Aaron James Rossini

Cette personne n’est plus à l’EPFL

Publications associées (17)

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Transportable hyperpolarized metabolites

David Lyndon Emsley, Geoffrey Bodenhausen, Aurélien Bornet, Sami Jannin, Aaron James Rossini, Jonas Milani, Basile Vuichoud, Xiao Ji, David Benjamin Roger Antoine Gajan

Nuclear spin hyperpolarization of C-13-labelled metabolites by dissolution dynamic nuclear polarization can enhance the NMR signals of metabolites by several orders of magnitude, which has enabled in vivo metabolic imaging by MRI. However, because of the s ...

Nature Publishing Group2017

The Atomic-Level Structure of Cementitious Calcium Silicate Hydrate

David Lyndon Emsley, Karen Scrivener, Paul Bowen, Aaron James Rossini, Albert Hofstetter, Brennan James Walder, Abhishek Kumar, Aslam Kunhi Mohamed, Bhuvanesh Srinivasan

Efforts to tune the bulk physical properties of concrete are hindered by a lack of knowledge related to the atomic-level structure and growth of calcium silicate hydrate phases, which form about 50-60% by volume of cement paste. Here we describe the first ...

2017

Solvent suppression in DNP enhanced solid state NMR

David Lyndon Emsley, Aaron James Rossini, Jayasubba Reddy Yarava

We show how DNP enhanced solid-state NMR spectra can be dramatically simplified by suppression of solvent signals. This is achieved by (i) exploiting the paramagnetic relaxation enhancement of solvent signals relative to materials substrates, or (ii) by us ...

Academic Press Inc - Elsevier Science2017

Rational design of dinitroxide biradicals for efficient cross-effect dynamic nuclear polarization

David Lyndon Emsley, Aaron James Rossini, Dominik Józef Kubicki

A series of 37 dinitroxide biradicals have been prepared and their performance studied as polarizing agents in cross-effect DNP NMR experiments at 9.4 T and 100 K in 1,1,2,2-tetrachloroethane (TCE). We observe that in this regime the DNP performance is str ...

2016

Polymorphs of Theophylline Characterized by DNP Enhanced Solid-State NMR

David Lyndon Emsley, Aaron James Rossini, Arthur César Pinon, David Benjamin Roger Antoine Gajan

We show how dynamic nuclear polarization (DNP) enhanced solid-state NMR spectroscopy can be used to characterize polymorphs and solvates of organic solids. We applied DNP to three polymorphs and one hydrated form of the asthma drug molecule theophylline. F ...

American Chemical Society2015

Amplifying Dynamic Nuclear Polarization of Frozen Solutions by Incorporating Dielectric Particles

David Lyndon Emsley, Aaron James Rossini, Dominik Józef Kubicki

There is currently great interest in understanding the limits on NMR signal enhancements provided by dynamic nuclear polarization (DNP), and in particular if the theoretical maximum enhancements can be achieved. We show that over a 2-fold improvement in cr ...

American Chemical Society2014

Dynamic nuclear polarization of quadrupolar nuclei using cross polarization from protons: surface-enhanced aluminium-27 NMR

David Lyndon Emsley, Geoffrey Bodenhausen, Pascal Miéville, Aaron James Rossini, Diego Carnevale, Moreno Lelli, Marc Anthony Caporini, David Benjamin Roger Antoine Gajan

The surface of gamma-alumina nanoparticles can be characterized by dynamic nuclear polarization (DNP) surface-enhanced NMR of Al-27. DNP is combined with cross-polarization and MQ-MAS to determine local symmetries of Al-27 sites at the surface. ...

Royal Society of Chemistry2012

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