Doping of thiolate protected gold clusters through reaction with metal surfaces

Abstract

New method to dope gold nanoclusters by using metal surfaces of silver, copper and cadmium as sources of heteroatoms.

Amplified vibrational circular dichroism as a manifestation of the interaction between a water soluble gold nanocluster and cobalt salt

“…Possibly the slow kinetics is associated with another process, like the formation of an Au 25 (Capt) 18 -Co 2+ adduct, similar to that detected for Cu. 43 Finally, it is worth mentioning that the enhancement of VCD signals due to interaction with paramagnetic metal ions like Co 2+ has been shown to be a local effect. 24 Only the functional groups in close proximity to the metal ion give rise to enhanced signals.…”

Dynamics of Pd Dopant Atoms inside Au Nanoclusters during Catalytic CO Oxidation

“… 13 − 23 Recently, Bürgi and co-workers reported that metal exchange reactions could also be observed between Au nanoclusters and metal foils (Ag, Cd, Cu), leading to bimetallic nanoclusters. 24 Metal migration in Ag 2 Au 25 clusters was found to occur also intramolecularly when exposed to a thiol solution. 25 Altogether, this demonstrated that in solution, the structure of doped nanoclusters is not static but evolves under different conditions.…”

The mechanism of metal exchange in non-metallic nanoclusters

“…We substituted gold atoms in fcc structured Au 28 and Au 36 Doped nanoclusters provide an ideal model for understanding the metal synergy effect at the atomic level. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] However, doping a specic number of hetero-metal atoms at specic positions is a great challenge in the synthesis of doped metal nanoclusters with maintained structure. [15][16][17][18][19] Metal displacement reactions based on standard electrode potentials are widely used in metal extraction and alloying.…”