Details

Autor(en) / Beteiligte

• Zhang, Miao-Miao
• Dong, Xi-Yan
• Wang, Zhao-Yang
• Luo, Xi-Ming
• Huang, Jia-Hong
• Zang, Shuang-Quan
• Mak, Thomas C. W

Titel

Alkynyl-Stabilized Superatomic Silver Clusters Showing Circularly Polarized Luminescence

Ist Teil von

• Journal of the American Chemical Society, 2021-04, Vol.143 (16), p.6048-6053

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We report a new enantiomeric pair of superatomic silver clusters, R/S-Ag 17 , prepared from chiral alkynyl ligands. R-Ag 17 and S-Ag 17 possess C 3 symmetry and emit near-infrared (NIR) light with a quantum yield (QY) of 8.0% under ambient condition as well as NIR circularly polarized luminescence (CPL) as a result of the chirality of the excited states. Both experiments and theoretical calculations indicate for the first time that the CPL originates from transitions between superatomic 1P z (along the C 3 axis) and 1S orbitals. This work opens a new avenue for CPL-active metal nanoclusters by utilizing chiral alkynyl ligands and enlightens the chirality transfer from chiral protecting ligands to superatomic states in metal clusters.