Publications de Jasmine Viger-Gravel

High Sensitivity Detection of a Solubility Limiting Surface Transformation of Drug Particles by DNP SENS

David Lyndon Emsley, Arthur César Pinon, Jasmine Viger-Gravel

We investigate the presence of a surface species for the active pharmaceutical ingredient (API) AZD9496 with dynamic nuclear polarization surface enhanced nuclear spectroscopy (DNP SENS). We show that using DNP we can elucidate the presence of an amorphous ...

2021

Two-step immobilization of metronidazole prodrug on TEMPO cellulose nanofibrils through thiol-yne click chemistry for in situ controlled release

David Lyndon Emsley, Jasmine Viger-Gravel, Michel Bardet, Julien Bras

Nowadays, drug encapsulation and drug release from cellulose nanofibrils systems are intense research topics, and commercial grades of cellulose nanomaterials are currently available. In this work we present an ester-containing prodrug of metronidazole tha ...

ELSEVIER SCI LTD2021

Atomic-Scale Description of Interfaces between Antigen and Aluminum-Based Adjuvants Used in Vaccines by Dynamic Nuclear Polarization (DNP) Enhanced NMR Spectroscopy

Jasmine Viger-Gravel, Federico Maria Paruzzo, David Benjamin Roger Antoine Gajan

The addition of aluminum-based adjuvants in vaccines enhances the immune response to antigens. The strength of antigen adsorption on adjuvant gels is known to modulate vaccine efficacy. However, a detailed understanding of the mechanisms of interaction bet ...

WILEY-V C H VERLAG GMBH2020

Chemical exchange at the ferroelectric phase transition of lead germanate revealed by solid state Pb-207 nuclear magnetic resonance

David Lyndon Emsley, Arnaud Magrez, Brennan James Walder, Jasmine Viger-Gravel, Claudia Esther Avalos

The nature of the dynamics and structural changes that take place at the ferroelectric phase transition in lead oxides is a rich field of study. Solid-state nuclear magnetic resonance (NMR) of Pb-207 is well suited to study the local structure and disorder ...

ROYAL SOC CHEMISTRY2019

Topology of Pretreated Wood Fibers Using Dynamic Nuclear Polarization

David Lyndon Emsley, Jeremy Luterbacher, Arthur César Pinon, Pierrick Berruyer, Jasmine Viger-Gravel, Wu Lan, Michel Bardet

In the continuously developing field of lignocellulosic biomass, high-yield lignin depolymerization processes are sought to optimize its productivity and profitability. Recently, formaldehyde stabilization during lignin extraction and biomass pretreatment ...

2019

F-19 Magic Angle Spinning Dynamic Nuclear Polarization Enhanced NMR Spectroscopy

David Lyndon Emsley, Dominik Józef Kubicki, Jasmine Viger-Gravel, Moreno Lelli, Claudia Esther Avalos, David Benjamin Roger Antoine Gajan

The introduction of high-frequency, high-power microwave sources, tailored biradicals, and low-temperature magic angle spinning (MAS) probes has led to a rapid development of hyperpolarization strategies for solids and frozen solutions, leading to large ga ...

Wiley-VCH Verlag GmbH2019

Core-Shell Structure of Organic Crystalline Nanoparticles Determined by Relayed Dynamic Nuclear Polarization NMR

David Lyndon Emsley, Arthur César Pinon, Jasmine Viger-Gravel

The structure of crystalline nanoparticles (CNPs) is determined using dynamic nuclear polarization (DNP) enhanced NMR spectroscopy experiments. The CNPs are composed of a crystalline core containing an active pharmaceutical ingredient (compound P), coated ...

AMER CHEMICAL SOC2018

Predicting the DNP-SENS efficiency in reactive heterogeneous catalysts from hydrophilicity

David Lyndon Emsley, Jasmine Viger-Gravel, David Benjamin Roger Antoine Gajan

2018

207Pb NMR of ferroelectric perovskite lead germanate at and below the paraelectric phase transition

David Lyndon Emsley, Brennan James Walder, Jasmine Viger-Gravel, Claudia Esther Avalos

AMER CHEMICAL SOC2018

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

David Lyndon Emsley, Aaron James Rossini, Arthur César Pinon, 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