Recent developments in pulse sequences and NMR hardware have opened up many "exotic" nuclides in the periodic table to experimentation by solid-state NMR. Many of these nuclides are classified as unreceptive, and have been avoided by NMR spectroscopists and chemists in general, due to factors such as low Larmor frequencies, low natural abundances, inconveniently short or long relaxation times, etc. In addition, there are numerous systems in which these nuclides have extremely broad NMR patterns resulting from large anisotropic chemical shielding or quadrupolar interactions. Such nuclei have long been classified as "invisible", since their NMR spectra cannot be observed using standard NMR pulse sequences. In this lecture, I will show that there are several robust strategies one can apply to acquire high quality solid-state NMR spectra of a variety of nuclei, including 10B, 14N, 27Al, 35/37Cl, 47/49Ti, 59Co, 63/65Cu, 69/71Ga, 91Zr, 93Nb, 139La, 195Pt, and 209Bi. Ultra-wideline NMR spectra, when coupled with X-ray crystallography and ab initio methods, provide powerful probes of molecular structure in inorganic, organic, biological, and organometallic materials. Some applications to pharmaceuticals, catalysts, metal-organic frameworks, and other materials will also be presented.
Dr. Schurko was born in Canada. He received his BS and MS from the University of Manitoba in ’92 and ’94 respectively. He was a Killam Fellow, 1996-1998, at the Dalhousie University where he also received his Ph.D. in Chemistry in 1998. He was a Postdoctoral Fellow, 1998-1999, at State University of New York at Stony Brook. He went on to the University of Illinois at Chicago as a Postdoctoral Fellow, 1999-2000. It was in 2000 that he became an assistant professor at the University of Windsor, Dept. of Chemistry and Biochemistry where he currently is a Professor. During his ascension from Associate Professor to Professor and after he was a visiting scientist at Ecole normale superieure de Lyon, France, University of Warwick, U.K., Weizmann Institute, Israel and Deakin University, Geelong, Australia. He was the 50th Anniversary Jubilee Chair-University of Windsor- Outstanding Research Award, 2014-2016.
Friday, December 7, 2018
Refreshments will be served at 1:45 p.m.
Robert Schurko, Ph.D.
Professor of Chemistry and Biochemistry
University of Windsor, Ontario, Canada