Professor Cathleen Crudden
N-Heterocyclic Carbenes as Novel Ligands for Nanoparticles and Nanoclusters. Applications in Catalysis, Sensing and Molecular Medicine
NHCs have been documented as strong ligands for single metal atoms in molecular catalysts and as alternative to thiolates on planar metal surfaces. In this final talk, their use as ligands to stabilize atomically precise metal nanoclusters will be described. The structure of the cluster is shown to be strongly influenced by the nature of the NHC. By tuning the NHC structure (backbone and wingtip groups) a variety of new nanoclusters can be prepared. We will present the use of NHC-based nanoclusters with Au10, Au11, Au13, Au24 and Au25 cores, along with recent results on bimetallic cores. The unique properties of these NHC-stabilized clusters, including chirality, photophysical properties, stability and catalytic activity will be addressed.
Dr. Cathleen Crudden is the A.V. Douglas Distinguished Professor of Chemistry and Canada Research Chair (Tier 1) in metal organic chemistry at Queen’s University in Kingston, Ontario. She holds a Research Professorship at the Institute of Transformative Bio-Molecules (ITbM) in Nagoya, Japan, where she runs a satellite laboratory. She is a Fellow of the Royal Society of Canada, the Chemical Institute of Canada, the Royal Society of Chemistry (UK) and an elected member of the American Association for the Advancement of Science.
Dr. Crudden has made significant impact on diverse areas of science. She described one of the first cross-coupling reactions with chiral, enantiopure molecules that has made considerable impact on the preparation of pharmaceutical compounds. More recently, she has demonstrated the strength and versatility of N-heterocyclic carbene ligands in materials science, showing these ligands to be viable and versatile alternatives to thiolates as ligands for planar metal surfaces, nanoparticles and nanoclusters. This work has been called “game changing,” “elegant,” and “the new gold standard” by experts in the field.
Crudden has served as President of the Canadian Society for Chemistry and Chair of the Chemical Institute of Canada.She is Scientific Director of the Carbon to Metals Coatings Institute (C2MCI) at Queen’s University. She is currently Editor-in-Chief for ACS Catalysis. She has won numerous awards including the 2023 John Polanyi Award, a 2019 Cope Scholar award of the American Chemical Society, the Montreal Medal (2019), and the 2018 Carol Taylor award from the International Precious Metals Institute.
Hosted by Professor Gwen Bailey