Publications by Anne-Sophie Chauvin

Peptide‐Carbazolyl Cyanobenzene Conjugates: Enabling Biomolecule Functionalization via Photoredox and Energy Transfer Catalysis

Anne-Sophie Chauvin, Jérôme Waser, Beat Fierz, Xingyu Liu, Wei Cai

Since their discovery in 2012, carbazolyl (iso)phthalonitrile derivatives (Cz(I)PN) have found significant applications as photocatalysts in organic chemistry. Herein, we introduce two efficient methods for incorporating carbazolyl cyanobenzenes into vario ...

Wiley2025

Accessing Carbon, Boron and Germanium Spiro Stereocentres in a Unified Catalytic Enantioselective Approach

Anne-Sophie Chauvin, Nicolai Cramer

Achieving substrate generality in asymmetric catalysis remains a long-standing goal, particularly for the selective construction of chiral heteroatoms. Compared with carbon, sulfur, phosphorus and silicon stereogenic centres, methods for the construction o ...

NATURE PORTFOLIO2025

Uranium(IV) and Thorium(IV) Coordination Polymers Based on Tritopic Carboxylic Acids

Rosario Scopelliti, Anne-Sophie Chauvin, Marinella Mazzanti, Farzaneh Fadaei Tirani, Aurélien René Willauer, Wendy Lee Queen, Till Marian Schertenleib

Rigidtritopic linkers of different sizes were used to buildporous U-(IV) and Th-(IV) 3D frameworks. The charge of the polymerscould be tuned by reaction conditions such as the temperature, pH,solvent, ligand, or metal precursor, yielding a series of neutra ...

AMER CHEMICAL SOC2023

Multielectron Redox Chemistry of Uranium by Accessing the plus II Oxidation State and Enabling Reduction to a U(I) Synthon

Rosario Scopelliti, Anne-Sophie Chauvin, Marinella Mazzanti, Ivica Zivkovic

Thesynthesis of molecular uranium complexes in oxidation stateslower than +3 remains a challenge despite the interest for their multielectrontransfer reactivity and electronic structures. Herein, we report theone- and two-electron reduction of a U(III) com ...

2023

Gd3+-Functionalized Lithium Niobate Nanoparticles for Dual Multiphoton and Magnetic Resonance Bioimaging

Sandrine Gerber, Anne-Sophie Chauvin, Luigi Bonacina, Marinella Mazzanti, Katarzyna Pierzchala, Raphaël Jovita De Matos, Dario Diviani, Jérémy Vuilleumier, Adrian Stefan Gheata, Ileana Ozana Jelescu, Laura Camille Louise Nicolle, Fiorella Lucarini

Harmonic nanoparticles (HNPs) have emerged as appealing exogenous probes for optical bioimaging due to their distinctive features such as long-term photostability and spectral flexibility, allowing multiphoton excitation in the classical (NIR-I) and extend ...

2022

Structure, reactivity and luminescence studies of triphenylsiloxide complexes of tetravalent lanthanides

Jean-Claude Bünzli, Anne-Sophie Chauvin, Marinella Mazzanti, Farzaneh Fadaei Tirani, Aurélien René Willauer

Among the 14 lanthanide elements (Ce-Lu), until recently, the tetravalent oxidation state was readily accessible in solution only for cerium while Pr(iv), Nd(iv), Dy(iv) and Tb(iv) had only been detected in the solid state. The triphenylsiloxide ligand rec ...

2022

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

Vascular-targeted micelles as a specific MRI contrast agent for molecular imaging of fibrin clots and cancer cells

Anne-Sophie Chauvin, Vassily Vorobiev, Aurélien Thomas

Molecular medical imaging is intended to increase the accuracy of diagnosis, particularly in cardiovascular and cancer-related diseases, where early detection could significantly increase the treatment success rate. In this study, we present mixed micelles ...

ELSEVIER2021

Synthesis and Characterization of Water Stable Uranyl(V) Complexes

Anne-Sophie Chauvin, Marinella Mazzanti, Farzaneh Fadaei Tirani, Radmila Faizova

The importance of uranyl(V) (UO2+) species associated with environmental and geologic applications is becoming increasingly evident, but the tendency of the uranyl(V) cation to disproportionate in water has prevented the isolation of stable complexes. Here ...

