Research

 

The discovery and development of new materials is essential to the advancement of technology. This link between materials and technology is so important that we use materials-related terms to organize human history (e.g., the Bronze Age, the Iron Age and the Information Age, which should arguably be called the Silicon Age).

Spintronic Age

Predicting the next Age is difficult, but possibilities include the “Spintronic Age”, harnessing the quantum spin of conducting electrons, or the “Quantum Computing Age”, using quantum logic functions to revolutionize our computational landscape. The next transformative technology will involve

 

(1) miniaturization to the molecular level, and

(2) new materials with unprecedented magnetic, conductive and optical properties.

 

We are pushing the envelope of materials design in these areas with a unique approach that employs thiazyl radicals as paramagnetic ligands. The resulting metal coordination complexes promise molecular and supramolecular architectures with an exciting range of enhanced and unusual materials properties.

 

Keywords

Synthesis, Inorganic Chemistry, Molecular Materials, Magnetism, Conductivity, Thiazyls, Radical Ligands, Lanthanides, Coordination Chemistry, Supramolecular Chemistry, EPR Spectroscopy, Mechano-chemistry

 

Select Publications

Mayo, R. A.; Sullivan, D. J.; Fillion, T. A.; Kycia, S. W.; Soldatov, D. V.; Preuss, K. E. "Reversible crystal-to-crystal chiral resolution: making/breaking non-bonding S...O interactions" Chem. Commun. 2017, 53, 3964.

Maahs, A. C.; Ignacio, M. G.; Ghazzali M.; Soldatov, D. V.; Preuss, K. E. "Chiral Crystals of an Achiral Molecule Exhibit Plastic Bending and a Crystal-to-Crystal Phase Transition" Cryst. Growth Des. 2017, 17, 1390.

Fatila, E. M.; Maahs, A. C.; Mills, M. B.; Rouzières, M.; Soldatov, D. V.; Clérac, R.; Preuss, K. E. "Ferromagnetic ordering of -[Sm(III)-radical]n- coordination polymers" Chem. Commun. 2016, 52, 5414.

Smiths, C. S.; MacDonald, D. J.; Letvenuk, T. M.; Carello, C. E.; Jennings, M.; Lough, A. J.; Decken, A.; Preuss, K. E. "A 1,2,3-dithiazolyl-o-naphthoquinone: a neutral radical with isolable cation and anion oxidation states" Dalton Trans.. 2016, 45, 9608.

Mills, M. B.; Hollingshead, A. G.; Maahs, A. C.; Soldatov, D. V.; Preuss, K. E. "Isomerization of a lanthanide complex using a humming top guest template: a solid-to-solid reaction" CrystEngComm 2015, 17, 7816.

Fatila, E. M.; Mayo, R. A.; Rouzières, M.; Jennings, M. C.; Dechambenoit, P.; Soldatov, D. V.; Mathonière, C.; Clérac, R.; Coulon, C.; Preuss, K. E. "Radical-Radical Recognition: Switchable Magnetic Properties and Re-entrant Behavior" Chem. Mater. 2015, 27, 4023-4032.

Preuss, K. E. "Metal-radical coordination complexes of thiazyl and selenazyl ligands" Coord. Chem. Rev. 2015, 289-290, 49-61.

Preuss, K. E. "Pancake bonds: pi-Stacked dimers of organic and light-atom radicals" Polyhedron 2014, 79, 1-15.

Fatila, E. M., Clérac, R.; Jennings, M.; Preuss, K. E. “McConnell I mechanism promotes ferromagnetic interactions between pi-stacked Ni(II)-thiazyl complexes” Chem. Commun. 2013, 49, 9431-9433.

Fatila, E. M.; Clérac, R.; Rouzières, M.; Soldatov, D.; Jennings, M.; Preuss, K. E. “High-Spin Ribbons and Antiferromagnetic Ordering of a MnII-Biradical-MnII Complex” J. Am. Chem. Soc. 2013, 135, 13298-13301.

Fatila, E. M.; Rouzières, M.; Jennings, M. C.; Lough, A. J.; Clérac, R.; Preuss, K. E. “Fine-Tuning the Single-Molecule Magnet Properties of a [Dy(III)-Radical]2 Pair” J. Am. Chem. Soc. 2013, 135, 9596-9599.

Fatila, E. M.; Clérac, R.; Rouzières, M.; Soldatov, D. V.; Jennings, M.; Preuss, K. E. “Ferromagnetic superexchange in a 1D -[LaIII-radical]- coordination polymer” Chem. Commun. 2013, 49, 6271-6273.

Wu, J.; MacDonald, D. J.; Clérac, R.; Jeon, I.-R.; Jennings, M.; Lough, A. J.; Britten, J.; Robertson, C.; Dube, P. A.; Preuss, K. E. “Metal Complexes of Bridging Neutral Radical Ligands: pymDTDA and pymDSDA” Inorg. Chem. 2012, 51, 3827-3839.

Sullivan, D. J.; Clérac, R.; Jennings, M.; Lough, A. J.; Preuss, K. E. “Trinuclear Mn(II) complex with paramagnetic bridging 1,2,3-dithiazolyl ligands” Chem. Commun. 2012, 48, 10963-10965.

Fatila, E. M.; Hetherington, E. E.; Jennings, M.; Lough, A. J.; Preuss, K. E. “Synthesis and crystal structures of anhydrous Ln(hfac)3(monoglyme). Ln = La, Ce, Pr, Sm, Eu, Gd, Tb, Dy, Er, Tm” Dalton Trans. 2012, 41, 1352.

University of Guelph
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Canada
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