Publications by Aaron James Rossini

Optically Enhanced Solid-State H-1 NMR Spectroscopy

Jean-Philippe Ansermet, Jonas Milani, Dominik Józef Kubicki, David Lyndon Emsley, Aaron James Rossini, Claudia Esther Avalos, Gabriele Stevanato, Aditya Mishra, Michael Allan Hope, Federico De Biasi, Moreno Lelli, Saumya Badoni

Low sensitivity is the primary limitation to extendingnuclearmagnetic resonance (NMR) techniques to more advanced chemical andstructural studies. Photochemically induced dynamic nuclear polarization(photo-CIDNP) is an NMR hyperpolarization technique where ...

AMER CHEMICAL SOC2023

Enhanced Intersystem Crossing and Transient Electron Spin Polarization in a Photoexcited Pentacene–Trityl Radical

Jacques-Edouard Moser, Etienne Christophe Socie, Dominik Józef Kubicki, David Lyndon Emsley, Aaron James Rossini, Claudia Esther Avalos, Gabriele Stevanato, Moreno Lelli

Identifying and characterizing systems that generate well-defined states with large electron spin polarization is of high interest for applications in molecular spintronics, high-energy physics, and magnetic resonance spectroscopy. The generation of electr ...

2020

One- and Two-Dimensional High-Resolution NMR from Flat Surfaces

David Lyndon Emsley, Aaron James Rossini, Brennan James Walder

Determining atomic-level characteristics of molecules on two-dimensional surfaces is one of the fundamental challenges in chemistry. High-resolution nuclear magnetic resonance (NMR) could deliver rich structural information, but its application to two-dime ...

AMER CHEMICAL SOC2019

Measurement of cos 2 beta in B-0 -> D((*))h(0) with D -> K-S(0)pi(+) pi(-) decays by a combined time-dependent Dalitz plot analysis of BABAR and Belle data

François Bianchi, Roberto Gargiani, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Gerhard Raven, Mingkui Wang, Marilisa Neri, Liang Sun, Chao Wang, Taoufiq Harach, Songmei Wu, Yong Chan Choi, Greig Alan Cowan, Alexandra Bondarenko, Lorenzo Vitale, Arnaud Michel Gelb, Aaron James Rossini, Amaury Robert Dame, Gaétan Charles Antoine Giriat, Jun Yong Kim, Mithilesh Nayak, Jiayun Shen, Armend Gazmeno Hati, John Wilson, Tara Nanut, Donghyun Kim, Martin Lubej, Lei Li, Ji Hyun Kim, Yiming Li

We report measurements of sin 2 beta and cos 2 beta using a time-dependent Dalitz plot analysis of B-0 -> D((*))h(0) with D -> K-S(0)pi(+)pi(-) decays, where the light unflavored and neutral hadron h(0) is a pi(0),eta, or omega meson. The analysis uses a c ...

American Physical Society2018

The Dark Energy Survey: Data Release 1

Vanda Carla Costa Grisel, Juan Andrei Villarroel Fernandez, Eduardo Sanchez, Josiane Angèle Charlotte Smith-Clerc, Craig Matthew Smith, Aaron James Rossini, Yi Zhang, Augusto Martins Lima, Jonathan Andrew Blazek, Xi Chen, Vikram Vinayak Karve, Jennifer Kaitlyn Olsen, Xin Chen

We describe the first public data release of the Dark Energy Survey, DES DR1, consisting of reduced single-epoch images, co-added images, co-added source catalogs, and associated products and services assembled over the first 3 yr of DES science operations ...

IOP PUBLISHING LTD2018

First Evidence for cos 2 beta > 0 and Resolution of the Cabibbo-Kobayashi-Maskawa Quark-Mixing Unitarity Triangle Ambiguity

François Bianchi, Roberto Gargiani, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Gerhard Raven, Mingkui Wang, Marilisa Neri, Liang Sun, Chao Wang, Taoufiq Harach, Songmei Wu, Yong Chan Choi, Greig Alan Cowan, Alexandra Bondarenko, Lorenzo Vitale, Seyed Sina Mirrazavi Salehian, Arnaud Michel Gelb, Aaron James Rossini, Amaury Robert Dame, Gaétan Charles Antoine Giriat, Jun Yong Kim, Mithilesh Nayak, Jiayun Shen, Armend Gazmeno Hati, John Wilson, Tara Nanut, Donghyun Kim, Martin Lubej, Lei Li, Ji Hyun Kim, Yiming Li

We present first evidence that the cosine of the CP-violating weak phase 2 beta is positive, and hence exclude trigonometric multifold solutions of the Cabibbo-Kobayashi-Maskawa (CKM) Unitarity Triangle using a time-dependent Dalitz plot analysis of B-0 -> ...

2018

DNP-enhanced solid-state NMR spectroscopy of active pharmaceutical ingredients

Arthur César Pinon, David Lyndon Emsley, Aaron James Rossini

2018

Structure of Lipid Nanoparticles Containing siRNA or mRNA by Dynamic Nuclear Polarization-Enhanced NMR Spectroscopy

Arthur César Pinon, David Lyndon Emsley, Aaron James Rossini, Jasmine Viger-Gravel

Here, we show how dynamic nuclear polarization (DNP) NMR spectroscopy experiments permit the atomic level structural characterization of loaded and empty lipid nanoparticles (LNPs). The LNPs used here were synthesized by the microfluidic mixing technique a ...

2018

Dark Energy Survey Year 1 Results: A Precise H-0 Estimate from DES Y1, BAO, and D/H Data

Juan Andrei Villarroel Fernandez, Eduardo Sanchez, Craig Matthew Smith, Aaron James Rossini, Augusto Martins Lima, Jonathan Andrew Blazek

We combine Dark Energy Survey Year 1 clustering and weak lensing data with baryon acoustic oscillations and Big Bang nucleosynthesis experiments to constrain the Hubble constant. Assuming a flat Lambda CDM model with minimal neutrino mass (Sigma m(v), = 0. ...

OXFORD UNIV PRESS2018

BDPA-Nitroxide Biradicals Tailored for Efficient Dynamic Nuclear Polarization Enhanced Solid-State NMR at Magnetic Fields up to 21.1 T

David Benjamin Roger Antoine Gajan, Dominik Józef Kubicki, Arthur César Pinon, David Lyndon Emsley, Aaron James Rossini, Georges Guévork Jean-Jacques Menzildjian, Moreno Lelli

Dynamic nuclear polarization (DNP) solid-state nuclear magnetic resonance (NMR) has developed into an invaluable tool for the investigation of a wide range of materials. However, the sensitivity gain achieved with many polarizing agents suffers from an unf ...

AMER CHEMICAL SOC2018

Transportable hyperpolarized metabolites

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

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

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

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

Dominik Józef Kubicki, David Lyndon Emsley, Aaron James Rossini

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

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

Dominik Józef Kubicki, David Lyndon Emsley, Aaron James Rossini

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

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

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