Publications by Gabriele Stevanato

Observation of Transient Prenucleation Species of Calcium Carbonate by DNP-Enhanced NMR

David Lyndon Emsley, Gabriele Stevanato, Martins Balodis, Yu Rao, Mattia Negroni

Knowledge of the mechanism by which polymorphic inorganic species, such as carbonates, are formed is crucial to understand and guide the selective crystallization of end products. Recently it has been shown that a key step in the crystallization of calcium ...

2024

Dynamic Nuclear Polarization of Inorganic Halide Perovskites

Dominik Józef Kubicki, David Lyndon Emsley, Gabriele Stevanato, Aditya Mishra, Michael Allan Hope

NMR, EPR, XRD datasets and SEM image for the research article titled "Dynamic Nuclear Polarization of Inorganic Halide Perovskites". For further details see the readme.txt file. ...

Zenodo2023

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

Dynamic Nuclear Polarization of Inorganic Halide Perovskites

Dominik Józef Kubicki, David Lyndon Emsley, Gabriele Stevanato, Aditya Mishra, Michael Allan Hope

The intrinsic low sensitivity of nuclear magnetic resonance (NMR) experiments limits their utility for structure determination of materials. Dynamic nuclear polarization (DNP) under magic angle spinning (MAS) has shown tremendous potential to overcome this ...

2023

Design Principles for the Development of Gd(III) Polarizing Agents for Magic Angle Spinning Dynamic Nuclear Polarization

Anne-Sophie Chauvin, Marinella Mazzanti, David Lyndon Emsley, Gabriele Stevanato, Yu Rao, Amrit Venkatesh

Nuclear magnetic resonance suffers from an intrinsically low sensitivity, which can be overcome by dynamic nuclear polarization (DNP). Gd(III) complexes are attractive exogenous polarizing agents for magic angle spinning (MAS) DNP due to their high chemica ...

2022

Trehalose matrices for high temperature dynamic nuclear polarization enhanced solid state NMR

Gabriele Stevanato

Dynamic nuclear polarization (DNP) at cryogenic temperatures has proved to be a valuable technique to enhance the sensitivity of solid-state NMR spectroscopy. Over the years, sample formulations have been optimized for experiments at cryogenic temperatures ...

ROYAL SOC CHEMISTRY2022

Theory and simulations of homonuclear three-spin systems in rotating solids

David Lyndon Emsley, Gabriele Stevanato, Pinelopi Moutzouri, Bruno Simões de Almeida

The homonuclear dipolar coupling is the internal spin interaction that contributes the most to the line shapes in magic-angle-spinning (MAS) H-1 NMR spectra of solids, and linewidths typically extend over several hundred Hertz, limiting the H-1 resolution. ...

2021

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

Dynamic Nuclear Polarization Enhancement of 200 at 21.15 T Enabled by 65 kHz Magic Angle Spinning

David Lyndon Emsley, Gabriele Stevanato, Snaedis Björgvinsdóttir, Yu Rao, Pierrick Berruyer, Andrea Bertarello, Moreno Lelli

Solid-state nuclear magnetic resonance under magic angle spinning (MAS) enhanced with dynamic nuclear polarization (DNP) is a powerful approach to characterize many important classes of materials, allowing access to previously inaccessible structural and d ...

2020

TinyPols: a family of water-soluble binitroxides tailored for dynamic nuclear polarization enhanced NMR spectroscopy at 18.8 and 21.1 T

David Benjamin Roger Antoine Gajan, David Lyndon Emsley, Gabriele Stevanato, Georges Guévork Jean-Jacques Menzildjian, Moreno Lelli

Dynamic Nuclear Polarization (DNP) has recently emerged as a key method to increase the sensitivity of solid-state NMR spectroscopy under Magic Angle Spinning (MAS). While efficient binitroxide polarizing agents such as AMUPol have been developed for MAS D ...

2020

Open and Closed Radicals: Local Geometry around Unpaired Electrons Governs Magic-Angle Spinning Dynamic Nuclear Polarization Performance

Dominik Józef Kubicki, Manuel Cordova, David Lyndon Emsley, Gabriele Stevanato, Yu Rao, Georges Guévork Jean-Jacques Menzildjian, Moreno Lelli

The development of magic-angle spinning dynamic nuclear polarization (MAS DNP) has allowed atomic-level characterization of materials for which conventional solid-state NMR is impractical due to the lack of sensitivity. The rapid progress of MAS DNP has be ...

