Synthesis and Luminescence Properties of Two-Electron Bimetallic Cu–Ag and Cu–Au Nanoclusters via Copper Hydride Precursors

The synthesis, structural characteristics, and photophysical properties of luminescent Cu-rich bimetallic superatomic clusters [Au@Cu12(S2CNnPr2)6(C?CPh)4]+ (1a+), [Au@Cu12{S2P(OR)2}6(C?CPh)4]+ (2+), (2a+ = iPr; 2b+ nPr), [Au@Cu12{S2P(C2H4Ph)2}6(C?CPh)4]+ (2c+), [Ag@Cu12{S2P(OnPr)2}6(C?CPh)4]+ (3+) were studied. Compositionally uniform 1+–3+ isolated from the reaction dithiolato-stabilized, polyhydrido copper with phenylacetylene in presence heterometal salts. By using X-ray diffraction, structures 1a+, 2a+, 2b+, 3+ able to be determined. ESI–mass spectrometry elemental analysis confirmed their compositions purity. characteristics these are similar respect displaying gold (or silver)-centered Cu12 cuboctahedra surrounded by six dithiocarbamate/dithiophosph(in)ate four alkynyl ligands. doping Au Ag atoms into nanoclusters significantly enhances PL quantum yields Ag@Cu12 (0.58%) Au@Cu12 (55%) at ambient temperature solution. In addition, electrochemical new alloys investigated cyclic voltammetry.