of well-defined NHC–Au–Cl complexes produces clusters com-prised of an icosahedral Au13 core surrounded by a symmetrical arrangement of 9 NHCs and 3 chlorides. X-ray crystallography shows that the clusters are characterized by multiple CH–π and π–π interactions, which rigidify the ligand and likely con-tribute to the exceptionally high photoluminescent quantum yields observed, up to 16.0 %, which is significantly greater than the most luminescent ligand-protected Au13 superatom cluster. Density functional theory analysis suggests that clus-ters are 8-electron superatoms with a wide …
CCDC 1886732: Experimental Crystal Structure Determination
Related Article: Mina R. Narouz, Shinjiro Takano, Paul A. Lummis, Tetyana I. Levchenko, Ali Nazemi, Sami Kaappa, Sami Malola, Goonay Yousefalizadeh, Larry A. Calhoun, Kevin G. Stamplecoskie, Hannu H��kkinen, Tatsuya Tsukuda, Cathleen M. Crudden|2019|J.Am.Chem.Soc.|141|14997|doi:10.1021/jacs.9b07854