Highly Efficient Synthesis of Au₁₃₀(SPh-Br)₅₀ Nanocluster

Abstract

We reported the synthesis of Au₁₃₀(SPh-Br)₅₀(Br-Ph-SH=4-bromothiophenol) nanocluster with high purity and high yield via “size focusing” and “ligand exchange” processes. The time of synthetic process was significantly reduced compared with previous synthetic routine. Au₁₃₀(SPh-Br)₅₀ was determined by UV-Vis absorption spectros-copy and matrix-assisted laser desorption ionization(MALDI) mass spectroscopy. Thermo-gravimetric analysis (TGA) and size-exclusion chromatogram(SEC) analyses confirmed the purity of Au₁₃₀(SPh-Br)₅₀. The yield of gold nanoc-lusters was 20%(based on HAuCl₄).

Keywords

Au₁₃₀ / Gold nanocluster / Thiolate ligand

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