Conférence du Prof. Audrey Moores 26/11/2015 – le 26 novembre à 14h, salle de l’UMR

Conférence du Prof. Audrey Moores du « Center for Green Chemistry and Catalysis » de l’Université McGill à Montreal au Canada.

Titre de la conférence : « Atom economy in Nanoscience: Solvent, Reducer and Ligand free avenues to access metal nanoparticles ».

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Bio Prof Audrey Moores 26-11-2015

Résumé Conférence Prof Audrey Moores 26-11-2015

 

Prof. Audrey Moores du « Center for Green Chemistry and Catalysis » de l’Université McGill à Montreal au Canada.

Audrey Moores completed her BSc at Ecole Polytechnique (X98) in 2001. She completed her PhD in 2005 in the same university under the supervision of Prof. Pascal Le Floch. Her research topic focused on the use of phosphorus based heterocycles in coordination chemistry and catalysis. She then became a post-doctoral fellow at Yale University in 2006, where she studied under the guidance of Prof. Robert H. Crabtree hydrogen storage molecules and amine alkylation. In 2007, she started her independent career as an assistant professor in the Department of Chemistry at McGill University. In 2012, she became a co-associate director of the Center for Green Chemistry and Catalysis, a strategic cluster funded by the Le Fonds de recherche du Québec – Nature et technologies (FRQNT). In 2014, she became an associate professor. Since 2015, she is also an associate editor for the journal RSC advances.
Her group works at the interfaces between the fields of material chemistry, coordination chemistry and organic synthesis. We conduct research in the domains of catalysis using both the heterogeneous and homogeneous approaches and more sustainable nanoparticle synthesis. We have a special interest in magnetic particles and nanocrystallites of cellulose in catalysis, novel syntheses of nanoparticles in solid phase and nanoparticles in ionic liquid media.
Her scientific work has been published in ca. 50 high profile, peer reviewed publications, such as J. Am. Chem. Soc., Green Chem., Chem. Comm., or ACS Sustainable Chem. Eng. She also authored 4 book chapters, 1 book and 3 patents. Her h-index is 20 with over 1600 citations (Google Scholar).
In 2007, she received a Canada Research Chair in Green Chemistry, which was renewed in 2012. In 2011, she was awarded a Science Communication Fellowship for Green Chemistry by Environmental Health News and Advancing Green Chemistry. In 2014, she received an Outside Quebec Exchange Professorship, 2014, awarded by FRQNT, in support for a 2 month visit at Princeton University.
Audrey H. Moores, Dr.
Department of Chemistry
McGill University

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Atom economy in Nanoscience: Solvent, Reducer and Ligand free avenues to access metal nanoparticles
Audrey Moores, Centre for Green Chemistry and Catalysis, McGill University,

Metal nanoparticles (NPs) are a class of materials intensely researched for their powerful properties applicable in the broad fields of medicine, electronics, optics and catalysis. Because metal NPs are kinetically stabilized materials, their synthesis often relies on the use of excess solvents, additives and strong reducing agents. In recent years, efforts have been made to develop more sustainable synthetic methods to access these high-value materials. [1-3] Our research group has recently explored three strategies to achieve this goal.
First we explored the chemistry of reduced Fe NPs. We showed that we could use them to perform alkene hydrogenation. [4-5] They can also be effectively applied to the generation of mixed metal nanomaterials, by using Fe NPs as seed, reducing agents, and supports. With Cu we generated iron/copper nanoparticles which were able to heterogeneously catalyze the Huisgen condensation and cyclopropanation of alkenes. [6-8]
Next, we developed a novel synthetic method for the scalable production of metal NPs under solvent-free, mechanochemical conditions.[9] The synthesis of Au NPs proceeds fast (1.5 hours) and provides access to gram amounts of monodisperse and ultra-small NPs in the size range of 1–4 nm, without external reducing agents or bulk solvents. We used as a stabilizer long chain amines and observed a dependency of the NP size on the amine carbon-chain length. Novel methods, using biomass-based reducers allow access to other metal NPs, including Ag, Pd, Ru, Re and Rh. [10]
Finally cellulose nanocrystals are used as a non-innocent support to generate metal/cellulose nanohybrids. We showed that with Pd we could afford active and enantioselective hydrogenation catalysts, [11-12] while with Ru, extremely active and recyclable catalysts were accessed for the difficult reduction of arenes under mild conditions. [13] These nanocrystals in suspension could allow the direct synthesis of silver nanoparticles without the use of any oxidizing or reducing chemical.

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