Magic gold nanoclusters (Au25, Au38, Au67, Au102, Au144 ) are conventionally synthesized using neutral or anionic terminated thiols such as alkanethiols, 2-phenylethanethiol, glutathione, or mercaptocarboxylic acids. However, fully cationic nanoclusters have been less explored due to the difficulty of synthesis and ligand exchange. Amino-terminated gold nanoclusters have long been applied in biomedical research, but these were based on the old gold-phosphine class. Herein, we report for the very first-time one step synthesis and direct infusion positive mode ESI-MS and UV-Vis characterization of high yield and highly stable tertiary amine (2-Dimethylaminoethanethiol) protected magic gold nanoclusters, [Au25(DMAET)18]+ and thermodynamically controlled synthesis of [(Au144(DMAET)60]+.

Base side of noble-metal clusters: An efficient route to exceptional captamine-protected gold, Aun(DMAET)p, n = 25 - 144

2019 Spring National Meeting

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.