Events Calendar

Visiting Speaker in Chemistry ~ Professor Aaron Rossini

Date:
Monday, December 11, 2017
Time:
2:30 pm - 3:30 pm
Location:
Chemistry Building (CHB)
Room: 115
Cost:
Free

Professor Aaron Rossini
Department of Chemistry
Iowa State University

will present a talk entitled:

“Sensitizing Solid-State NMR Spectroscopy for the Atomic Level Characterization of Surfaces, Materials and Pharmaceuticals”

ABSTRACT:

The atomic level characterization of complex materials remains an unanswered scientific challenge. Solid-state nuclear magnetic resonance (NMR) spectroscopy could be an ideal probe of atomic level structure since it can be applied to both ordered and disordered materials and complex mixtures. Solid-state NMR spectroscopy also offers unparalleled selectivity, for instance, it is possible to selectively characterize surfaces and interfaces, or perform spectral editing on the basis of spin couplings. However, NMR spectroscopy suffers from intrinsically poor sensitivity that limits or prevents its application, as is the case when the species of interest are very dilute, the NMR active nuclei under study are unreceptive, or other mechanisms reduce sensitivity. In this talk I will describe how the state of the art NMR technologies of fast magic angle spinning (MAS) and dynamic nuclear polarization (DNP) can be used to enhance the sensitivity of solid-state NMR experiments by orders of magnitude. I will give examples of how these techniques can be applied for the detailed atomic level characterization of materials surfaces, nanomaterials and formulated pharmaceuticals.

Host:
Department of Chemistry
Contact:
Yining Huang - Professor
yhuang@uwo.ca
X83122
Event Type:


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