Two distinct fluorescent quantum clusters of gold starting from metallic nanoparticles by pH-dependent ligand etching

By M. A. Habeeb Muhammed, S. Ramesh, S. S. Sinha, Samir Kumar Pal, T. Pradeep. 2008

151 citations recorded by the source corpus.

Two fluorescent quantum clusters of gold, namely Au25 and Au8, have been synthesized from mercaptosuccinic acid-protected gold nanoparticles of 4–5 nm core diameter by etching with excess glutathione. While etching at pH ∼3 yielded Au25, that at pH 7–8 yielded Au8. This is the first report of the synthesis of two quantum clusters starting from a single precursor. This simple method makes it possible to synthesize well-defined clusters in gram quantities. Since these clusters are highly fluorescent and are highly biocompatible due to their low metallic content, they can be used for diagnostic applications.

Subfields: Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/d6672bc0064d1a4accaf30c03f9e69f7ded00881

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

1. Nicole Daum
2. Christian Spies

Citations in the corpus

• Highly fluorescent silver nanoclusters stabilized by glutathione: a promising fluorescent label for bioimaging (2012, methodology): “AgGSH B and AgGSH Y showed very high values, being 60% and 67% which is higher than that of the homologuous Au nanoclusters [25].”