2020

Homonuclear Decoupling in H-1 NMR of Solids by Remote Correlation

David Lyndon Emsley, Federico Maria Paruzzo, Gabriele Stevanato, Pinelopi Moutzouri, Bruno Simões de Almeida

The typical linewidths of H-1 NMR spectra of powdered organic solids at 111 kHz magic-angle spinning (MAS) are of the order of a few hundred Hz. While this is remarkable in comparison to the tens of kHz observed in spectra of static samples, it is still th ...

Wiley-VCH Verlag GmbH2020

A Factor Two Improvement in High-Field Dynamic Nuclear Polarization from Gd(III) Complexes by Design

Anne-Sophie Chauvin, Marinella Mazzanti, Dominik Józef Kubicki, David Lyndon Emsley, Gabriele Stevanato, Georges Guévork Jean-Jacques Menzildjian

Gadolinium(III) complexes have recently been demonstrated to have potential as polarizing agents for high-field dynamic nuclear polarization (DNP) NMR spectroscopy. By tailoring the ligand design to reduce the zero-field splitting (ZFS), we demonstrate a q ...

2019

Doping and phase segregation in Mn2+- and Co2+-doped lead halide perovskites from Cs-133 and H-1 NMR relaxation enhancement

Michael Graetzel, Shaik Mohammed Zakeeruddin, Dominik Józef Kubicki, Arthur César Pinon, David Lyndon Emsley, Albert Hofstetter, Gabriele Stevanato, Daniel Prochowicz

Lead halide perovskites belong to a broad class of compounds with appealing optoelectronic and photovoltaic properties. Doping with transition metal ions such as Mn2+ and Co2+ has recently been reported to substantially enhance luminescence and stability o ...

Royal Society of Chemistry2019

Homonuclear ADAPT: A general preparation route to long-lived nuclear singlet order

Gabriele Stevanato

We introduce a simple strategy to access and readout nuclear singlet order based on the alternate repetition of hard pulses and delays. We demonstrate the general applicability of the method by accessing nuclear singlet order in spin systems characterized ...

Academic Press Inc - Elsevier Science2019

Hyperpolarized long-lived nuclear spin states in monodeuterated methyl groups

Sami Jannin, Basile Vuichoud, David Lyndon Emsley, Gabriele Stevanato

2018

Refocused linewidths less than 10 Hz in H-1 solid-state NMR

Judith Schlagnitweit, Daniele Mammoli, David Lyndon Emsley, Federico Maria Paruzzo, Gabriele Stevanato

Academic Press Inc - Elsevier Science2018

Direct enhancement of nitrogen-15 targets at high-field by fast ADAPT-SABRE

Gabriele Stevanato

Signal Amplification by Reversible Exchange (SABRE) is an attractive nuclear spin hyperpolarization technique capable of huge sensitivity enhancement in nuclear magnetic resonance (NMR) detection. The resonance condition of SABRE hyperpolarization depends ...

Academic Press Inc - Elsevier Science2017

Dynamic Nuclear Polarization of Long-Lived Nuclear Spin States in Methyl Groups

Geoffrey Bodenhausen, Sami Jannin, Aurélien Bornet, Basile Vuichoud, Daniele Mammoli, Arthur César Pinon, Gabriele Stevanato

We have induced hyperpolarized long-lived states in compounds containing C-13-bearing methyl groups by dynamic nuclear polarization (DNP) at cryogenic temperatures, followed by dissolution with a warm solvent. The hyper polarized methyl long-lived states g ...

Amer Chemical Soc2017

Alternating Delays Achieve Polarization Transfer (ADAPT) to heteronuclei in PHIP experiments

Gabriele Stevanato

A new methodology for producing hyperpolarized C-13 nuclei in small organic systems via parahydrogen induced polarization (PHIP) is proposed: ADAPT (Alternating Delays Achieve Polarization Transfer). The theoretical foundation of the process is investigate ...

Academic Press Inc - Elsevier Science2017