January 2, 2018
The paper, “Crystal Structure of Faradaurate-279: Au279(SPh-tBu)84 Plasmonic Nanocrystal Molecules,” is in the November 1, 2017 issue.
This unprecedentedly large, 2.2 nm diameter, thiolate protected gold nanocrystal is named Faradaurate-279 (F-279) in honor of Michael Faraday’s (1857) pioneering work on nanoparticles. It is the smallest gold nanocrystal to exhibit metallic behavior, with a surface plasmon resonance band around 510 nm.
According to Dr. Dass’ faculty webpage: “Nanoscience is a new area of science that has generated excitement worldwide. Nanomaterials are being developed to address some of the world’s biggest challenges, including: clean, affordable energy; stronger, lighter, more durable materials; medical devices and drugs to detect and treat diseases; sensors to detect harmful chemical or biological agents; lighting that uses a fraction of the energy; low-cost filters to provide clean drinking water. We work on molecular gold nanoparticles (<2nm) that have precise number of gold atoms and ligands. Commercialization of nanomaterials and design of nanoengineered products will require: understanding of the fundamental properties; controlled synthetic and processing conditions. In my research group, we work on synthesis and characterization (mass spectrometry, NMR, optical spectroscopy) of these molecular gold nanoparticles.”