Wiley-VCH Verlag GmbH2021

Colorimetry of Luminescent Lanthanide Complexes

Anne-Sophie Chauvin, Julien Alexandre Andres

Europium, terbium, dysprosium, and samarium are the main trivalent lanthanide ions emitting in the visible spectrum. In this work, the potential of these ions for colorimetric applications and colour reproduction was studied. The conversion of spectral dat ...

2020

Highly‐Substituted 1,2,3‐Triazolines: a New Class of Solid State Emitters with Electrofluorochromic Behavior

Andrzej Sienkiewicz, Kay Severin, Rosario Scopelliti, Anne-Sophie Chauvin, Albert Ruggi, Alberto Fabrizio, Farzaneh Fadaei Tirani, Abdusalom Suleymanov, Ophélie Marie Planes

2019

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

Synthesis and Characterization of a Water Stable Uranyl(V) Complex

Rosario Scopelliti, Anne-Sophie Chauvin, Marinella Mazzanti, Radmila Faizova

We have identified a polydentate aminocarboxylate ligand that stabilizes uranyl(V) in water. The mononuclear [UO2(dpaea)]X, (dpaeaH2 = Bis(pyridyl-6-methyl-2-carboxylate)-ethylamine; X = CoCp2*+ or X = K(2.2.2.cryptand) complexes have been isolated from an ...

2018

Self-Assembled Nanomicelles as MRI Blood-Pool Contrast Agent

Lothar Helm, Anne-Sophie Chauvin, Vassily Vorobiev

Gadolinium‐loaded nanomicelles show promise as future magnetic resonance imaging (MRI) contrast agents (CAs). Their increased size and high gadolinium (Gd) loading gives them an edge in proton relaxivity over smaller molecular Gd‐complexes. Their size and ...

2017

Carbazole as Linker for Dinuclear Gadolinium-Based MRI Contrast Agents

Loïck Moriggi, Lothar Helm, Anne-Sophie Chauvin, Bibimaryam Mousavi

Ligands able to complex two gadolinium ions have been synthesized and characterized in view of the ability of the complexes to increase the spin relaxation of water protons. All ligands are based on the heptadentate diethylenetriaminetetraacetic acid (DTTA ...

Wiley-V C H Verlag Gmbh2017

A New Anti-Counterfeiting Feature Relying on Invisible Luminescent Full Color Images Printed with Lanthanide-Based Inks

Roger Hersch, Jacques-Edouard Moser, Anne-Sophie Chauvin, Julien Alexandre Andres

Europium and terbium trisdipicolinate complexes are inkjet printed onto paper with commercially available desktop inkjet printers. Together with a commercial blue luminescent ink, the red-emitting luminescent ink containing europium and the green-emitting ...

Wiley-Blackwell2014

New sensitizers for dye-sensitized solar cells featuring a carbon-bridged phenylenevinylene

Michael Graetzel, Anne-Sophie Chauvin, Aswani Yella

We demonstrate that a carbon-bridged phenylenevinylene (CPV)-linked dye serves as a novel and efficient sensitizer for dye-sensitized solar cells. The cells show IPCE values of greater than 90%, PCEs of up to 7.12%, and high open circuit voltages reaching ...

Royal Society of Chemistry2013

Synthesis and cell localization of self-assembled dinuclear lanthanide bioprobes

Jean-Claude Bünzli, Caroline Vandevyver, Anne-Sophie Chauvin, Bo Song

Lanthanide bioprobes and bioconjugates are ideal luminescent stains in view of their low propensity to photobleaching, sharp emission lines and long excited state lifetimes permitting time-resolved detection for enhanced sensitivity. In this paper, we expa ...

Royal Society, The2013

Editorial - Solar Energy Harvesting

Michael Graetzel, Anne-Sophie Chauvin

Schweizerische Chemische Gesellschaft2013

Energy transfer in coumarin-sensitised lanthanide luminescence: investigation of the nature of the sensitiser and its distance to the lanthanide ion

Anne-Sophie Chauvin, Julien Alexandre Andres

A series of lanthanide complexes Ln(dpxCy)(3) have been synthesised. The ligands are composed of a coordinating dipicolinic acid backbone decorated with a polyoxyethylene arm fitted with a coumarin moiety at its extremity. The nature of the coumarin ...

Royal Society of Chemistry2013