Rossini Group March 2018 (Left to Right): Yunhua Chen, Dr. Brijith Thomas, Viraj Wijesekara, Amrit Venkatesh, Prof. Aaron Rossini, Scott Carnahan, Mike Hanrahan and Dr. David Hirsh. Background: 400 MHz/263 GHz Bruker DNP Solid-State NMR Spectrometer, DOE Ames Lab.

The Rossini Group Overview

Welcome to the home page for the Rossini research group in the Department of Chemistry of Iowa State University. We are an experimental physical chemistry research group interested in the characterization of inorganic materials, catalysts and pharmaceuticals. The primary tool we use to accomplish this is solid-state nuclear magnetic resonance (NMR) spectroscopy.

For more information about our research please visit the Research and Publication pages.

To see some photos of our labs and facilities please visit the Facilities page.

If you are interested in joining our group please email Professor Rossini at arossini@iastate.edu!

News

06/2018 – Amrit’s paper Enhancing the Sensitivity of Solid-State NMR Experiments with Very Low-Gyromagnetic Ratio Nuclei with Fast MAS and Proton Detection appears in the Journal of Physical Chemistry A. Rare Earth Arylsilazido Compounds with Inequivalent Secondary Interactions appears in Chemical Communications. This paper was lead by the Sadow group at ISU and Amrit obtained some nice 89Y NMR spectra.

We welcome Rafael Blome Fernandez and Rick Dorn to the research group as summer research students.

05/2018 – Congrats to Dr. David Hirsh on his new position at Boehringer Ingelheim in Connecticut! Aaron attends the 59th ENC in Orlando and gives a talk describing fast MAS solid-state NMR methods.

02/2018 – Congrats to Amrit Venkatesh who was awarded the prestigious Brown Graduate Fellowship from Iowa State.

Two new papers are out. Li Zhao’s paper Characterization of Pharmaceutical Cocrystals and Salts by Dynamic Nuclear Polarization-Enhanced Solid-State NMR Spectroscopy appears in Crystal Growth and Design. This paper results from a collaboration with Dr. Joe Lubach and Dr. Karthik Nagapudi from Genentech, Inc.

"Modulating Reactivity and Selectivity of 2‑Pyrone-Derived Bicyclic Lactones through Choice of Catalyst and Solvent"appears in ACS Catalysis. This paper was lead by Prof. Brent Shanks group (ISU Chemical and Biological Engineering). Matt Ryan obtained some nice 1D and 2D 1H, 13C and 27Al solid-state NMR spectra for the paper. Congrats Matt!

01/2018 – We are happy to welcome Dr. David Hirsh to the group. David just completed his PhD with Rob Schurko at the University of Windsor.

12/2017 – Two new papers are out. Michael Hanrahan’s paper, Characterization of Silicon Nanocrystal Surfaces by Multidimensional Solid-State NMR Spectroscopy appears in Chemistry of Materials. Congrats Mike! This paper was the result of a collaboration with the groups of Prof. Theresa Windus (ISU) and Dr. Nathan Neale (NREL DOE Lab). A new review article written by Dr. Li Zhao, DNP-Enhanced Solid-State NMR Spectroscopy of Active Pharmaceutical Ingredients appears in Magnetic Resonance in Chemistry.

11/2017 – Anuradha Viraj Wijesekara and Yunhua Chen (co-advised with Prof. Javier Vela) join the group as graduate students.

10/2017 – Congratulations to Dr. Li Zhao on his new position at Voxalytics in Germany. We will miss Li and wish him good luck in his new career.

09/2017 – A new paper Enhancing the Resolution of 1H and 13C Solid-State NMR Spectra by Reduction of Anisotropic Bulk Magnetic Susceptibility Broadening is out in the journal Physical Chemistry Chemical Physics. This paper demonstrates that 2D HETCOR experiments can be used to directly improve the resolution of 1H and 13C solid-state NMR spectra by reducing the inhomogeneous ABMS broadening. This work was performed in collaboration with Prof. Eric Munson (University of Kentucky).

08/2017 – We are pleased to welcome Dr. Brijith Thomas to the group as a post-doctoral fellow.

07/2017 – A new paper The Solvent-Solid Interface of Acid Catalysts Studied by High Resolution MAS NMR is out in the Journal of Physical Chemistry C. This work was performed in collaboration with Dr. Robert Johnson and Prof. Brent Shanks (ISU).

06/2017 – A new paper, Argentation Gas Chromatography Revisited: Separation of Light Olefin/Paraffin Mixtures Using Silver-based Ionic Liquid Stationary Phases, is published in Journal of Chromatography A in collaboration with Professor Jared Anderson (ISU). In this paper Amrit obtained 109Ag solid-state NMR spectra of some silver ionic liquids using fast magic angle spinning and proton detection.

06/2017 – Some new articles from Aaron’s post-doc work with Lyndon Emsley are published. A paper in Journal of the American Chemical Society in collaboration with Christophe Copéret (ETH Zurich) describes the characterization of trivalent surface grafted organometallic complexes with DNP enhanced NMR. A paper in the Journal of Physical Chemistry C describes the application of DNP enhanced NMR for the characterization of calcium silicate cement materials. This paper was in collaboration with Paul Bowen (EPFL).

05/2017 – We are pleased to welcome Dr. Li Zhao to the group as a post-doctoral fellow.

04/2017 – A new paper Proton Detection of MAS Solid-State NMR Spectra of Half-Integer Quadrupolar Nuclei is available in Solid State Nuclear Magnetic Resonance. Also, congratulations to Mike and Amrit who received scholarships/awards from the Chemistry Department. Both Scott and Amrit were named as finalists for the Cotton-Uphaus Award. Congratulations to Amrit for winning the Cotton-Uphaus Award!

03/2017 – A new perspective article Lead Halide Perovskites: Challenges and Opportunities in Advanced Synthesis and Spectroscopy is available in ACS Energy Letters. This work was a collaboration with Prof. Javier Vela and Prof. Emily Smith. A video summarizing the perspective can also be viewed here.

01/2017 – A couple of new papers are out. "Indirect Detection of Infinite-Speed MAS Solid-State NMR Spectra" appears in the Journal of Magnetic Resonance and was a collaboration with Dr. Fred Perras and Dr. Marek Pruski (Ames Lab/ISU). "Transfer Hydrogenation Activity over Sodium-Modified Ceria: Enrichment of Redox Sites Active for Alcohol Dehydrogenation" appears in the Journal of Catalysis and was a collaboration with Dr. Igor Slowing’s group (Ames Lab/ISU).

01/2017 – We are pleased to welcome Matt Ryan to the group. Matt is an undergraduate student researcher who is part of the ISU University Honors program.

News Archive